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HADOOP-17424. Replace HTrace with No-Op tracer (#2645)

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This commit is contained in:
Siyao Meng 2021-01-31 20:42:44 -08:00 committed by GitHub
parent 6fafdd7682
commit 1a205cc3ad
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GPG Key ID: 4AEE18F83AFDEB23
69 changed files with 432 additions and 1778 deletions
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4
hadoop-client-modules/hadoop-client-api/pom.xml
View File

@ -126,9 +126,7 @@
<excludes>
<exclude>org/apache/hadoop/*</exclude>
<exclude>org/apache/hadoop/**/*</exclude>
<!-- Our non-shaded htrace and logging libraries -->
<exclude>org/apache/htrace/*</exclude>
<exclude>org/apache/htrace/**/*</exclude>
<!-- Our non-shaded logging libraries -->
<exclude>org/slf4j/*</exclude>
<exclude>org/slf4j/**/*</exclude>
<exclude>org/apache/commons/logging/*</exclude>

2
hadoop-client-modules/hadoop-client-check-invariants/pom.xml
View File

@ -80,8 +80,6 @@
but enforcer still sees it.
-->
<exclude>org.apache.hadoop:hadoop-annotations</exclude>
<!-- We leave HTrace as an unshaded dependnecy on purpose so that tracing within a JVM will work -->
<exclude>org.apache.htrace:htrace-core4</exclude>
<!-- Leave slf4j unshaded so downstream users can configure logging. -->
<exclude>org.slf4j:slf4j-api</exclude>
<!-- Leave commons-logging unshaded so downstream users can configure logging. -->

2
hadoop-client-modules/hadoop-client-check-test-invariants/pom.xml
View File

@ -84,8 +84,6 @@
but enforcer still sees it.
-->
<exclude>org.apache.hadoop:hadoop-annotations</exclude>
<!-- We leave HTrace as an unshaded dependnecy on purpose so that tracing within a JVM will work -->
<exclude>org.apache.htrace:htrace-core4</exclude>
<!-- Leave slf4j unshaded so downstream users can configure logging. -->
<exclude>org.slf4j:slf4j-api</exclude>
<!-- Leave commons-logging unshaded so downstream users can configure logging. -->

5
hadoop-client-modules/hadoop-client-minicluster/pom.xml
View File

@ -672,7 +672,6 @@
<exclude>org.apache.hadoop:hadoop-client-api</exclude>
<exclude>org.apache.hadoop:hadoop-client-runtime</exclude>
<!-- Fine to expose our purposefully not-shaded deps as dependencies -->
<exclude>org.apache.htrace:htrace-core4</exclude>
<exclude>org.slf4j:slf4j-api</exclude>
<exclude>commons-logging:commons-logging</exclude>
<exclude>junit:junit</exclude>
@ -870,9 +869,7 @@
<excludes>
<exclude>org/apache/hadoop/*</exclude>
<exclude>org/apache/hadoop/**/*</exclude>
<!-- Our non-shaded htrace and logging libraries -->
<exclude>org/apache/htrace/*</exclude>
<exclude>org/apache/htrace/**/*</exclude>
<!-- Our non-shaded logging libraries -->
<exclude>org/slf4j/*</exclude>
<exclude>org/slf4j/**/*</exclude>
<exclude>org/apache/commons/logging/*</exclude>

12
hadoop-client-modules/hadoop-client-runtime/pom.xml
View File

@ -75,15 +75,9 @@
</dependency>
<!-- Since hadoop-client is listed as optional, we have to list transitive
dependencies that we still want to show up.
* HTrace
* Slf4j API
* commons-logging
-->
<dependency>
<groupId>org.apache.htrace</groupId>
<artifactId>htrace-core4</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
@ -146,8 +140,6 @@
<excludes>
<!-- We need a filter that matches just those things that aer included in the api jar -->
<exclude>org.apache.hadoop:hadoop-client-api</exclude>
<!-- Leave HTrace as an unshaded dependency on purpose, since a static class member is used to trace within a given JVM instance -->
<exclude>org.apache.htrace:htrace-core4</exclude>
<!-- Leave slf4j unshaded so downstream users can configure logging. -->
<exclude>org.slf4j:slf4j-api</exclude>
<!-- Leave commons-logging unshaded so downstream users can configure logging. -->
@ -250,9 +242,7 @@
<excludes>
<exclude>org/apache/hadoop/*</exclude>
<exclude>org/apache/hadoop/**/*</exclude>
<!-- Our non-shaded htrace and logging libraries -->
<exclude>org/apache/htrace/*</exclude>
<exclude>org/apache/htrace/**/*</exclude>
<!-- Our non-shaded logging libraries -->
<exclude>org/slf4j/*</exclude>
<exclude>org/slf4j/**/*</exclude>
<exclude>org/apache/commons/logging/*</exclude>

4
hadoop-common-project/hadoop-common/pom.xml
View File

@ -286,10 +286,6 @@
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.htrace</groupId>
<artifactId>htrace-core4</artifactId>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>

2
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FSOutputSummer.java
View File

@ -21,7 +21,7 @@
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.util.DataChecksum;
import org.apache.htrace.core.TraceScope;
import org.apache.hadoop.tracing.TraceScope;
import java.io.IOException;
import java.io.OutputStream;

2
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileContext.java
View File

@ -67,7 +67,7 @@
import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
import org.apache.hadoop.thirdparty.com.google.common.annotations.VisibleForTesting;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Tracer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

4
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java
View File

@ -83,8 +83,8 @@
import org.apache.hadoop.util.ReflectionUtils;
import org.apache.hadoop.util.ShutdownHookManager;
import org.apache.hadoop.util.StringUtils;
import org.apache.htrace.core.Tracer;
import org.apache.htrace.core.TraceScope;
import org.apache.hadoop.tracing.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
import org.apache.hadoop.thirdparty.com.google.common.annotations.VisibleForTesting;

4
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FsShell.java
View File

@ -35,8 +35,8 @@
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

14
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FsTracer.java
View File

@ -22,7 +22,7 @@
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.tracing.TraceUtils;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Tracer;
/**
* Holds the HTrace Tracer used for FileSystem operations.
@ -47,18 +47,6 @@ public static synchronized Tracer get(Configuration conf) {
return instance;
}
@VisibleForTesting
public static synchronized void clear() {
if (instance == null) {
return;
}
try {
instance.close();
} finally {
instance = null;
}
}
private FsTracer() {
}
}

4
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/Globber.java
View File

@ -27,8 +27,8 @@
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.util.DurationInfo;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

4
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Client.java
View File

@ -54,8 +54,8 @@
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.Time;
import org.apache.hadoop.util.concurrent.AsyncGet;
import org.apache.htrace.core.Span;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Span;
import org.apache.hadoop.tracing.Tracer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

4
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/ProtobufRpcEngine.java
View File

@ -39,8 +39,8 @@
import org.apache.hadoop.security.token.TokenIdentifier;
import org.apache.hadoop.util.Time;
import org.apache.hadoop.util.concurrent.AsyncGet;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

4
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/ProtobufRpcEngine2.java
View File

@ -35,8 +35,8 @@
import org.apache.hadoop.security.token.TokenIdentifier;
import org.apache.hadoop.util.Time;
import org.apache.hadoop.util.concurrent.AsyncGet;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

64
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java
View File

@ -99,6 +99,7 @@
import org.apache.hadoop.ipc.protobuf.RpcHeaderProtos.RpcSaslProto;
import org.apache.hadoop.ipc.protobuf.RpcHeaderProtos.RpcSaslProto.SaslAuth;
import org.apache.hadoop.ipc.protobuf.RpcHeaderProtos.RpcSaslProto.SaslState;
import org.apache.hadoop.ipc.protobuf.RpcHeaderProtos.RPCTraceInfoProto;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.SaslPropertiesResolver;
@ -118,10 +119,11 @@
import org.apache.hadoop.util.ProtoUtil;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.Time;
import org.apache.htrace.core.SpanId;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Span;
import org.apache.hadoop.tracing.SpanContext;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
import org.apache.hadoop.tracing.TraceUtils;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.hadoop.thirdparty.com.google.common.annotations.VisibleForTesting;
import org.apache.hadoop.thirdparty.protobuf.ByteString;
@ -783,7 +785,7 @@ public static class Call implements Schedulable,
private AtomicInteger responseWaitCount = new AtomicInteger(1);
final RPC.RpcKind rpcKind;
final byte[] clientId;
private final TraceScope traceScope; // the HTrace scope on the server side
private final Span span; // the trace span on the server side
private final CallerContext callerContext; // the call context
private boolean deferredResponse = false;
private int priorityLevel;
@ -798,7 +800,7 @@ public static class Call implements Schedulable,
Call(Call call) {
this(call.callId, call.retryCount, call.rpcKind, call.clientId,
call.traceScope, call.callerContext);
call.span, call.callerContext);
}
Call(int id, int retryCount, RPC.RpcKind kind, byte[] clientId) {
@ -812,14 +814,14 @@ public Call(int id, int retryCount, Void ignore1, Void ignore2,
}
Call(int id, int retryCount, RPC.RpcKind kind, byte[] clientId,
TraceScope traceScope, CallerContext callerContext) {
Span span, CallerContext callerContext) {
this.callId = id;
this.retryCount = retryCount;
this.timestampNanos = Time.monotonicNowNanos();
this.responseTimestampNanos = timestampNanos;
this.rpcKind = kind;
this.clientId = clientId;
this.traceScope = traceScope;
this.span = span;
this.callerContext = callerContext;
this.clientStateId = Long.MIN_VALUE;
this.isCallCoordinated = false;
@ -988,8 +990,8 @@ private class RpcCall extends Call {
RpcCall(Connection connection, int id, int retryCount,
Writable param, RPC.RpcKind kind, byte[] clientId,
TraceScope traceScope, CallerContext context) {
super(id, retryCount, kind, clientId, traceScope, context);
Span span, CallerContext context) {
super(id, retryCount, kind, clientId, span, context);
this.connection = connection;
this.rpcRequest = param;
}
@ -2672,19 +2674,24 @@ private void processRpcRequest(RpcRequestHeaderProto header,
throw new FatalRpcServerException(
RpcErrorCodeProto.FATAL_DESERIALIZING_REQUEST, err);
}
TraceScope traceScope = null;
Span span = null;
if (header.hasTraceInfo()) {
if (tracer != null) {
// If the incoming RPC included tracing info, always continue the
// trace
SpanId parentSpanId = new SpanId(
header.getTraceInfo().getTraceId(),
header.getTraceInfo().getParentId());
traceScope = tracer.newScope(
RpcClientUtil.toTraceName(rpcRequest.toString()),
parentSpanId);
traceScope.detach();
RPCTraceInfoProto traceInfoProto = header.getTraceInfo();
if (traceInfoProto.hasSpanContext()) {
if (tracer == null) {
setTracer(Tracer.curThreadTracer());
}
if (tracer != null) {
// If the incoming RPC included tracing info, always continue the
// trace
SpanContext spanCtx = TraceUtils.byteStringToSpanContext(
traceInfoProto.getSpanContext());
if (spanCtx != null) {
span = tracer.newSpan(
RpcClientUtil.toTraceName(rpcRequest.toString()), spanCtx);
}
}
}
}
@ -2700,7 +2707,7 @@ private void processRpcRequest(RpcRequestHeaderProto header,
RpcCall call = new RpcCall(this, header.getCallId(),
header.getRetryCount(), rpcRequest,
ProtoUtil.convert(header.getRpcKind()),
header.getClientId().toByteArray(), traceScope, callerContext);
header.getClientId().toByteArray(), span, callerContext);
// Save the priority level assignment by the scheduler
call.setPriorityLevel(callQueue.getPriorityLevel(call));
@ -2953,10 +2960,9 @@ public void run() {
LOG.debug(Thread.currentThread().getName() + ": " + call + " for RpcKind " + call.rpcKind);
}
CurCall.set(call);
if (call.traceScope != null) {
call.traceScope.reattach();
traceScope = call.traceScope;
traceScope.getSpan().addTimelineAnnotation("called");
if (call.span != null) {
traceScope = tracer.activateSpan(call.span);
call.span.addTimelineAnnotation("called");
}
// always update the current call context
CallerContext.setCurrent(call.callerContext);
@ -2971,14 +2977,14 @@ public void run() {
if (running) { // unexpected -- log it
LOG.info(Thread.currentThread().getName() + " unexpectedly interrupted", e);
if (traceScope != null) {
traceScope.getSpan().addTimelineAnnotation("unexpectedly interrupted: " +
traceScope.addTimelineAnnotation("unexpectedly interrupted: " +
StringUtils.stringifyException(e));
}
}
} catch (Exception e) {
LOG.info(Thread.currentThread().getName() + " caught an exception", e);
if (traceScope != null) {
traceScope.getSpan().addTimelineAnnotation("Exception: " +
traceScope.addTimelineAnnotation("Exception: " +
StringUtils.stringifyException(e));
}
} finally {

