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YARN-1071. Enabled ResourceManager to recover cluster metrics numDecommissionedNMs after restarting. Contributed by Jian He.

Browse Source 
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1570469 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Zhijie Shen 2014-02-21 06:46:24 +00:00
parent 4f8a487fcd
commit da20095284
7 changed files with 100 additions and 5 deletions
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3
hadoop-yarn-project/CHANGES.txt
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@ -324,6 +324,9 @@ Release 2.4.0 - UNRELEASED
YARN-1398. Fixed a deadlock in ResourceManager between users requesting
queue-acls and completing containers. (vinodkv)
YARN-1071. Enabled ResourceManager to recover cluster metrics
numDecommissionedNMs after restarting. (Jian He via zjshen)
Release 2.3.1 - UNRELEASED
INCOMPATIBLE CHANGES

6
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ClusterMetrics.java
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@ -91,7 +91,11 @@ public int getNumDecommisionedNMs() {
public void incrDecommisionedNMs() {
numDecommissionedNMs.incr();
}
public void setDecommisionedNMs(int num) {
numDecommissionedNMs.set(num);
}
public void decrDecommisionedNMs() {
numDecommissionedNMs.decr();
}

8
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/NodesListManager.java
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@ -75,6 +75,7 @@ protected void serviceInit(Configuration conf) throws Exception {
YarnConfiguration.DEFAULT_RM_NODES_EXCLUDE_FILE_PATH);
this.hostsReader =
createHostsFileReader(this.includesFile, this.excludesFile);
setDecomissionedNMsMetrics();
printConfiguredHosts();
} catch (YarnException ex) {
disableHostsFileReader(ex);
@ -120,10 +121,16 @@ public void refreshNodes(Configuration yarnConf) throws IOException,
this.conf, includesFile), excludesFile.isEmpty() ? null
: this.rmContext.getConfigurationProvider()
.getConfigurationInputStream(this.conf, excludesFile));
setDecomissionedNMsMetrics();
printConfiguredHosts();
}
}
private void setDecomissionedNMsMetrics() {
Set<String> excludeList = hostsReader.getExcludedHosts();
ClusterMetrics.getMetrics().setDecommisionedNMs(excludeList.size());
}
public boolean isValidNode(String hostName) {
synchronized (hostsReader) {
Set<String> hostsList = hostsReader.getHosts();
@ -190,6 +197,7 @@ private void disableHostsFileReader(Exception ex) {
conf.get(YarnConfiguration.DEFAULT_RM_NODES_EXCLUDE_FILE_PATH);
this.hostsReader =
createHostsFileReader(this.includesFile, this.excludesFile);
setDecomissionedNMsMetrics();
} catch (IOException ioe2) {
// Should *never* happen
this.hostsReader = null;

16
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmnode/RMNodeImpl.java
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@ -34,6 +34,7 @@
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.net.Node;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.yarn.api.records.ApplicationId;
@ -424,9 +425,22 @@ private void updateMetricsForDeactivatedNode(NodeState initialState,
break;
}
// Decomissioned NMs equals to the nodes missing in include list (if
// include list not empty) or the nodes listed in excluded list.
// DecomissionedNMs as per exclude list is set upfront when the
// exclude list is read so that RM restart can also reflect the
// decomissionedNMs. Note that RM is still not able to know decomissionedNMs
// as per include list after it restarts as they are known when those nodes
// come for registration.
// DecomissionedNMs as per include list is incremented in this transition.
switch (finalState) {
case DECOMMISSIONED:
metrics.incrDecommisionedNMs();
Set<String> ecludedHosts =
context.getNodesListManager().getHostsReader().getExcludedHosts();
if (!ecludedHosts.contains(hostName)
&& !ecludedHosts.contains(NetUtils.normalizeHostName(hostName))) {
metrics.incrDecommisionedNMs();
}
break;
case LOST:
metrics.incrNumLostNMs();

5
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMNodeTransitions.java
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@ -30,6 +30,7 @@
import junit.framework.Assert;
import org.apache.hadoop.util.HostsFileReader;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ContainerId;
import org.apache.hadoop.yarn.api.records.ContainerStatus;
@ -102,6 +103,10 @@ public void setUp() throws Exception {
rmContext =
new RMContextImpl(rmDispatcher, null, null, null,
mock(DelegationTokenRenewer.class), null, null, null, null, null);
NodesListManager nodesListManager = mock(NodesListManager.class);
HostsFileReader reader = mock(HostsFileReader.class);
when(nodesListManager.getHostsReader()).thenReturn(reader);
((RMContextImpl) rmContext).setNodesListManager(nodesListManager);
scheduler = mock(YarnScheduler.class);
doAnswer(
new Answer<Void>() {

