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HDDS-249. Fail if multiple SCM IDs on the DataNode and add SCM ID check after version request. Contributed by Bharat Viswanadham.

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This commit is contained in:
Nanda kumar 2018-07-21 18:46:31 +05:30
parent 993ec026d1
commit 9fa9e301b0
7 changed files with 177 additions and 20 deletions
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27
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/states/endpoint/VersionEndpointTask.java
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@ -23,10 +23,14 @@
import org.apache.hadoop.ozone.OzoneConsts;
import org.apache.hadoop.ozone.container.common.statemachine
.EndpointStateMachine;
import org.apache.hadoop.ozone.container.common.utils.HddsVolumeUtil;
import org.apache.hadoop.ozone.container.common.volume.HddsVolume;
import org.apache.hadoop.ozone.container.common.volume.VolumeSet;
import org.apache.hadoop.ozone.container.ozoneimpl.OzoneContainer;
import org.apache.hadoop.ozone.protocol.VersionResponse;
import org.apache.hadoop.util.DiskChecker.DiskOutOfSpaceException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.Map;
@ -37,6 +41,8 @@
*/
public class VersionEndpointTask implements
Callable<EndpointStateMachine.EndPointStates> {
public static final Logger LOG = LoggerFactory.getLogger(VersionEndpointTask
.class);
private final EndpointStateMachine rpcEndPoint;
private final Configuration configuration;
private final OzoneContainer ozoneContainer;
@ -71,21 +77,32 @@ public EndpointStateMachine.EndPointStates call() throws Exception {
Preconditions.checkNotNull(scmId, "Reply from SCM: scmId cannot be " +
"null");
Preconditions.checkNotNull(scmId, "Reply from SCM: clusterId cannot be" +
" null");
Preconditions.checkNotNull(clusterId, "Reply from SCM: clusterId " +
"cannot be null");
// If version file does not exist create version file and also set scmId
for (Map.Entry<String, HddsVolume> entry : volumeMap.entrySet()) {
HddsVolume hddsVolume = entry.getValue();
hddsVolume.format(clusterId);
ozoneContainer.getDispatcher().setScmId(scmId);
boolean result = HddsVolumeUtil.checkVolume(hddsVolume, scmId,
clusterId, LOG);
if (!result) {
volumeSet.failVolume(hddsVolume.getHddsRootDir().getPath());
}
}
if (volumeSet.getVolumesList().size() == 0) {
// All volumes are inconsistent state
throw new DiskOutOfSpaceException("All configured Volumes are in " +
"Inconsistent State");
}
ozoneContainer.getDispatcher().setScmId(scmId);
EndpointStateMachine.EndPointStates nextState =
rpcEndPoint.getState().getNextState();
rpcEndPoint.setState(nextState);
rpcEndPoint.zeroMissedCount();
} catch (IOException ex) {
} catch (DiskOutOfSpaceException ex) {
rpcEndPoint.setState(EndpointStateMachine.EndPointStates.SHUTDOWN);
} catch(IOException ex) {
rpcEndPoint.logIfNeeded(ex);
} finally {
rpcEndPoint.unlock();

56
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/utils/HddsVolumeUtil.java
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@ -25,8 +25,10 @@
import org.apache.hadoop.ozone.container.common.DataNodeLayoutVersion;
import org.apache.hadoop.ozone.container.common.volume.HddsVolume;
import org.apache.hadoop.util.Time;
import org.slf4j.Logger;
import java.io.File;
import java.io.IOException;
import java.util.Properties;
import java.util.UUID;
@ -160,4 +162,58 @@ private static String getProperty(Properties props, String propName, File
}
return value;
}
/**
* Check Volume is consistent state or not.
* @param hddsVolume
* @param scmId
* @param clusterId
* @param logger
* @return true - if volume is in consistent state, otherwise false.
*/
public static boolean checkVolume(HddsVolume hddsVolume, String scmId, String
clusterId, Logger logger) {
File hddsRoot = hddsVolume.getHddsRootDir();
String volumeRoot = hddsRoot.getPath();
File scmDir = new File(hddsRoot, scmId);
try {
hddsVolume.format(clusterId);
} catch (IOException ex) {
logger.error("Error during formatting volume {}, exception is {}",
volumeRoot, ex);
return false;
}
File[] hddsFiles = hddsRoot.listFiles();
if(hddsFiles == null) {
// This is the case for IOException, where listFiles returns null.
// So, we fail the volume.
return false;
} else if (hddsFiles.length == 1) {
// DN started for first time or this is a newly added volume.
// So we create scm directory.
if (!scmDir.mkdir()) {
logger.error("Unable to create scmDir {}", scmDir);
return false;
}
return true;
} else if(hddsFiles.length == 2) {
// The files should be Version and SCM directory
if (scmDir.exists()) {
return true;
} else {
logger.error("Volume {} is in Inconsistent state, expected scm " +
"directory {} does not exist", volumeRoot, scmDir
.getAbsolutePath());
return false;
}
} else {
// The hdds root dir should always have 2 files. One is Version file
// and other is SCM directory.
return false;
}
}
}