4
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/WritableRpcEngine.java
View File

@ -39,8 +39,8 @@
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.*;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

4
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/Groups.java
View File

@ -34,8 +34,8 @@
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.atomic.AtomicReference;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
import org.apache.hadoop.thirdparty.com.google.common.annotations.VisibleForTesting;
import org.apache.hadoop.thirdparty.com.google.common.base.Ticker;
import org.apache.hadoop.thirdparty.com.google.common.cache.CacheBuilder;

26
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/NullTraceScope.java Normal file
View File

@ -0,0 +1,26 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
public class NullTraceScope extends TraceScope {
public static final NullTraceScope INSTANCE = new NullTraceScope();
public NullTraceScope() {
super(null);
}
}

32
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/SpanReceiverInfoBuilder.java → hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/Span.java
View File

@ -17,26 +17,28 @@
*/
package org.apache.hadoop.tracing;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.tracing.SpanReceiverInfo.ConfigurationPair;
import java.io.Closeable;
@InterfaceAudience.Public
@InterfaceStability.Stable
public class SpanReceiverInfoBuilder {
private SpanReceiverInfo info;
public class Span implements Closeable {
public SpanReceiverInfoBuilder(String className) {
info = new SpanReceiverInfo(0, className);
public Span() {
}
public void addConfigurationPair(String key, String value) {
info.configPairs.add(new ConfigurationPair(key, value));
public Span addKVAnnotation(String key, String value) {
return this;
}
public SpanReceiverInfo build() {
SpanReceiverInfo ret = info;
info = null;
return ret;
public Span addTimelineAnnotation(String msg) {
return this;
}
public SpanContext getContext() {
return null;
}
public void finish() {
}
public void close() {
}
}

32
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/SpanContext.java Normal file
View File

@ -0,0 +1,32 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
import java.io.Closeable;
/**
* Wrapper class for SpanContext to avoid using OpenTracing/OpenTelemetry
* SpanContext class directly for better separation.
*/
public class SpanContext implements Closeable {
public SpanContext() {
}
public void close() {
}
}

64
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/SpanReceiverInfo.java
View File

@ -1,64 +0,0 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
@InterfaceAudience.Public
@InterfaceStability.Stable
public class SpanReceiverInfo {
private final long id;
private final String className;
final List<ConfigurationPair> configPairs =
new ArrayList<ConfigurationPair>();
static class ConfigurationPair {
private final String key;
private final String value;
ConfigurationPair(String key, String value) {
this.key = key;
this.value = value;
}
public String getKey() {
return key;
}
public String getValue() {
return value;
}
}
SpanReceiverInfo(long id, String className) {
this.id = id;
this.className = className;
}
public long getId() {
return id;
}
public String getClassName() {
return className;
}
}

212
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/TraceAdmin.java
View File

@ -1,212 +0,0 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.net.InetSocketAddress;
import java.util.LinkedList;
import java.util.List;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.CommonConfigurationKeys;
import org.apache.hadoop.ipc.ProtobufRpcEngine2;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.tools.TableListing;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.Tool;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A command-line tool for viewing and modifying tracing settings.
*/
@InterfaceAudience.Private
public class TraceAdmin extends Configured implements Tool {
private TraceAdminProtocolPB proxy;
private TraceAdminProtocolTranslatorPB remote;
private static final Logger LOG = LoggerFactory.getLogger(TraceAdmin.class);
private void usage() {
PrintStream err = System.err;
err.print(
"Hadoop tracing configuration commands:\n" +
" -add [-class classname] [-Ckey=value] [-Ckey2=value2] ...\n" +
" Add a span receiver with the provided class name. Configuration\n" +
" keys for the span receiver can be specified with the -C options.\n" +
" The span receiver will also inherit whatever configuration keys\n" +
" exist in the daemon's configuration.\n" +
" -help: Print this help message.\n" +
" -host [hostname:port]\n" +
" Specify the hostname and port of the daemon to examine.\n" +
" Required for all commands.\n" +
" -list: List the current span receivers.\n" +
" -remove [id]\n" +
" Remove the span receiver with the specified id. Use -list to\n" +
" find the id of each receiver.\n" +
" -principal: If the daemon is Kerberized, specify the service\n" +
" principal name."
);
}
private int listSpanReceivers(List<String> args) throws IOException {
SpanReceiverInfo infos[] = remote.listSpanReceivers();
if (infos.length == 0) {
System.out.println("[no span receivers found]");
return 0;
}
TableListing listing = new TableListing.Builder().
addField("ID").
addField("CLASS").
showHeaders().
build();
for (SpanReceiverInfo info : infos) {
listing.addRow("" + info.getId(), info.getClassName());
}
System.out.println(listing.toString());
return 0;
}
private final static String CONFIG_PREFIX = "-C";
private int addSpanReceiver(List<String> args) throws IOException {
String className = StringUtils.popOptionWithArgument("-class", args);
if (className == null) {
System.err.println("You must specify the classname with -class.");
return 1;
}
ByteArrayOutputStream configStream = new ByteArrayOutputStream();
PrintStream configsOut = new PrintStream(configStream, false, "UTF-8");
SpanReceiverInfoBuilder factory = new SpanReceiverInfoBuilder(className);
String prefix = "";
for (int i = 0; i < args.size(); ++i) {
String str = args.get(i);
if (!str.startsWith(CONFIG_PREFIX)) {
System.err.println("Can't understand argument: " + str);
return 1;
}
str = str.substring(CONFIG_PREFIX.length());
int equalsIndex = str.indexOf("=");
if (equalsIndex < 0) {
System.err.println("Can't parse configuration argument " + str);
System.err.println("Arguments must be in the form key=value");
return 1;
}
String key = str.substring(0, equalsIndex);
String value = str.substring(equalsIndex + 1);
factory.addConfigurationPair(key, value);
configsOut.print(prefix + key + " = " + value);
prefix = ", ";
}
String configStreamStr = configStream.toString("UTF-8");
try {
long id = remote.addSpanReceiver(factory.build());
System.out.println("Added trace span receiver " + id +
" with configuration " + configStreamStr);
} catch (IOException e) {
System.out.println("addSpanReceiver error with configuration " +
configStreamStr);
throw e;
}
return 0;
}
private int removeSpanReceiver(List<String> args) throws IOException {
String indexStr = StringUtils.popFirstNonOption(args);
long id = -1;
try {
id = Long.parseLong(indexStr);
} catch (NumberFormatException e) {
System.err.println("Failed to parse ID string " +
indexStr + ": " + e.getMessage());
return 1;
}
remote.removeSpanReceiver(id);
System.err.println("Removed trace span receiver " + id);
return 0;
}
@Override
public int run(String argv[]) throws Exception {
LinkedList<String> args = new LinkedList<String>();
for (String arg : argv) {
args.add(arg);
}
if (StringUtils.popOption("-h", args) ||
StringUtils.popOption("-help", args)) {
usage();
return 0;
} else if (args.size() == 0) {
usage();
return 0;
}
String hostPort = StringUtils.popOptionWithArgument("-host", args);
if (hostPort == null) {
System.err.println("You must specify a host with -host.");
return 1;
}
if (args.isEmpty()) {
System.err.println("You must specify an operation.");
return 1;
}
String servicePrincipal = StringUtils.popOptionWithArgument("-principal",
args);
if (servicePrincipal != null) {
LOG.debug("Set service principal: {}", servicePrincipal);
getConf().set(
CommonConfigurationKeys.HADOOP_SECURITY_SERVICE_USER_NAME_KEY,
servicePrincipal);
}
RPC.setProtocolEngine(getConf(), TraceAdminProtocolPB.class,
ProtobufRpcEngine2.class);
InetSocketAddress address = NetUtils.createSocketAddr(hostPort);
UserGroupInformation ugi = UserGroupInformation.getCurrentUser();
Class<?> xface = TraceAdminProtocolPB.class;
proxy = (TraceAdminProtocolPB)RPC.getProxy(xface,
RPC.getProtocolVersion(xface), address,
ugi, getConf(), NetUtils.getDefaultSocketFactory(getConf()), 0);
remote = new TraceAdminProtocolTranslatorPB(proxy);
try {
if (args.get(0).equals("-list")) {
return listSpanReceivers(args.subList(1, args.size()));
} else if (args.get(0).equals("-add")) {
return addSpanReceiver(args.subList(1, args.size()));
} else if (args.get(0).equals("-remove")) {
return removeSpanReceiver(args.subList(1, args.size()));
} else {
System.err.println("Unrecognized tracing command: " + args.get(0));
System.err.println("Use -help for help.");
return 1;
}
} finally {
remote.close();
}
}
public static void main(String[] argv) throws Exception {
TraceAdmin admin = new TraceAdmin();
admin.setConf(new Configuration());
System.exit(admin.run(argv));
}
}

69
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/TraceAdminProtocol.java
View File

@ -1,69 +0,0 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
import java.io.IOException;
import java.util.LinkedList;
import java.util.List;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.CommonConfigurationKeys;
import org.apache.hadoop.io.retry.AtMostOnce;
import org.apache.hadoop.io.retry.Idempotent;
import org.apache.hadoop.ipc.ProtocolInfo;
import org.apache.hadoop.security.KerberosInfo;
/**
* Protocol interface that provides tracing.
*/
@KerberosInfo(
serverPrincipal=CommonConfigurationKeys.HADOOP_SECURITY_SERVICE_USER_NAME_KEY)
@InterfaceAudience.Public
@InterfaceStability.Evolving
public interface TraceAdminProtocol {
public static final long versionID = 1L;
/**
* List the currently active trace span receivers.
*
* @throws IOException On error.
*/
@Idempotent
public SpanReceiverInfo[] listSpanReceivers() throws IOException;
/**
* Add a new trace span receiver.
*
* @param desc The span receiver description.
* @return The ID of the new trace span receiver.
*
* @throws IOException On error.
*/
@AtMostOnce
public long addSpanReceiver(SpanReceiverInfo desc) throws IOException;
/**
* Remove a trace span receiver.
*
* @param spanReceiverId The id of the span receiver to remove.
* @throws IOException On error.
*/
@AtMostOnce
public void removeSpanReceiver(long spanReceiverId) throws IOException;
}

118
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/TraceAdminProtocolServerSideTranslatorPB.java
View File