63
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMRestart.java
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@ -23,6 +23,8 @@
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.UnknownHostException;
@ -38,7 +40,9 @@
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
import org.apache.hadoop.io.DataOutputBuffer;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.security.Credentials;
import org.apache.hadoop.security.SaslRpcServer.AuthMethod;
import org.apache.hadoop.security.SecurityUtil;
@ -90,12 +94,16 @@
import org.apache.log4j.Level;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class TestRMRestart {
private final static File TEMP_DIR = new File(System.getProperty(
"test.build.data", "/tmp"), "decommision");
private File hostFile = new File(TEMP_DIR + File.separator + "hostFile.txt");
private YarnConfiguration conf;
// Fake rmAddr for token-renewal
@ -113,6 +121,11 @@ public void setup() throws UnknownHostException {
Assert.assertTrue(YarnConfiguration.DEFAULT_RM_AM_MAX_ATTEMPTS > 1);
}
@After
public void tearDown() {
TEMP_DIR.delete();
}
@SuppressWarnings("rawtypes")
@Test (timeout=180000)
public void testRMRestart() throws Exception {
@ -1666,6 +1679,56 @@ private void assertQueueMetrics(QueueMetrics qm, int appsSubmitted,
appsCompleted + appsCompletedCarryOn);
}
@Test
public void testDecomissionedNMsMetricsOnRMRestart() throws Exception {
YarnConfiguration conf = new YarnConfiguration();
conf.set(YarnConfiguration.RM_NODES_EXCLUDE_FILE_PATH,
hostFile.getAbsolutePath());
writeToHostsFile("");
MockRM rm1 = new MockRM(conf);
rm1.start();
rm1.registerNode("localhost:1234", 8000);
rm1.registerNode("host2:1234", 8000);
Assert
.assertEquals(0, ClusterMetrics.getMetrics().getNumDecommisionedNMs());
String ip = NetUtils.normalizeHostName("localhost");
// Add 2 hosts to exclude list.
writeToHostsFile("host2", ip);
// refresh nodes
rm1.getNodesListManager().refreshNodes(conf);
Assert
.assertEquals(2, ClusterMetrics.getMetrics().getNumDecommisionedNMs());
// restart RM.
MockRM rm2 = new MockRM(conf);
rm2.start();
Assert
.assertEquals(2, ClusterMetrics.getMetrics().getNumDecommisionedNMs());
rm1.stop();
rm2.stop();
}
private void writeToHostsFile(String... hosts) throws IOException {
if (!hostFile.exists()) {
TEMP_DIR.mkdirs();
hostFile.createNewFile();
}
FileOutputStream fStream = null;
try {
fStream = new FileOutputStream(hostFile);
for (int i = 0; i < hosts.length; i++) {
fStream.write(hosts[i].getBytes());
fStream.write(System.getProperty("line.separator").getBytes());
}
} finally {
if (fStream != null) {
IOUtils.closeStream(fStream);
fStream = null;
}
}
}
public class TestMemoryRMStateStore extends MemoryRMStateStore {
int count = 0;
public int updateApp = 0;

4
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestResourceTrackerService.java
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@ -150,7 +150,6 @@ public void testDecommissionWithExcludeHosts() throws Exception {
MockNM nm3 = rm.registerNode("localhost:4433", 1024);
int metricCount = ClusterMetrics.getMetrics().getNumDecommisionedNMs();
NodeHeartbeatResponse nodeHeartbeat = nm1.nodeHeartbeat(true);
Assert.assertTrue(NodeAction.NORMAL.equals(nodeHeartbeat.getNodeAction()));
nodeHeartbeat = nm2.nodeHeartbeat(true);
@ -161,18 +160,17 @@ public void testDecommissionWithExcludeHosts() throws Exception {
writeToHostsFile("host2", ip);
rm.getNodesListManager().refreshNodes(conf);
checkDecommissionedNMCount(rm, metricCount + 2);
nodeHeartbeat = nm1.nodeHeartbeat(true);
Assert.assertTrue(NodeAction.NORMAL.equals(nodeHeartbeat.getNodeAction()));
nodeHeartbeat = nm2.nodeHeartbeat(true);
Assert.assertTrue("The decommisioned metrics are not updated",
NodeAction.SHUTDOWN.equals(nodeHeartbeat.getNodeAction()));
checkDecommissionedNMCount(rm, ++metricCount);
nodeHeartbeat = nm3.nodeHeartbeat(true);
Assert.assertTrue("The decommisioned metrics are not updated",
NodeAction.SHUTDOWN.equals(nodeHeartbeat.getNodeAction()));
checkDecommissionedNMCount(rm, ++metricCount);
}
/**