22
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/ozoneimpl/ContainerReader.java
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@ -25,6 +25,7 @@
import org.apache.hadoop.ozone.container.common.impl.ContainerData;
import org.apache.hadoop.ozone.container.common.impl.ContainerSet;
import org.apache.hadoop.ozone.container.common.volume.HddsVolume;
import org.apache.hadoop.ozone.container.common.volume.VolumeSet;
import org.apache.hadoop.ozone.container.keyvalue.KeyValueContainer;
import org.apache.hadoop.ozone.container.keyvalue.KeyValueContainerData;
import org.apache.hadoop.ozone.container.common.impl.ContainerDataYaml;
@ -64,14 +65,16 @@ public class ContainerReader implements Runnable {
private final ContainerSet containerSet;
private final OzoneConfiguration config;
private final File hddsVolumeDir;
private final VolumeSet volumeSet;
ContainerReader(HddsVolume volume, ContainerSet cset, OzoneConfiguration
conf) {
ContainerReader(VolumeSet volSet, HddsVolume volume, ContainerSet cset,
OzoneConfiguration conf) {
Preconditions.checkNotNull(volume);
this.hddsVolume = volume;
this.hddsVolumeDir = hddsVolume.getHddsRootDir();
this.containerSet = cset;
this.config = conf;
this.volumeSet = volSet;
}
@Override
@ -97,10 +100,18 @@ public boolean accept(File pathname) {
});
if (scmDir == null) {
LOG.error("Volume {} is empty with out metadata and chunks",
LOG.error("IO error for the volume {}, skipped loading",
hddsVolumeRootDir);
volumeSet.failVolume(hddsVolumeRootDir.getPath());
return;
}
if (scmDir.length > 1) {
LOG.error("Volume {} is in Inconsistent state", hddsVolumeRootDir);
volumeSet.failVolume(hddsVolumeRootDir.getPath());
return;
}
for (File scmLoc : scmDir) {
File currentDir = null;
currentDir = new File(scmLoc, Storage.STORAGE_DIR_CURRENT);
@ -123,9 +134,8 @@ public boolean accept(File pathname) {
verifyContainerFile(containerName, containerFile,
checksumFile);
} else {
LOG.error(
"Missing container metadata files for Container: " +
"{}", containerName);
LOG.error("Missing container metadata files for " +
"Container: {}", containerName);
}
} else {
LOG.error("Missing container metadata directory for " +

2
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/ozoneimpl/OzoneContainer.java
View File

@ -106,7 +106,7 @@ public void buildContainerSet() {
while (volumeSetIterator.hasNext()) {
HddsVolume volume = volumeSetIterator.next();
File hddsVolumeRootDir = volume.getHddsRootDir();
Thread thread = new Thread(new ContainerReader(volume,
Thread thread = new Thread(new ContainerReader(volumeSet, volume,
containerSet, config));
thread.start();
volumeThreads.add(thread);

27
hadoop-hdds/container-service/src/test/java/org/apache/hadoop/ozone/container/common/ScmTestMock.java
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@ -56,6 +56,13 @@ public class ScmTestMock implements StorageContainerDatanodeProtocol {
private AtomicInteger heartbeatCount = new AtomicInteger(0);
private AtomicInteger rpcCount = new AtomicInteger(0);
private AtomicInteger containerReportsCount = new AtomicInteger(0);
private String clusterId;
private String scmId;
public ScmTestMock() {
clusterId = UUID.randomUUID().toString();
scmId = UUID.randomUUID().toString();
}
// Map of datanode to containers
private Map<DatanodeDetails, Map<String, ContainerInfo>> nodeContainers =
@ -157,8 +164,8 @@ public long getBytesUsed() {
return VersionResponse.newBuilder()
.setVersion(versionInfo.getVersion())
.addValue(VersionInfo.DESCRIPTION_KEY, versionInfo.getDescription())
.addValue(OzoneConsts.SCM_ID, UUID.randomUUID().toString())
.addValue(OzoneConsts.CLUSTER_ID, UUID.randomUUID().toString())
.addValue(OzoneConsts.SCM_ID, scmId)
.addValue(OzoneConsts.CLUSTER_ID, clusterId)
.build().getProtobufMessage();
}
@ -329,4 +336,20 @@ public void clearScmCommandRequests() {
public void addScmCommandRequest(SCMCommandProto scmCmd) {
scmCommandRequests.add(scmCmd);
}
/**
* Set scmId.
* @param id
*/
public void setScmId(String id) {
this.scmId = id;
}
/**
* Set scmId.
* @return scmId
*/
public String getScmId() {
return scmId;
}
}