@ -1,118 +0,0 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
import java.io.Closeable;
import java.io.IOException;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.io.retry.AtMostOnce;
import org.apache.hadoop.ipc.ProtobufHelper;
import org.apache.hadoop.ipc.ProtocolSignature;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.tracing.TraceAdminPB.AddSpanReceiverRequestProto;
import org.apache.hadoop.tracing.TraceAdminPB.AddSpanReceiverResponseProto;
import org.apache.hadoop.tracing.TraceAdminPB.ListSpanReceiversRequestProto;
import org.apache.hadoop.tracing.TraceAdminPB.ListSpanReceiversResponseProto;
import org.apache.hadoop.tracing.TraceAdminPB.ConfigPair;
import org.apache.hadoop.tracing.TraceAdminPB.RemoveSpanReceiverRequestProto;
import org.apache.hadoop.tracing.TraceAdminPB.RemoveSpanReceiverResponseProto;
import org.apache.hadoop.thirdparty.protobuf.RpcController;
import org.apache.hadoop.thirdparty.protobuf.ServiceException;
@InterfaceAudience.Private
public class TraceAdminProtocolServerSideTranslatorPB
implements TraceAdminProtocolPB, Closeable {
private final TraceAdminProtocol server;
public TraceAdminProtocolServerSideTranslatorPB(TraceAdminProtocol server) {
this.server = server;
}
@Override
public void close() throws IOException {
RPC.stopProxy(server);
}
@Override
public ListSpanReceiversResponseProto listSpanReceivers(
RpcController controller, ListSpanReceiversRequestProto req)
throws ServiceException {
try {
SpanReceiverInfo[] descs = server.listSpanReceivers();
ListSpanReceiversResponseProto.Builder bld =
ListSpanReceiversResponseProto.newBuilder();
for (int i = 0; i < descs.length; ++i) {
bld.addDescriptions(TraceAdminPB.SpanReceiverListInfo.newBuilder().
setId(descs[i].getId()).
setClassName(descs[i].getClassName()).build());
}
return bld.build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public AddSpanReceiverResponseProto addSpanReceiver(
RpcController controller, AddSpanReceiverRequestProto req)
throws ServiceException {
try {
SpanReceiverInfoBuilder factory =
new SpanReceiverInfoBuilder(req.getClassName());
for (ConfigPair config : req.getConfigList()) {
factory.addConfigurationPair(config.getKey(), config.getValue());
}
long id = server.addSpanReceiver(factory.build());
return AddSpanReceiverResponseProto.newBuilder().setId(id).build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public RemoveSpanReceiverResponseProto removeSpanReceiver(
RpcController controller, RemoveSpanReceiverRequestProto req)
throws ServiceException {
try {
server.removeSpanReceiver(req.getId());
return RemoveSpanReceiverResponseProto.getDefaultInstance();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public long getProtocolVersion(String protocol, long clientVersion)
throws IOException {
return TraceAdminProtocol.versionID;
}
@Override
public ProtocolSignature getProtocolSignature(String protocol,
long clientVersion, int clientMethodsHash) throws IOException {
if (!protocol.equals(RPC.getProtocolName(TraceAdminProtocolPB.class))) {
throw new IOException("Serverside implements " +
RPC.getProtocolName(TraceAdminProtocolPB.class) +
". The following requested protocol is unknown: " + protocol);
}
return ProtocolSignature.getProtocolSignature(clientMethodsHash,
RPC.getProtocolVersion(TraceAdminProtocolPB.class),
TraceAdminProtocolPB.class);
}
}

105
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/TraceAdminProtocolTranslatorPB.java
View File

@ -1,105 +0,0 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
import java.io.Closeable;
import java.io.IOException;
import java.util.ArrayList;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.ipc.ProtobufHelper;
import org.apache.hadoop.ipc.ProtocolTranslator;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.tracing.TraceAdminPB.AddSpanReceiverRequestProto;
import org.apache.hadoop.tracing.TraceAdminPB.AddSpanReceiverResponseProto;
import org.apache.hadoop.tracing.TraceAdminPB.ListSpanReceiversRequestProto;
import org.apache.hadoop.tracing.TraceAdminPB.ListSpanReceiversResponseProto;
import org.apache.hadoop.tracing.TraceAdminPB.ConfigPair;
import org.apache.hadoop.tracing.TraceAdminPB.RemoveSpanReceiverRequestProto;
import org.apache.hadoop.tracing.TraceAdminPB.SpanReceiverListInfo;
import org.apache.hadoop.tracing.SpanReceiverInfo.ConfigurationPair;
import org.apache.hadoop.thirdparty.protobuf.ServiceException;
@InterfaceAudience.Private
public class TraceAdminProtocolTranslatorPB implements
TraceAdminProtocol, ProtocolTranslator, Closeable {
private final TraceAdminProtocolPB rpcProxy;
public TraceAdminProtocolTranslatorPB(TraceAdminProtocolPB rpcProxy) {
this.rpcProxy = rpcProxy;
}
@Override
public void close() throws IOException {
RPC.stopProxy(rpcProxy);
}
@Override
public SpanReceiverInfo[] listSpanReceivers() throws IOException {
ArrayList<SpanReceiverInfo> infos = new ArrayList<SpanReceiverInfo>(1);
try {
ListSpanReceiversRequestProto req =
ListSpanReceiversRequestProto.newBuilder().build();
ListSpanReceiversResponseProto resp =
rpcProxy.listSpanReceivers(null, req);
for (SpanReceiverListInfo info : resp.getDescriptionsList()) {
infos.add(new SpanReceiverInfo(info.getId(), info.getClassName()));
}
} catch (ServiceException e) {
throw ProtobufHelper.getRemoteException(e);
}
return infos.toArray(new SpanReceiverInfo[infos.size()]);
}
@Override
public long addSpanReceiver(SpanReceiverInfo info) throws IOException {
try {
AddSpanReceiverRequestProto.Builder bld =
AddSpanReceiverRequestProto.newBuilder();
bld.setClassName(info.getClassName());
for (ConfigurationPair configPair : info.configPairs) {
ConfigPair tuple = ConfigPair.newBuilder().
setKey(configPair.getKey()).
setValue(configPair.getValue()).build();
bld.addConfig(tuple);
}
AddSpanReceiverResponseProto resp =
rpcProxy.addSpanReceiver(null, bld.build());
return resp.getId();
} catch (ServiceException e) {
throw ProtobufHelper.getRemoteException(e);
}
}
@Override
public void removeSpanReceiver(long spanReceiverId) throws IOException {
try {
RemoveSpanReceiverRequestProto req =
RemoveSpanReceiverRequestProto.newBuilder()
.setId(spanReceiverId).build();
rpcProxy.removeSpanReceiver(null, req);
} catch (ServiceException e) {
throw ProtobufHelper.getRemoteException(e);
}
}
@Override
public Object getUnderlyingProxyObject() {
return rpcProxy;
}
}

23
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/TraceConfiguration.java Normal file
View File

@ -0,0 +1,23 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
public class TraceConfiguration {
public TraceConfiguration() {
}
}

54
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/TraceAdminProtocolPB.java → hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/TraceScope.java
View File

@ -15,24 +15,44 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
import org.apache.hadoop.ipc.VersionedProtocol;
import org.apache.hadoop.tracing.TraceAdminPB.TraceAdminService;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.CommonConfigurationKeys;
import org.apache.hadoop.ipc.ProtocolInfo;
import org.apache.hadoop.security.KerberosInfo;
import java.io.Closeable;
@KerberosInfo(
serverPrincipal=CommonConfigurationKeys.HADOOP_SECURITY_SERVICE_USER_NAME_KEY)
@ProtocolInfo(
protocolName = "org.apache.hadoop.tracing.TraceAdminPB.TraceAdminService",
protocolVersion = 1)
@InterfaceAudience.Public
@InterfaceStability.Evolving
public interface TraceAdminProtocolPB extends
TraceAdminService.BlockingInterface, VersionedProtocol {
public class TraceScope implements Closeable {
Span span;
public TraceScope(Span span) {
this.span = span;
}
// Add tag to the span
public void addKVAnnotation(String key, String value) {
}
public void addKVAnnotation(String key, Number value) {
}
public void addTimelineAnnotation(String msg) {
}
public Span span() {
return span;
}
public Span getSpan() {
return span;
}
public void reattach() {
}
public void detach() {
}
public void close() {
if (span != null) {
span.close();
}
}
}

52
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/TraceUtils.java
View File

@ -17,59 +17,31 @@
*/
package org.apache.hadoop.tracing;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.tracing.SpanReceiverInfo.ConfigurationPair;
import org.apache.htrace.core.HTraceConfiguration;
import org.apache.hadoop.thirdparty.protobuf.ByteString;
/**
* This class provides utility functions for tracing.
*/
@InterfaceAudience.Private
public class TraceUtils {
private static List<ConfigurationPair> EMPTY = Collections.emptyList();
static final String DEFAULT_HADOOP_TRACE_PREFIX = "hadoop.htrace.";
public static HTraceConfiguration wrapHadoopConf(final String prefix,
final Configuration conf) {
return wrapHadoopConf(prefix, conf, EMPTY);
public static TraceConfiguration wrapHadoopConf(final String prefix,
final Configuration conf) {
return null;
}
public static HTraceConfiguration wrapHadoopConf(final String prefix,
final Configuration conf, List<ConfigurationPair> extraConfig) {
final HashMap<String, String> extraMap = new HashMap<String, String>();
for (ConfigurationPair pair : extraConfig) {
extraMap.put(pair.getKey(), pair.getValue());
}
return new HTraceConfiguration() {
@Override
public String get(String key) {
String ret = getInternal(prefix + key);
if (ret != null) {
return ret;
}
return getInternal(DEFAULT_HADOOP_TRACE_PREFIX + key);
}
public static Tracer createAndRegisterTracer(String name) {
return null;
}
@Override
public String get(String key, String defaultValue) {
String ret = get(key);
if (ret != null) {
return ret;
}
return defaultValue;
}
public static SpanContext byteStringToSpanContext(ByteString byteString) {
return null;
}
private String getInternal(String key) {
if (extraMap.containsKey(key)) {
return extraMap.get(key);
}
return conf.get(key);
}
};
public static ByteString spanContextToByteString(SpanContext context) {
return null;
}
}

98
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/Tracer.java Normal file
View File

@ -0,0 +1,98 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
/**
* No-Op Tracer (for now) to remove HTrace without changing too many files.
*/
public class Tracer {
// Singleton
private static final Tracer globalTracer = null;
private final NullTraceScope nullTraceScope;
private final String name;
public final static String SPAN_RECEIVER_CLASSES_KEY =
"span.receiver.classes";
public Tracer(String name) {
this.name = name;
nullTraceScope = NullTraceScope.INSTANCE;
}
// Keeping this function at the moment for HTrace compatiblity,
// in fact all threads share a single global tracer for OpenTracing.
public static Tracer curThreadTracer() {
return globalTracer;
}
/***
* Return active span.
* @return org.apache.hadoop.tracing.Span
*/
public static Span getCurrentSpan() {
return null;
}
public TraceScope newScope(String description) {
return nullTraceScope;
}
public Span newSpan(String description, SpanContext spanCtx) {
return new Span();
}
public TraceScope newScope(String description, SpanContext spanCtx) {
return nullTraceScope;
}
public TraceScope newScope(String description, SpanContext spanCtx,
boolean finishSpanOnClose) {
return nullTraceScope;
}
public TraceScope activateSpan(Span span) {
return nullTraceScope;
}
public void close() {
}
public String getName() {
return name;
}
public static class Builder {
static Tracer globalTracer;
private String name;
public Builder(final String name) {
this.name = name;
}
public Builder conf(TraceConfiguration conf) {
return this;
}
public Tracer build() {
if (globalTracer == null) {
globalTracer = new Tracer(name);
}
return globalTracer;
}
}
}

100
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/TracerConfigurationManager.java
View File

@ -1,100 +0,0 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
import java.io.IOException;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.tracing.SpanReceiverInfo.ConfigurationPair;
import org.apache.htrace.core.SpanReceiver;
import org.apache.htrace.core.TracerPool;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This class provides functions for managing the tracer configuration at
* runtime via an RPC protocol.
*/
@InterfaceAudience.Private
public class TracerConfigurationManager implements TraceAdminProtocol {
private static final Logger LOG =
LoggerFactory.getLogger(TracerConfigurationManager.class);
private final String confPrefix;
private final Configuration conf;
public TracerConfigurationManager(String confPrefix, Configuration conf) {
this.confPrefix = confPrefix;
this.conf = conf;
}
public synchronized SpanReceiverInfo[] listSpanReceivers()
throws IOException {
TracerPool pool = TracerPool.getGlobalTracerPool();
SpanReceiver[] receivers = pool.getReceivers();
SpanReceiverInfo[] info = new SpanReceiverInfo[receivers.length];
for (int i = 0; i < receivers.length; i++) {
SpanReceiver receiver = receivers[i];
info[i] = new SpanReceiverInfo(receiver.getId(),
receiver.getClass().getName());
}
return info;
}
public synchronized long addSpanReceiver(SpanReceiverInfo info)
throws IOException {
StringBuilder configStringBuilder = new StringBuilder();
String prefix = "";
for (ConfigurationPair pair : info.configPairs) {
configStringBuilder.append(prefix).append(pair.getKey()).
append(" = ").append(pair.getValue());
prefix = ", ";
}
SpanReceiver rcvr = null;
try {
rcvr = new SpanReceiver.Builder(TraceUtils.wrapHadoopConf(
confPrefix, conf, info.configPairs)).
className(info.getClassName().trim()).
build();
} catch (RuntimeException e) {
LOG.info("Failed to add SpanReceiver " + info.getClassName() +
" with configuration " + configStringBuilder.toString(), e);
throw e;
}
TracerPool.getGlobalTracerPool().addReceiver(rcvr);
LOG.info("Successfully added SpanReceiver " + info.getClassName() +
" with configuration " + configStringBuilder.toString());
return rcvr.getId();
}
public synchronized void removeSpanReceiver(long spanReceiverId)
throws IOException {
SpanReceiver[] receivers =
TracerPool.getGlobalTracerPool().getReceivers();
for (SpanReceiver receiver : receivers) {
if (receiver.getId() == spanReceiverId) {
TracerPool.getGlobalTracerPool().removeAndCloseReceiver(receiver);
LOG.info("Successfully removed SpanReceiver " + spanReceiverId +
" with class " + receiver.getClass().getName());
return;
}
}
throw new IOException("There is no span receiver with id " + spanReceiverId);
}
}

13
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ProtoUtil.java
View File

@ -29,8 +29,9 @@
import org.apache.hadoop.ipc.protobuf.RpcHeaderProtos.*;
import org.apache.hadoop.security.SaslRpcServer.AuthMethod;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.htrace.core.Span;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Span;
import org.apache.hadoop.tracing.Tracer;
import org.apache.hadoop.tracing.TraceUtils;
import org.apache.hadoop.thirdparty.protobuf.ByteString;
@ -180,10 +181,10 @@ public static RpcRequestHeaderProto makeRpcRequestHeader(RPC.RpcKind rpcKind,
// Add tracing info if we are currently tracing.
Span span = Tracer.getCurrentSpan();
if (span != null) {
result.setTraceInfo(RPCTraceInfoProto.newBuilder()
.setTraceId(span.getSpanId().getHigh())
.setParentId(span.getSpanId().getLow())
.build());
RPCTraceInfoProto.Builder traceInfoProtoBuilder =
RPCTraceInfoProto.newBuilder().setSpanContext(
TraceUtils.spanContextToByteString(span.getContext()));
result.setTraceInfo(traceInfoProtoBuilder);
}
// Add caller context if it is not null

2
hadoop-common-project/hadoop-common/src/main/proto/RpcHeader.proto
View File

@ -63,7 +63,7 @@ enum RpcKindProto {
message RPCTraceInfoProto {
optional int64 traceId = 1; // parentIdHigh
optional int64 parentId = 2; // parentIdLow
optional bytes spanContext = 3; // Trace SpanContext
}
/**

11
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestFsShell.java
View File

@ -21,10 +21,7 @@
import org.apache.hadoop.fs.shell.Command;
import org.apache.hadoop.fs.shell.CommandFactory;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.tracing.SetSpanReceiver;
import org.apache.hadoop.util.ToolRunner;
import org.apache.htrace.core.AlwaysSampler;
import org.apache.htrace.core.Tracer;
import org.hamcrest.core.StringContains;
import org.junit.Assert;
import org.junit.Test;
@ -53,10 +50,6 @@ public void testConfWithInvalidFile() throws Throwable {
public void testTracing() throws Throwable {
Configuration conf = new Configuration();
String prefix = "fs.shell.htrace.";
conf.set(prefix + Tracer.SPAN_RECEIVER_CLASSES_KEY,
SetSpanReceiver.class.getName());
conf.set(prefix + Tracer.SAMPLER_CLASSES_KEY,
AlwaysSampler.class.getName());
conf.setQuietMode(false);
FsShell shell = new FsShell(conf);
int res;
@ -65,10 +58,6 @@ public void testTracing() throws Throwable {
} finally {
shell.close();
}
SetSpanReceiver.assertSpanNamesFound(new String[]{"help"});
Assert.assertEquals("-help ls cat",
SetSpanReceiver.getMap()
.get("help").get(0).getKVAnnotations().get("args"));
}
@Test

110
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/tracing/SetSpanReceiver.java
View File

@ -1,110 +0,0 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
import java.util.function.Supplier;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.htrace.core.Span;
import org.apache.htrace.core.SpanId;
import org.apache.htrace.core.SpanReceiver;
import org.apache.htrace.core.HTraceConfiguration;
import java.util.Collection;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.TimeoutException;
import org.junit.Assert;
/**
* Span receiver that puts all spans into a single set.
* This is useful for testing.
* <p>
* We're not using HTrace's POJOReceiver here so as that doesn't
* push all the metrics to a static place, and would make testing
* SpanReceiverHost harder.
*/
public class SetSpanReceiver extends SpanReceiver {
public SetSpanReceiver(HTraceConfiguration conf) {
}
public void receiveSpan(Span span) {
SetHolder.spans.put(span.getSpanId(), span);
}
public void close() {
}
public static void clear() {
SetHolder.spans.clear();
}
public static int size() {
return SetHolder.spans.size();
}
public static Collection<Span> getSpans() {
return SetHolder.spans.values();
}
public static Map<String, List<Span>> getMap() {
return SetHolder.getMap();
}
public static class SetHolder {
public static ConcurrentHashMap<SpanId, Span> spans =
new ConcurrentHashMap<SpanId, Span>();
public static Map<String, List<Span>> getMap() {
Map<String, List<Span>> map = new HashMap<String, List<Span>>();
for (Span s : spans.values()) {
List<Span> l = map.get(s.getDescription());
if (l == null) {
l = new LinkedList<Span>();
map.put(s.getDescription(), l);
}
l.add(s);
}
return map;
}
}
public static void assertSpanNamesFound(final String[] expectedSpanNames) {
try {
GenericTestUtils.waitFor(new Supplier<Boolean>() {
@Override
public Boolean get() {
Map<String, List<Span>> map = SetSpanReceiver.SetHolder.getMap();
for (String spanName : expectedSpanNames) {
if (!map.containsKey(spanName)) {
return false;
}
}
return true;
}
}, 100, 1000);
} catch (TimeoutException e) {
Assert.fail("timed out to get expected spans: " + e.getMessage());
} catch (InterruptedException e) {
Assert.fail("interrupted while waiting spans: " + e.getMessage());
}
}
}

71
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/tracing/TestTraceUtils.java
View File

@ -1,71 +0,0 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
import static org.junit.Assert.assertEquals;
import java.net.URI;
import java.util.LinkedList;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.LocalFileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.tracing.SpanReceiverInfo.ConfigurationPair;
import org.apache.htrace.core.HTraceConfiguration;
import org.junit.Test;
public class TestTraceUtils {
private static String TEST_PREFIX = "test.prefix.htrace.";
@Test
public void testWrappedHadoopConf() {
String key = "sampler";
String value = "ProbabilitySampler";
Configuration conf = new Configuration();
conf.set(TEST_PREFIX + key, value);
HTraceConfiguration wrapped = TraceUtils.wrapHadoopConf(TEST_PREFIX, conf);
assertEquals(value, wrapped.get(key));
}
@Test
public void testExtraConfig() {
String key = "test.extra.config";
String oldValue = "old value";
String newValue = "new value";
Configuration conf = new Configuration();
conf.set(TEST_PREFIX + key, oldValue);
LinkedList<ConfigurationPair> extraConfig =
new LinkedList<ConfigurationPair>();
extraConfig.add(new ConfigurationPair(TEST_PREFIX + key, newValue));
HTraceConfiguration wrapped = TraceUtils.wrapHadoopConf(TEST_PREFIX, conf, extraConfig);
assertEquals(newValue, wrapped.get(key));
}
/**
* Test tracing the globber. This is a regression test for HDFS-9187.
*/
@Test
public void testTracingGlobber() throws Exception {
// Bypass the normal FileSystem object creation path by just creating an
// instance of a subclass.
FileSystem fs = new LocalFileSystem();
fs.initialize(new URI("file:///"), new Configuration());
fs.globStatus(new Path("/"));
fs.close();
}
}

4
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
View File

@ -188,8 +188,8 @@
import org.apache.hadoop.util.DataChecksum.Type;
import org.apache.hadoop.util.Progressable;
import org.apache.hadoop.util.Time;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

4
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSInotifyEventInputStream.java
View File

@ -26,8 +26,8 @@
import org.apache.hadoop.hdfs.inotify.MissingEventsException;
import org.apache.hadoop.hdfs.protocol.ClientProtocol;
import org.apache.hadoop.util.Time;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

11
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java
View File

@ -68,7 +68,7 @@
import org.apache.hadoop.util.Progressable;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.Time;
import org.apache.htrace.core.TraceScope;
import org.apache.hadoop.tracing.TraceScope;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -938,8 +938,8 @@ protected void recoverLease(boolean recoverLeaseOnCloseException) {
void completeFile() throws IOException {
// get last block before destroying the streamer
ExtendedBlock lastBlock = getStreamer().getBlock();
try (TraceScope ignored =
dfsClient.getTracer().newScope("completeFile")) {
try (TraceScope ignored = dfsClient.getTracer()
.newScope("DFSOutputStream#completeFile")) {
completeFile(lastBlock);
}
}
@ -995,7 +995,10 @@ protected void completeFile(ExtendedBlock last) throws IOException {
DFSClient.LOG.info(msg);
throw new IOException(msg);
}
try {
try (TraceScope scope = dfsClient.getTracer()
.newScope("DFSOutputStream#completeFile: Retry")) {
scope.addKVAnnotation("retries left", retries);
scope.addKVAnnotation("sleeptime (sleeping for)", sleeptime);
if (retries == 0) {
throw new IOException("Unable to close file because the last block "
+ last + " does not have enough number of replicas.");

33
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSPacket.java
View File

@ -28,9 +28,8 @@
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
import org.apache.hadoop.hdfs.protocol.datatransfer.PacketHeader;
import org.apache.hadoop.hdfs.util.ByteArrayManager;
import org.apache.htrace.core.Span;
import org.apache.htrace.core.SpanId;
import org.apache.htrace.core.TraceScope;
import org.apache.hadoop.tracing.Span;
import org.apache.hadoop.tracing.SpanContext;
/****************************************************************
* DFSPacket is used by DataStreamer and DFSOutputStream.
@ -41,7 +40,7 @@
@InterfaceAudience.Private
public class DFSPacket {
public static final long HEART_BEAT_SEQNO = -1L;
private static SpanId[] EMPTY = new SpanId[0];
private static final SpanContext[] EMPTY = new SpanContext[0];
private final long seqno; // sequence number of buffer in block
private final long offsetInBlock; // offset in block
private boolean syncBlock; // this packet forces the current block to disk
@ -68,9 +67,9 @@ public class DFSPacket {
private int checksumPos;
private final int dataStart;
private int dataPos;
private SpanId[] traceParents = EMPTY;
private SpanContext[] traceParents = EMPTY;
private int traceParentsUsed;
private TraceScope scope;
private Span span;
/**
* Create a new packet.
@ -306,11 +305,11 @@ public void addTraceParent(Span span) {
if (span == null) {
return;
}
addTraceParent(span.getSpanId());
addTraceParent(span.getContext());
}
public void addTraceParent(SpanId id) {
if (!id.isValid()) {
public void addTraceParent(SpanContext ctx) {
if (ctx == null) {
return;
}
if (traceParentsUsed == traceParents.length) {
@ -318,7 +317,7 @@ public void addTraceParent(SpanId id) {
traceParents.length * 2;
traceParents = Arrays.copyOf(traceParents, newLength);
}
traceParents[traceParentsUsed] = id;
traceParents[traceParentsUsed] = ctx;
traceParentsUsed++;
}
@ -329,17 +328,17 @@ public void addTraceParent(SpanId id) {
* <p>
* Protected by the DFSOutputStream dataQueue lock.
*/
public SpanId[] getTraceParents() {
public SpanContext[] getTraceParents() {
// Remove duplicates from the array.
int len = traceParentsUsed;
Arrays.sort(traceParents, 0, len);
int i = 0, j = 0;
SpanId prevVal = SpanId.INVALID;
SpanContext prevVal = null;
while (true) {
if (i == len) {
break;
}
SpanId val = traceParents[i];
SpanContext val = traceParents[i];
if (!val.equals(prevVal)) {
traceParents[j] = val;
j++;
@ -354,11 +353,11 @@ public SpanId[] getTraceParents() {
return traceParents;
}
public void setTraceScope(TraceScope scope) {
this.scope = scope;
public void setSpan(Span span) {
this.span = span;
}
public TraceScope getTraceScope() {
return scope;
public Span getSpan() {
return span;
}
}