14
hadoop-hdds/container-service/src/test/java/org/apache/hadoop/ozone/container/common/TestDatanodeStateMachine.java
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@ -19,6 +19,7 @@
import com.google.common.collect.Maps;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.hdds.scm.ScmConfigKeys;
import org.apache.hadoop.hdds.protocol.DatanodeDetails;
import org.apache.hadoop.ipc.RPC;
@ -57,9 +58,9 @@
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import static org.apache.hadoop.hdds.scm.ScmConfigKeys.HDDS_DATANODE_DIR_KEY;
import static org.apache.hadoop.hdds.scm.ScmConfigKeys
.OZONE_SCM_HEARTBEAT_RPC_TIMEOUT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DATA_DIR_KEY;
import static org.junit.Assert.assertTrue;
/**
@ -68,7 +69,9 @@
public class TestDatanodeStateMachine {
private static final Logger LOG =
LoggerFactory.getLogger(TestDatanodeStateMachine.class);
private final int scmServerCount = 3;
// Changing it to 1, as current code checks for multiple scm directories,
// and fail if exists
private final int scmServerCount = 1;
private List<String> serverAddresses;
private List<RPC.Server> scmServers;
private List<ScmTestMock> mockServers;
@ -90,7 +93,6 @@ public void setUp() throws Exception {
String address = "127.0.0.1";
serverAddresses.add(address + ":" + port);
ScmTestMock mock = new ScmTestMock();
scmServers.add(SCMTestUtils.startScmRpcServer(conf, mock,
new InetSocketAddress(address, port), 10));
mockServers.add(mock);
@ -107,7 +109,7 @@ public void setUp() throws Exception {
}
File dataDir = new File(testRoot, "data");
conf.set(DFS_DATANODE_DATA_DIR_KEY, dataDir.getAbsolutePath());
conf.set(HDDS_DATANODE_DIR_KEY, dataDir.getAbsolutePath());
if (!dataDir.mkdirs()) {
LOG.info("Data dir create failed.");
}
@ -145,7 +147,7 @@ public void tearDown() throws Exception {
} catch (Exception e) {
//ignore all execption from the shutdown
} finally {
testRoot.delete();
FileUtil.fullyDelete(testRoot);
}
}
@ -162,7 +164,7 @@ public void testStartStopDatanodeStateMachine() throws IOException,
stateMachine.startDaemon();
SCMConnectionManager connectionManager =
stateMachine.getConnectionManager();
GenericTestUtils.waitFor(() -> connectionManager.getValues().size() == 3,
GenericTestUtils.waitFor(() -> connectionManager.getValues().size() == 1,
1000, 30000);
stateMachine.stopDaemon();

49
hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/ozone/container/common/TestEndPoint.java
View File

@ -70,8 +70,10 @@
.RegisterEndpointTask;
import org.apache.hadoop.ozone.container.common.states.endpoint
.VersionEndpointTask;
import org.apache.hadoop.ozone.container.common.volume.HddsVolume;
import org.apache.hadoop.ozone.container.ozoneimpl.OzoneContainer;
import org.apache.hadoop.ozone.protocol.commands.CommandStatus;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.test.PathUtils;
import org.apache.hadoop.util.Time;
import org.junit.AfterClass;
@ -174,6 +176,53 @@ public void testGetVersionTask() throws Exception {
}
}
@Test
public void testCheckVersionResponse() throws Exception {
OzoneConfiguration conf = SCMTestUtils.getConf();
try (EndpointStateMachine rpcEndPoint = createEndpoint(conf,
serverAddress, 1000)) {
GenericTestUtils.LogCapturer logCapturer = GenericTestUtils.LogCapturer
.captureLogs(VersionEndpointTask.LOG);
OzoneContainer ozoneContainer = new OzoneContainer(getDatanodeDetails(),
conf);
rpcEndPoint.setState(EndpointStateMachine.EndPointStates.GETVERSION);
VersionEndpointTask versionTask = new VersionEndpointTask(rpcEndPoint,
conf, ozoneContainer);
EndpointStateMachine.EndPointStates newState = versionTask.call();
// if version call worked the endpoint should automatically move to the
// next state.
Assert.assertEquals(EndpointStateMachine.EndPointStates.REGISTER,
newState);
// Now rpcEndpoint should remember the version it got from SCM
Assert.assertNotNull(rpcEndPoint.getVersion());
// Now change server scmId, so datanode scmId will be
// different from SCM server response scmId
String newScmId = UUID.randomUUID().toString();
scmServerImpl.setScmId(newScmId);
newState = versionTask.call();
Assert.assertEquals(EndpointStateMachine.EndPointStates.SHUTDOWN,
newState);
List<HddsVolume> volumesList = ozoneContainer.getVolumeSet()
.getFailedVolumesList();
Assert.assertTrue(volumesList.size() == 1);
File expectedScmDir = new File(volumesList.get(0).getHddsRootDir(),
scmServerImpl.getScmId());
Assert.assertTrue(logCapturer.getOutput().contains("expected scm " +
"directory " + expectedScmDir.getAbsolutePath() + " does not " +
"exist"));
Assert.assertTrue(ozoneContainer.getVolumeSet().getVolumesList().size()
== 0);
Assert.assertTrue(ozoneContainer.getVolumeSet().getFailedVolumesList()
.size() == 1);
}
}
@Test
/**
* This test makes a call to end point where there is no SCM server. We