2
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSStripedOutputStream.java
View File

@ -45,7 +45,7 @@
import org.apache.hadoop.util.DataChecksum;
import org.apache.hadoop.util.Progressable;
import org.apache.hadoop.util.Time;
import org.apache.htrace.core.TraceScope;
import org.apache.hadoop.tracing.TraceScope;
import java.io.IOException;
import java.io.InterruptedIOException;

48
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DataStreamer.java
View File

@ -75,10 +75,10 @@
import org.apache.hadoop.util.DataChecksum;
import org.apache.hadoop.util.Progressable;
import org.apache.hadoop.util.Time;
import org.apache.htrace.core.Span;
import org.apache.htrace.core.SpanId;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Span;
import org.apache.hadoop.tracing.SpanContext;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
import org.apache.hadoop.thirdparty.com.google.common.cache.CacheBuilder;
import org.apache.hadoop.thirdparty.com.google.common.cache.CacheLoader;
@ -698,11 +698,14 @@ public void run() {
LOG.debug("Thread interrupted", e);
}
one = dataQueue.getFirst(); // regular data packet
SpanId[] parents = one.getTraceParents();
if (parents.length > 0) {
SpanContext[] parents = one.getTraceParents();
if (parents != null && parents.length > 0) {
// The original code stored multiple parents in the DFSPacket, and
// use them ALL here when creating a new Span. We only use the
// last one FOR NOW. Moreover, we don't activate the Span for now.
scope = dfsClient.getTracer().
newScope("dataStreamer", parents[0]);
scope.getSpan().setParents(parents);
newScope("dataStreamer", parents[0], false);
//scope.getSpan().setParents(parents);
}
}
}
@ -748,14 +751,14 @@ public void run() {
}
// send the packet
SpanId spanId = SpanId.INVALID;
SpanContext spanContext = null;
synchronized (dataQueue) {
// move packet from dataQueue to ackQueue
if (!one.isHeartbeatPacket()) {
if (scope != null) {
spanId = scope.getSpanId();
scope.detach();
one.setTraceScope(scope);
one.setSpan(scope.span());
spanContext = scope.span().getContext();
scope.close();
}
scope = null;
dataQueue.removeFirst();
@ -769,7 +772,7 @@ public void run() {
// write out data to remote datanode
try (TraceScope ignored = dfsClient.getTracer().
newScope("DataStreamer#writeTo", spanId)) {
newScope("DataStreamer#writeTo", spanContext)) {
one.writeTo(blockStream);
blockStream.flush();
} catch (IOException e) {
@ -1171,10 +1174,10 @@ public void run() {
block.setNumBytes(one.getLastByteOffsetBlock());
synchronized (dataQueue) {
scope = one.getTraceScope();
if (scope != null) {
scope.reattach();
one.setTraceScope(null);
if (one.getSpan() != null) {
scope = new TraceScope(new Span());
// TODO: Use scope = Tracer.curThreadTracer().activateSpan ?
one.setSpan(null);
}
lastAckedSeqno = seqno;
pipelineRecoveryCount = 0;
@ -1269,11 +1272,10 @@ private boolean processDatanodeOrExternalError() throws IOException {
synchronized (dataQueue) {
DFSPacket endOfBlockPacket = dataQueue.remove(); // remove the end of block packet
// Close any trace span associated with this Packet
TraceScope scope = endOfBlockPacket.getTraceScope();
if (scope != null) {
scope.reattach();
scope.close();
endOfBlockPacket.setTraceScope(null);
Span span = endOfBlockPacket.getSpan();
if (span != null) {
span.finish();
endOfBlockPacket.setSpan(null);
}
assert endOfBlockPacket.isLastPacketInBlock();
assert lastAckedSeqno == endOfBlockPacket.getSeqno() - 1;
@ -1949,7 +1951,7 @@ ErrorState getErrorState() {
void queuePacket(DFSPacket packet) {
synchronized (dataQueue) {
if (packet == null) return;
packet.addTraceParent(Tracer.getCurrentSpanId());
packet.addTraceParent(Tracer.getCurrentSpan());
dataQueue.addLast(packet);
lastQueuedSeqno = packet.getSeqno();
LOG.debug("Queued {}, {}", packet, this);

4
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/CacheDirectiveIterator.java
View File

@ -27,8 +27,8 @@
import org.apache.hadoop.ipc.RemoteException;
import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
/**
* CacheDirectiveIterator is a remote iterator that iterates cache directives.

4
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/CachePoolIterator.java
View File

@ -23,8 +23,8 @@
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.BatchedRemoteIterator;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
/**
* CachePoolIterator is a remote iterator that iterates cache pools.

4
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/EncryptionZoneIterator.java
View File

@ -23,8 +23,8 @@
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.BatchedRemoteIterator;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
/**
* EncryptionZoneIterator is a remote iterator that iterates over encryption

4
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/OpenFilesIterator.java
View File

@ -24,8 +24,8 @@
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.BatchedRemoteIterator;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
/**
* OpenFilesIterator is a remote iterator that iterates over the open files list

4
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/ReencryptionStatusIterator.java
View File

@ -20,8 +20,8 @@
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.fs.BatchedRemoteIterator;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
import java.io.IOException;

24
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/DataTransferProtoUtil.java
View File

@ -35,8 +35,9 @@
import org.apache.hadoop.hdfs.security.token.block.InvalidBlockTokenException;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.util.DataChecksum;
import org.apache.htrace.core.SpanId;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Span;
import org.apache.hadoop.tracing.Tracer;
import org.apache.hadoop.tracing.TraceUtils;
/**
* Static utilities for dealing with the protocol buffers used by the
@ -87,23 +88,16 @@ static BaseHeaderProto buildBaseHeader(ExtendedBlock blk,
BaseHeaderProto.Builder builder = BaseHeaderProto.newBuilder()
.setBlock(PBHelperClient.convert(blk))
.setToken(PBHelperClient.convert(blockToken));
SpanId spanId = Tracer.getCurrentSpanId();
if (spanId.isValid()) {
builder.setTraceInfo(DataTransferTraceInfoProto.newBuilder()
.setTraceId(spanId.getHigh())
.setParentId(spanId.getLow()));
Span span = Tracer.getCurrentSpan();
if (span != null) {
DataTransferTraceInfoProto.Builder traceInfoProtoBuilder =
DataTransferTraceInfoProto.newBuilder().setSpanContext(
TraceUtils.spanContextToByteString(span.getContext()));
builder.setTraceInfo(traceInfoProtoBuilder);
}
return builder.build();
}
public static SpanId fromProto(DataTransferTraceInfoProto proto) {
if ((proto != null) && proto.hasTraceId() &&
proto.hasParentId()) {
return new SpanId(proto.getTraceId(), proto.getParentId());
}
return null;
}
public static void checkBlockOpStatus(
BlockOpResponseProto response,
String logInfo) throws IOException {

27
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/Sender.java
View File

@ -52,8 +52,9 @@
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.util.DataChecksum;
import org.apache.htrace.core.SpanId;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Span;
import org.apache.hadoop.tracing.Tracer;
import org.apache.hadoop.tracing.TraceUtils;
import org.apache.hadoop.thirdparty.protobuf.Message;
@ -212,11 +213,12 @@ public void releaseShortCircuitFds(SlotId slotId) throws IOException {
ReleaseShortCircuitAccessRequestProto.Builder builder =
ReleaseShortCircuitAccessRequestProto.newBuilder().
setSlotId(PBHelperClient.convert(slotId));
SpanId spanId = Tracer.getCurrentSpanId();
if (spanId.isValid()) {
builder.setTraceInfo(DataTransferTraceInfoProto.newBuilder().
setTraceId(spanId.getHigh()).
setParentId(spanId.getLow()));
Span span = Tracer.getCurrentSpan();
if (span != null) {
DataTransferTraceInfoProto.Builder traceInfoProtoBuilder =
DataTransferTraceInfoProto.newBuilder().setSpanContext(
TraceUtils.spanContextToByteString(span.getContext()));
builder.setTraceInfo(traceInfoProtoBuilder);
}
ReleaseShortCircuitAccessRequestProto proto = builder.build();
send(out, Op.RELEASE_SHORT_CIRCUIT_FDS, proto);
@ -227,11 +229,12 @@ public void requestShortCircuitShm(String clientName) throws IOException {
ShortCircuitShmRequestProto.Builder builder =
ShortCircuitShmRequestProto.newBuilder().
setClientName(clientName);
SpanId spanId = Tracer.getCurrentSpanId();
if (spanId.isValid()) {
builder.setTraceInfo(DataTransferTraceInfoProto.newBuilder().
setTraceId(spanId.getHigh()).
setParentId(spanId.getLow()));
Span span = Tracer.getCurrentSpan();
if (span != null) {
DataTransferTraceInfoProto.Builder traceInfoProtoBuilder =
DataTransferTraceInfoProto.newBuilder().setSpanContext(
TraceUtils.spanContextToByteString(span.getContext()));
builder.setTraceInfo(traceInfoProtoBuilder);
}
ShortCircuitShmRequestProto proto = builder.build();
send(out, Op.REQUEST_SHORT_CIRCUIT_SHM, proto);

5
hadoop-hdfs-project/hadoop-hdfs-client/src/main/proto/datatransfer.proto
View File

@ -58,8 +58,9 @@ message BaseHeaderProto {
}
message DataTransferTraceInfoProto {
required uint64 traceId = 1;
required uint64 parentId = 2;
optional uint64 traceId = 1;
optional uint64 parentId = 2;
optional bytes spanContext = 3;
}
message ClientOperationHeaderProto {

26
hadoop-hdfs-project/hadoop-hdfs-client/src/test/java/org/apache/hadoop/hdfs/TestDFSPacket.java
View File

@ -20,7 +20,6 @@
import java.util.Random;
import org.apache.hadoop.hdfs.protocol.datatransfer.PacketHeader;
import org.apache.hadoop.io.DataOutputBuffer;
import org.apache.htrace.core.SpanId;
import org.junit.Assert;
import org.junit.Test;
@ -66,29 +65,4 @@ public static void assertArrayRegionsEqual(byte []buf1, int off1, byte []buf2,
}
}
}
@Test
public void testAddParentsGetParents() throws Exception {
DFSPacket p = new DFSPacket(null, maxChunksPerPacket,
0, 0, checksumSize, false);
SpanId parents[] = p.getTraceParents();
Assert.assertEquals(0, parents.length);
p.addTraceParent(new SpanId(0, 123));
p.addTraceParent(new SpanId(0, 123));
parents = p.getTraceParents();
Assert.assertEquals(1, parents.length);
Assert.assertEquals(new SpanId(0, 123), parents[0]);
parents = p.getTraceParents(); // test calling 'get' again.
Assert.assertEquals(1, parents.length);
Assert.assertEquals(new SpanId(0, 123), parents[0]);
p.addTraceParent(new SpanId(0, 1));
p.addTraceParent(new SpanId(0, 456));
p.addTraceParent(new SpanId(0, 789));
parents = p.getTraceParents();
Assert.assertEquals(4, parents.length);
Assert.assertEquals(new SpanId(0, 1), parents[0]);
Assert.assertEquals(new SpanId(0, 123), parents[1]);
Assert.assertEquals(new SpanId(0, 456), parents[2]);
Assert.assertEquals(new SpanId(0, 789), parents[3]);
}
}

4
hadoop-hdfs-project/hadoop-hdfs/pom.xml
View File

@ -180,10 +180,6 @@ https://maven.apache.org/xsd/maven-4.0.0.xsd">
<artifactId>netty-all</artifactId>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.htrace</groupId>
<artifactId>htrace-core4</artifactId>
</dependency>
<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-kms</artifactId>

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/HDFSPolicyProvider.java
View File

@ -37,7 +37,6 @@
import org.apache.hadoop.tools.GetUserMappingsProtocol;
import org.apache.hadoop.ipc.RefreshCallQueueProtocol;
import org.apache.hadoop.ipc.GenericRefreshProtocol;
import org.apache.hadoop.tracing.TraceAdminProtocol;
/**
* {@link PolicyProvider} for HDFS protocols.
@ -80,9 +79,6 @@ public class HDFSPolicyProvider extends PolicyProvider {
new Service(
CommonConfigurationKeys.HADOOP_SECURITY_SERVICE_AUTHORIZATION_GENERIC_REFRESH,
GenericRefreshProtocol.class),
new Service(
CommonConfigurationKeys.HADOOP_SECURITY_SERVICE_AUTHORIZATION_TRACING,
TraceAdminProtocol.class),
new Service(
CommonConfigurationKeys.HADOOP_SECURITY_SERVICE_AUTHORIZATION_DATANODE_LIFELINE,
DatanodeLifelineProtocol.class),

26
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/Receiver.java
View File

@ -46,9 +46,11 @@
import org.apache.hadoop.hdfs.protocolPB.PBHelperClient;
import org.apache.hadoop.hdfs.server.datanode.CachingStrategy;
import org.apache.hadoop.hdfs.shortcircuit.ShortCircuitShm.SlotId;
import org.apache.htrace.core.SpanId;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.SpanContext;
import org.apache.hadoop.tracing.TraceScope;
import org.apache.hadoop.tracing.Tracer;
import org.apache.hadoop.tracing.TraceUtils;
import org.apache.hadoop.thirdparty.protobuf.ByteString;
/** Receiver */
@InterfaceAudience.Private
@ -77,12 +79,13 @@ protected final Op readOp() throws IOException {
return Op.read(in);
}
private TraceScope continueTraceSpan(DataTransferTraceInfoProto proto,
private TraceScope continueTraceSpan(ByteString spanContextBytes,
String description) {
TraceScope scope = null;
SpanId spanId = fromProto(proto);
if (spanId != null) {
scope = tracer.newScope(description, spanId);
SpanContext spanContext =
TraceUtils.byteStringToSpanContext(spanContextBytes);
if (spanContext != null) {
scope = tracer.newScope(description, spanContext);
}
return scope;
}
@ -94,7 +97,8 @@ private TraceScope continueTraceSpan(ClientOperationHeaderProto header,
private TraceScope continueTraceSpan(BaseHeaderProto header,
String description) {
return continueTraceSpan(header.getTraceInfo(), description);
return continueTraceSpan(header.getTraceInfo().getSpanContext(),
description);
}
/** Process op by the corresponding method. */
@ -243,7 +247,8 @@ private void opReleaseShortCircuitFds(DataInputStream in)
throws IOException {
final ReleaseShortCircuitAccessRequestProto proto =
ReleaseShortCircuitAccessRequestProto.parseFrom(vintPrefixed(in));
TraceScope traceScope = continueTraceSpan(proto.getTraceInfo(),
TraceScope traceScope = continueTraceSpan(
proto.getTraceInfo().getSpanContext(),
proto.getClass().getSimpleName());
try {
releaseShortCircuitFds(PBHelperClient.convert(proto.getSlotId()));
@ -256,7 +261,8 @@ private void opReleaseShortCircuitFds(DataInputStream in)
private void opRequestShortCircuitShm(DataInputStream in) throws IOException {
final ShortCircuitShmRequestProto proto =
ShortCircuitShmRequestProto.parseFrom(vintPrefixed(in));
TraceScope traceScope = continueTraceSpan(proto.getTraceInfo(),
TraceScope traceScope = continueTraceSpan(
proto.getTraceInfo().getSpanContext(),
proto.getClass().getSimpleName());
try {
requestShortCircuitShm(proto.getClientName());

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/server/JournalNode.java
View File

@ -48,7 +48,7 @@
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Tracer;
import org.eclipse.jetty.util.ajax.JSON;
import javax.management.ObjectName;

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockReceiver.java
View File

@ -58,8 +58,8 @@
import org.apache.hadoop.util.DataChecksum;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.Time;
import org.apache.htrace.core.Span;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Span;
import org.apache.hadoop.tracing.Tracer;
import static org.apache.hadoop.io.nativeio.NativeIO.POSIX.POSIX_FADV_DONTNEED;
import static org.apache.hadoop.io.nativeio.NativeIO.POSIX.SYNC_FILE_RANGE_WRITE;

7
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockSender.java
View File

@ -34,6 +34,7 @@
import org.apache.commons.logging.Log;
import org.apache.hadoop.fs.ChecksumException;
import org.apache.hadoop.fs.FsTracer;
import org.apache.hadoop.hdfs.DFSUtilClient;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.protocol.Block;
@ -50,7 +51,7 @@
import org.apache.hadoop.net.SocketOutputStream;
import org.apache.hadoop.util.AutoCloseableLock;
import org.apache.hadoop.util.DataChecksum;
import org.apache.htrace.core.TraceScope;
import org.apache.hadoop.tracing.TraceScope;
import static org.apache.hadoop.io.nativeio.NativeIO.POSIX.POSIX_FADV_DONTNEED;
import static org.apache.hadoop.io.nativeio.NativeIO.POSIX.POSIX_FADV_SEQUENTIAL;
@ -750,8 +751,8 @@ public void verifyChecksum(final byte[] buf, final int dataOffset,
*/
long sendBlock(DataOutputStream out, OutputStream baseStream,
DataTransferThrottler throttler) throws IOException {
final TraceScope scope = datanode.getTracer().
newScope("sendBlock_" + block.getBlockId());
final TraceScope scope = FsTracer.get(null)
.newScope("sendBlock_" + block.getBlockId());
try {
return doSendBlock(out, baseStream, throttler);
} finally {

45
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
View File

@ -204,16 +204,10 @@
import org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.security.token.TokenIdentifier;
import org.apache.hadoop.tracing.SpanReceiverInfo;
import org.apache.hadoop.tracing.TraceAdminPB.TraceAdminService;
import org.apache.hadoop.tracing.TraceAdminProtocol;
import org.apache.hadoop.tracing.TraceAdminProtocolPB;
import org.apache.hadoop.tracing.TraceAdminProtocolServerSideTranslatorPB;
import org.apache.hadoop.tracing.TraceUtils;
import org.apache.hadoop.tracing.TracerConfigurationManager;
import org.apache.hadoop.util.DiskChecker.DiskErrorException;
import org.apache.hadoop.util.concurrent.HadoopExecutors;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Tracer;
import org.eclipse.jetty.util.ajax.JSON;
import org.apache.hadoop.thirdparty.com.google.common.annotations.VisibleForTesting;
@ -262,7 +256,7 @@
@InterfaceAudience.Private
public class DataNode extends ReconfigurableBase
implements InterDatanodeProtocol, ClientDatanodeProtocol,
TraceAdminProtocol, DataNodeMXBean, ReconfigurationProtocol {
DataNodeMXBean, ReconfigurationProtocol {
public static final Logger LOG = LoggerFactory.getLogger(DataNode.class);
static{
@ -389,7 +383,6 @@ public static InetSocketAddress createSocketAddr(String target) {
private BlockRecoveryWorker blockRecoveryWorker;
private ErasureCodingWorker ecWorker;
private final Tracer tracer;
private final TracerConfigurationManager tracerConfigurationManager;
private static final int NUM_CORES = Runtime.getRuntime()
.availableProcessors();
private static final double CONGESTION_RATIO = 1.5;
@ -406,7 +399,7 @@ public static InetSocketAddress createSocketAddr(String target) {
private static Tracer createTracer(Configuration conf) {
return new Tracer.Builder("DataNode").
conf(TraceUtils.wrapHadoopConf(DATANODE_HTRACE_PREFIX , conf)).
conf(TraceUtils.wrapHadoopConf(DATANODE_HTRACE_PREFIX, conf)).
build();
}
@ -422,8 +415,6 @@ private static Tracer createTracer(Configuration conf) {
DataNode(final Configuration conf) throws DiskErrorException {
super(conf);
this.tracer = createTracer(conf);
this.tracerConfigurationManager =
new TracerConfigurationManager(DATANODE_HTRACE_PREFIX, conf);
this.fileIoProvider = new FileIoProvider(conf, this);
this.fileDescriptorPassingDisabledReason = null;
this.maxNumberOfBlocksToLog = 0;
@ -451,8 +442,6 @@ private static Tracer createTracer(Configuration conf) {
final SecureResources resources) throws IOException {
super(conf);
this.tracer = createTracer(conf);
this.tracerConfigurationManager =
new TracerConfigurationManager(DATANODE_HTRACE_PREFIX, conf);
this.fileIoProvider = new FileIoProvider(conf, this);
this.blockScanner = new BlockScanner(this);
this.lastDiskErrorCheck = 0;
@ -1038,16 +1027,6 @@ private void initIpcServer() throws IOException {
DFSUtil.addPBProtocol(getConf(), InterDatanodeProtocolPB.class, service,
ipcServer);
TraceAdminProtocolServerSideTranslatorPB traceAdminXlator =
new TraceAdminProtocolServerSideTranslatorPB(this);
BlockingService traceAdminService = TraceAdminService
.newReflectiveBlockingService(traceAdminXlator);
DFSUtil.addPBProtocol(
getConf(),
TraceAdminProtocolPB.class,
traceAdminService,
ipcServer);
LOG.info("Opened IPC server at {}", ipcServer.getListenerAddress());
// set service-level authorization security policy
@ -3572,24 +3551,6 @@ public long getLastDiskErrorCheck() {
return lastDiskErrorCheck;
}
@Override
public SpanReceiverInfo[] listSpanReceivers() throws IOException {
checkSuperuserPrivilege();
return tracerConfigurationManager.listSpanReceivers();
}
@Override
public long addSpanReceiver(SpanReceiverInfo info) throws IOException {
checkSuperuserPrivilege();
return tracerConfigurationManager.addSpanReceiver(info);
}
@Override
public void removeSpanReceiver(long id) throws IOException {
checkSuperuserPrivilege();
tracerConfigurationManager.removeSpanReceiver(id);
}
public BlockRecoveryWorker getBlockRecoveryWorker(){
return blockRecoveryWorker;
}

3
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataXceiver.java
View File

@ -22,6 +22,7 @@
import org.apache.hadoop.thirdparty.protobuf.ByteString;
import javax.crypto.SecretKey;
import org.apache.commons.logging.Log;
import org.apache.hadoop.fs.FsTracer;
import org.apache.hadoop.fs.StorageType;
import org.apache.hadoop.hdfs.DFSUtilClient;
import org.apache.hadoop.hdfs.ExtendedBlockId;
@ -135,7 +136,7 @@ public static DataXceiver create(Peer peer, DataNode dn,
private DataXceiver(Peer peer, DataNode datanode,
DataXceiverServer dataXceiverServer) throws IOException {
super(datanode.getTracer());
super(FsTracer.get(null));
this.peer = peer;
this.dnConf = datanode.getDnConf();
this.socketIn = peer.getInputStream();

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetUtil.java
View File

@ -34,6 +34,7 @@
import java.nio.file.Paths;
import java.util.Arrays;
import com.fasterxml.jackson.databind.util.ByteBufferBackedInputStream;
import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
@ -45,7 +46,6 @@
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.util.DataChecksum;
import org.apache.htrace.shaded.fasterxml.jackson.databind.util.ByteBufferBackedInputStream;
/** Utility methods. */
@InterfaceAudience.Private

9
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java
View File

@ -88,9 +88,7 @@
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.authorize.RefreshAuthorizationPolicyProtocol;
import org.apache.hadoop.tools.GetUserMappingsProtocol;
import org.apache.hadoop.tracing.TraceAdminProtocol;
import org.apache.hadoop.tracing.TraceUtils;
import org.apache.hadoop.tracing.TracerConfigurationManager;
import org.apache.hadoop.util.ExitUtil.ExitException;
import org.apache.hadoop.util.GenericOptionsParser;
import org.apache.hadoop.util.JvmPauseMonitor;
@ -99,7 +97,7 @@
import org.apache.hadoop.util.Time;
import org.apache.hadoop.util.GcTimeMonitor;
import org.apache.hadoop.util.GcTimeMonitor.Builder;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Tracer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -372,8 +370,6 @@ public long getProtocolVersion(String protocol,
return RefreshCallQueueProtocol.versionID;
} else if (protocol.equals(GetUserMappingsProtocol.class.getName())){
return GetUserMappingsProtocol.versionID;
} else if (protocol.equals(TraceAdminProtocol.class.getName())){
return TraceAdminProtocol.versionID;
} else {
throw new IOException("Unknown protocol to name node: " + protocol);
}
@ -428,7 +424,6 @@ public long getProtocolVersion(String protocol,
private GcTimeMonitor gcTimeMonitor;
private ObjectName nameNodeStatusBeanName;
protected final Tracer tracer;
protected final TracerConfigurationManager tracerConfigurationManager;
ScheduledThreadPoolExecutor metricsLoggerTimer;
/**
@ -997,8 +992,6 @@ protected NameNode(Configuration conf, NamenodeRole role)
this.tracer = new Tracer.Builder("NameNode").
conf(TraceUtils.wrapHadoopConf(NAMENODE_HTRACE_PREFIX, conf)).
build();
this.tracerConfigurationManager =
new TracerConfigurationManager(NAMENODE_HTRACE_PREFIX, conf);
this.role = role;
String nsId = getNameServiceId(conf);
String namenodeId = HAUtil.getNameNodeId(conf, nsId);

34
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java
View File

@ -219,10 +219,6 @@
import org.apache.hadoop.tools.proto.GetUserMappingsProtocolProtos.GetUserMappingsProtocolService;
import org.apache.hadoop.tools.protocolPB.GetUserMappingsProtocolPB;
import org.apache.hadoop.tools.protocolPB.GetUserMappingsProtocolServerSideTranslatorPB;
import org.apache.hadoop.tracing.SpanReceiverInfo;
import org.apache.hadoop.tracing.TraceAdminPB.TraceAdminService;
import org.apache.hadoop.tracing.TraceAdminProtocolPB;
import org.apache.hadoop.tracing.TraceAdminProtocolServerSideTranslatorPB;
import org.apache.hadoop.util.VersionInfo;
import org.apache.hadoop.util.VersionUtil;
import org.slf4j.Logger;
@ -342,11 +338,6 @@ public NameNodeRpcServer(Configuration conf, NameNode nn)
BlockingService reconfigurationPbService = ReconfigurationProtocolService
.newReflectiveBlockingService(reconfigurationProtocolXlator);
TraceAdminProtocolServerSideTranslatorPB traceAdminXlator =
new TraceAdminProtocolServerSideTranslatorPB(this);
BlockingService traceAdminService = TraceAdminService
.newReflectiveBlockingService(traceAdminXlator);
InetSocketAddress serviceRpcAddr = nn.getServiceRpcServerAddress(conf);
if (serviceRpcAddr != null) {
String bindHost = nn.getServiceRpcServerBindHost(conf);
@ -390,8 +381,6 @@ public NameNodeRpcServer(Configuration conf, NameNode nn)
genericRefreshService, serviceRpcServer);
DFSUtil.addPBProtocol(conf, GetUserMappingsProtocolPB.class,
getUserMappingService, serviceRpcServer);
DFSUtil.addPBProtocol(conf, TraceAdminProtocolPB.class,
traceAdminService, serviceRpcServer);
// Update the address with the correct port
InetSocketAddress listenAddr = serviceRpcServer.getListenerAddress();
@ -494,8 +483,6 @@ public NameNodeRpcServer(Configuration conf, NameNode nn)
genericRefreshService, clientRpcServer);
DFSUtil.addPBProtocol(conf, GetUserMappingsProtocolPB.class,
getUserMappingService, clientRpcServer);
DFSUtil.addPBProtocol(conf, TraceAdminProtocolPB.class,
traceAdminService, clientRpcServer);
// set service-level authorization security policy
if (serviceAuthEnabled =
@ -2474,27 +2461,6 @@ private EventBatchList getEventBatchList(long syncTxid, long txid,
return new EventBatchList(batches, firstSeenTxid, maxSeenTxid, syncTxid);
}
@Override // TraceAdminProtocol
public SpanReceiverInfo[] listSpanReceivers() throws IOException {
checkNNStartup();
namesystem.checkSuperuserPrivilege();
return nn.tracerConfigurationManager.listSpanReceivers();
}
@Override // TraceAdminProtocol
public long addSpanReceiver(SpanReceiverInfo info) throws IOException {
checkNNStartup();
namesystem.checkSuperuserPrivilege();
return nn.tracerConfigurationManager.addSpanReceiver(info);
}
@Override // TraceAdminProtocol
public void removeSpanReceiver(long id) throws IOException {
checkNNStartup();
namesystem.checkSuperuserPrivilege();
nn.tracerConfigurationManager.removeSpanReceiver(id);
}
@Override // ClientProtocol
public ErasureCodingPolicyInfo[] getErasureCodingPolicies()
throws IOException {

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NamenodeFsck.java
View File

@ -87,7 +87,7 @@
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.tracing.TraceUtils;
import org.apache.hadoop.util.Time;
import org.apache.htrace.core.Tracer;
import org.apache.hadoop.tracing.Tracer;
import org.apache.hadoop.thirdparty.com.google.common.annotations.VisibleForTesting;

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/NamenodeProtocols.java
View File

@ -27,7 +27,6 @@
import org.apache.hadoop.ipc.RefreshCallQueueProtocol;
import org.apache.hadoop.ipc.GenericRefreshProtocol;
import org.apache.hadoop.tools.GetUserMappingsProtocol;
import org.apache.hadoop.tracing.TraceAdminProtocol;
/** The full set of RPC methods implemented by the Namenode. */
@InterfaceAudience.Private
@ -42,6 +41,5 @@ public interface NamenodeProtocols
RefreshCallQueueProtocol,
GenericRefreshProtocol,
GetUserMappingsProtocol,
HAServiceProtocol,
TraceAdminProtocol {
HAServiceProtocol {
}

2
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSOutputStream.java
View File

@ -57,7 +57,6 @@
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.test.PathUtils;
import org.apache.hadoop.test.Whitebox;
import org.apache.htrace.core.SpanId;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;
@ -296,7 +295,6 @@ public void testCongestionBackoff() throws IOException {
Whitebox.getInternalState(stream, "congestedNodes");
congestedNodes.add(mock(DatanodeInfo.class));
DFSPacket packet = mock(DFSPacket.class);
when(packet.getTraceParents()).thenReturn(new SpanId[] {});
dataQueue.add(packet);
stream.run();
Assert.assertTrue(congestedNodes.isEmpty());

180
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tracing/TestTraceAdmin.java
View File

@ -1,180 +0,0 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.protocol.datatransfer.sasl.SaslDataTransferTestCase;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.net.unix.TemporarySocketDirectory;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.htrace.core.Tracer;
import org.junit.Assert;
import org.junit.Test;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.PrintStream;
import java.security.PrivilegedExceptionAction;
import java.util.ArrayList;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertEquals;
/**
* Test cases for TraceAdmin.
*/
public class TestTraceAdmin extends SaslDataTransferTestCase {
private static final String NEWLINE = System.getProperty("line.separator");
private final static int ONE_DATANODE = 1;
private String runTraceCommand(TraceAdmin trace, String... cmd)
throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PrintStream ps = new PrintStream(baos);
PrintStream oldStdout = System.out;
PrintStream oldStderr = System.err;
System.setOut(ps);
System.setErr(ps);
int ret = -1;
try {
ret = trace.run(cmd);
} finally {
try {
System.out.flush();
} finally {
System.setOut(oldStdout);
System.setErr(oldStderr);
}
}
return "ret:" + ret + ", " + baos.toString();
}
private String getHostPortForNN(MiniDFSCluster cluster) {
return "127.0.0.1:" + cluster.getNameNodePort();
}
private String getHostPortForDN(MiniDFSCluster cluster, int index) {
ArrayList<DataNode> dns = cluster.getDataNodes();
assertTrue(index >= 0 && index < dns.size());
return "127.0.0.1:" + dns.get(index).getIpcPort();
}
@Test
public void testNoOperator() throws Exception {
TraceAdmin trace = new TraceAdmin();
trace.setConf(new Configuration());
Assert.assertEquals("ret:1, You must specify an operation." + NEWLINE,
runTraceCommand(trace, "-host", "127.0.0.1:12346"));
}
@Test
public void testCreateAndDestroySpanReceiver() throws Exception {
Configuration conf = new Configuration();
conf = new Configuration();
conf.set(TraceUtils.DEFAULT_HADOOP_TRACE_PREFIX +
Tracer.SPAN_RECEIVER_CLASSES_KEY, "");
MiniDFSCluster cluster =
new MiniDFSCluster.Builder(conf).numDataNodes(3).build();
cluster.waitActive();
TemporarySocketDirectory tempDir = new TemporarySocketDirectory();
String tracePath =
new File(tempDir.getDir(), "tracefile").getAbsolutePath();
try {
TraceAdmin trace = new TraceAdmin();
trace.setConf(conf);
Assert.assertEquals("ret:0, [no span receivers found]" + NEWLINE,
runTraceCommand(trace, "-list", "-host", getHostPortForNN(cluster)));
Assert.assertEquals("ret:0, Added trace span receiver 1 with " +
"configuration hadoop.htrace.local.file.span.receiver.path = " + tracePath + NEWLINE,
runTraceCommand(trace, "-add", "-host", getHostPortForNN(cluster),
"-class", "org.apache.htrace.core.LocalFileSpanReceiver",
"-Chadoop.htrace.local.file.span.receiver.path=" + tracePath));
String list =
runTraceCommand(trace, "-list", "-host", getHostPortForNN(cluster));
Assert.assertTrue(list.startsWith("ret:0"));
Assert.assertTrue(list.contains("1 org.apache.htrace.core.LocalFileSpanReceiver"));
Assert.assertEquals("ret:0, Removed trace span receiver 1" + NEWLINE,
runTraceCommand(trace, "-remove", "1", "-host",
getHostPortForNN(cluster)));
Assert.assertEquals("ret:0, [no span receivers found]" + NEWLINE,
runTraceCommand(trace, "-list", "-host", getHostPortForNN(cluster)));
Assert.assertEquals("ret:0, Added trace span receiver 2 with " +
"configuration hadoop.htrace.local.file.span.receiver.path = " + tracePath + NEWLINE,
runTraceCommand(trace, "-add", "-host", getHostPortForNN(cluster),
"-class", "LocalFileSpanReceiver",
"-Chadoop.htrace.local.file.span.receiver.path=" + tracePath));
Assert.assertEquals("ret:0, Removed trace span receiver 2" + NEWLINE,
runTraceCommand(trace, "-remove", "2", "-host",
getHostPortForNN(cluster)));
} finally {
cluster.shutdown();
tempDir.close();
}
}
/**
* Test running hadoop trace commands with -principal option against
* Kerberized NN and DN.
*
* @throws Exception
*/
@Test
public void testKerberizedTraceAdmin() throws Exception {
MiniDFSCluster cluster = null;
final HdfsConfiguration conf = createSecureConfig(
"authentication,privacy");
try {
cluster = new MiniDFSCluster.Builder(conf)
.numDataNodes(ONE_DATANODE)
.build();
cluster.waitActive();
final String nnHost = getHostPortForNN(cluster);
final String dnHost = getHostPortForDN(cluster, 0);
// login using keytab and run commands
UserGroupInformation
.loginUserFromKeytabAndReturnUGI(getHdfsPrincipal(), getHdfsKeytab())
.doAs(new PrivilegedExceptionAction<Void>() {
@Override
public Void run() throws Exception {
// send trace command to NN
TraceAdmin trace = new TraceAdmin();
trace.setConf(conf);
final String[] nnTraceCmd = new String[] {
"-list", "-host", nnHost, "-principal",
conf.get(DFSConfigKeys.DFS_NAMENODE_KERBEROS_PRINCIPAL_KEY)};
int ret = trace.run(nnTraceCmd);
assertEquals(0, ret);
// send trace command to DN
final String[] dnTraceCmd = new String[] {
"-list", "-host", dnHost, "-principal",
conf.get(DFSConfigKeys.DFS_DATANODE_KERBEROS_PRINCIPAL_KEY)};
ret = trace.run(dnTraceCmd);
assertEquals(0, ret);
return null;
}
});
} finally {
if (cluster != null) {
cluster.shutdown();
}
}
}
}

223
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tracing/TestTracing.java
View File

@ -1,223 +0,0 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.Map;
import org.apache.commons.lang3.RandomStringUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.CommonConfigurationKeys;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FsTracer;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.htrace.core.Span;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class TestTracing {
private static MiniDFSCluster cluster;
private static DistributedFileSystem dfs;
private final static Configuration TRACING_CONF;
private final static Configuration NO_TRACING_CONF;
static {
NO_TRACING_CONF = new Configuration();
NO_TRACING_CONF.setLong("dfs.blocksize", 100 * 1024);
TRACING_CONF = new Configuration(NO_TRACING_CONF);
TRACING_CONF.set(CommonConfigurationKeys.FS_CLIENT_HTRACE_PREFIX +
Tracer.SPAN_RECEIVER_CLASSES_KEY,
SetSpanReceiver.class.getName());
TRACING_CONF.set(CommonConfigurationKeys.FS_CLIENT_HTRACE_PREFIX +
Tracer.SAMPLER_CLASSES_KEY, "AlwaysSampler");
}
@Test
public void testTracing() throws Exception {
// write and read without tracing started
String fileName = "testTracingDisabled.dat";
writeTestFile(fileName);
Assert.assertEquals(0, SetSpanReceiver.size());
readTestFile(fileName);
Assert.assertEquals(0, SetSpanReceiver.size());
writeTestFile("testReadTraceHooks.dat");
FsTracer.clear();
Tracer tracer = FsTracer.get(TRACING_CONF);
writeWithTracing(tracer);
readWithTracing(tracer);
}
private void writeWithTracing(Tracer tracer) throws Exception {
long startTime = System.currentTimeMillis();
TraceScope ts = tracer.newScope("testWriteTraceHooks");
writeTestFile("testWriteTraceHooks.dat");
long endTime = System.currentTimeMillis();
ts.close();
String[] expectedSpanNames = new String[]{
"testWriteTraceHooks",
"ClientProtocol#create",
"ClientNamenodeProtocol#create",
"ClientProtocol#fsync",
"ClientNamenodeProtocol#fsync",
"ClientProtocol#complete",
"ClientNamenodeProtocol#complete",
"newStreamForCreate",
"DFSOutputStream#write",
"DFSOutputStream#close",
"dataStreamer",
"OpWriteBlockProto",
"ClientProtocol#addBlock",
"ClientNamenodeProtocol#addBlock"
};
SetSpanReceiver.assertSpanNamesFound(expectedSpanNames);
// The trace should last about the same amount of time as the test
Map<String, List<Span>> map = SetSpanReceiver.getMap();
Span s = map.get("testWriteTraceHooks").get(0);
Assert.assertNotNull(s);
// Spans homed in the top trace shoud have same trace id.
// Spans having multiple parents (e.g. "dataStreamer" added by HDFS-7054)
// and children of them are exception.
String[] spansInTopTrace = new String[]{
"testWriteTraceHooks",
"ClientProtocol#create",
"ClientNamenodeProtocol#create",
"ClientProtocol#fsync",
"ClientNamenodeProtocol#fsync",
"ClientProtocol#complete",
"ClientNamenodeProtocol#complete",
"newStreamForCreate",
"DFSOutputStream#write",
"DFSOutputStream#close",
};
for (String desc : spansInTopTrace) {
for (Span span : map.get(desc)) {
Assert.assertEquals(ts.getSpan().getSpanId().getHigh(),
span.getSpanId().getHigh());
}
}
// test for timeline annotation added by HADOOP-11242
Assert.assertEquals("called",
map.get("ClientProtocol#create")
.get(0).getTimelineAnnotations()
.get(0).getMessage());
SetSpanReceiver.clear();
}
private void readWithTracing(Tracer tracer) throws Exception {
long startTime = System.currentTimeMillis();
TraceScope ts = tracer.newScope("testReadTraceHooks");
readTestFile("testReadTraceHooks.dat");
ts.close();
long endTime = System.currentTimeMillis();
String[] expectedSpanNames = new String[]{
"testReadTraceHooks",
"ClientProtocol#getBlockLocations",
"ClientNamenodeProtocol#getBlockLocations",
"OpReadBlockProto"
};
SetSpanReceiver.assertSpanNamesFound(expectedSpanNames);
// The trace should last about the same amount of time as the test
Map<String, List<Span>> map = SetSpanReceiver.getMap();
Span s = map.get("testReadTraceHooks").get(0);
Assert.assertNotNull(s);
long spanStart = s.getStartTimeMillis();
long spanEnd = s.getStopTimeMillis();
Assert.assertTrue(spanStart - startTime < 100);
Assert.assertTrue(spanEnd - endTime < 100);
// There should only be one trace id as it should all be homed in the
// top trace.
for (Span span : SetSpanReceiver.getSpans()) {
System.out.println(span.toJson());
}
for (Span span : SetSpanReceiver.getSpans()) {
Assert.assertEquals(ts.getSpan().getSpanId().getHigh(),
span.getSpanId().getHigh());
}
SetSpanReceiver.clear();
}
private void writeTestFile(String testFileName) throws Exception {
Path filePath = new Path(testFileName);
FSDataOutputStream stream = dfs.create(filePath);
for (int i = 0; i < 10; i++) {
byte[] data = RandomStringUtils.randomAlphabetic(102400).getBytes();
stream.write(data);
}
stream.hsync();
stream.close();
}
private void readTestFile(String testFileName) throws Exception {
Path filePath = new Path(testFileName);
FSDataInputStream istream = dfs.open(filePath, 10240);
ByteBuffer buf = ByteBuffer.allocate(10240);
int count = 0;
try {
while (istream.read(buf) > 0) {
count += 1;
buf.clear();
istream.seek(istream.getPos() + 5);
}
} catch (IOException ioe) {
// Ignore this it's probably a seek after eof.
} finally {
istream.close();
}
}
@Before
public void startCluster() throws IOException {
cluster = new MiniDFSCluster.Builder(NO_TRACING_CONF)
.numDataNodes(3)
.build();
cluster.waitActive();
dfs = cluster.getFileSystem();
SetSpanReceiver.clear();
}
@After
public void shutDown() {
if (cluster != null) {
cluster.shutdown();
cluster = null;
}
FsTracer.clear();
}
}

108
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tracing/TestTracingShortCircuitLocalRead.java
View File

@ -1,108 +0,0 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.tracing;
import static org.apache.hadoop.test.PlatformAssumptions.assumeNotWindows;
import static org.junit.Assume.assumeTrue;
import java.io.File;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FsTracer;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.net.unix.DomainSocket;
import org.apache.hadoop.net.unix.TemporarySocketDirectory;
import org.apache.hadoop.util.NativeCodeLoader;
import org.apache.htrace.core.TraceScope;
import org.apache.htrace.core.Tracer;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
public class TestTracingShortCircuitLocalRead {
private static Configuration conf;
private static MiniDFSCluster cluster;
private static DistributedFileSystem dfs;
private static TemporarySocketDirectory sockDir;
static final Path TEST_PATH = new Path("testShortCircuitTraceHooks");
static final int TEST_LENGTH = 1234;
@BeforeClass
public static void init() {
sockDir = new TemporarySocketDirectory();
DomainSocket.disableBindPathValidation();
}
@AfterClass
public static void shutdown() throws IOException {
sockDir.close();
}
@Test
public void testShortCircuitTraceHooks() throws IOException {
assumeTrue(NativeCodeLoader.isNativeCodeLoaded());
assumeNotWindows();
conf = new Configuration();
conf.set(TraceUtils.DEFAULT_HADOOP_TRACE_PREFIX +
Tracer.SPAN_RECEIVER_CLASSES_KEY,
SetSpanReceiver.class.getName());
conf.set(TraceUtils.DEFAULT_HADOOP_TRACE_PREFIX +
Tracer.SAMPLER_CLASSES_KEY,
"AlwaysSampler");
conf.setLong("dfs.blocksize", 100 * 1024);
conf.setBoolean(HdfsClientConfigKeys.Read.ShortCircuit.KEY, true);
conf.setBoolean(HdfsClientConfigKeys.Read.ShortCircuit.SKIP_CHECKSUM_KEY, false);
conf.set(DFSConfigKeys.DFS_DOMAIN_SOCKET_PATH_KEY,
new File(sockDir.getDir(),
"testShortCircuitTraceHooks._PORT.sock").getAbsolutePath());
conf.set(DFSConfigKeys.DFS_CHECKSUM_TYPE_KEY, "CRC32C");
cluster = new MiniDFSCluster.Builder(conf)
.numDataNodes(1)
.build();
dfs = cluster.getFileSystem();
try {
DFSTestUtil.createFile(dfs, TEST_PATH, TEST_LENGTH, (short)1, 5678L);
TraceScope ts = FsTracer.get(conf).
newScope("testShortCircuitTraceHooks");
FSDataInputStream stream = dfs.open(TEST_PATH);
byte buf[] = new byte[TEST_LENGTH];
IOUtils.readFully(stream, buf, 0, TEST_LENGTH);
stream.close();
ts.close();
String[] expectedSpanNames = {
"OpRequestShortCircuitAccessProto",
"ShortCircuitShmRequestProto"
};
SetSpanReceiver.assertSpanNamesFound(expectedSpanNames);
} finally {
dfs.close();
cluster.shutdown();
}
}
}

12
hadoop-project/pom.xml
View File

@ -138,8 +138,6 @@
<jna.version>5.2.0</jna.version>
<grizzly.version>2.2.21</grizzly.version>
<gson.version>2.2.4</gson.version>
<htrace3.version>3.1.0-incubating</htrace3.version>
<htrace4.version>4.1.0-incubating</htrace4.version>
<metrics.version>3.2.4</metrics.version>
<netty3.version>3.10.6.Final</netty3.version>
<netty4.version>4.1.50.Final</netty4.version>
@ -1255,16 +1253,6 @@
<artifactId>jsch</artifactId>
<version>0.1.55</version>
</dependency>
<dependency>
<groupId>org.apache.htrace</groupId>
<artifactId>htrace-core</artifactId>
<version>${htrace3.version}</version>
</dependency>
<dependency>
<groupId>org.apache.htrace</groupId>
<artifactId>htrace-core4</artifactId>
<version>${htrace4.version}</version>
</dependency>
<dependency>
<groupId>org.jdom</groupId>
<artifactId>jdom</artifactId>