MAPREDUCE-5795. Fixed MRAppMaster to record the correct job-state after it recovers from a commit during a previous attempt. Contributed by Xuan Gong.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1581180 13f79535-47bb-0310-9956-ffa450edef68
2014-03-25 02:00:39 +00:00 · 2014-03-25 02:00:39 +00:00 · 6015e95941
commit 6015e95941
parent c2ef7e239e
6 changed files with 127 additions and 12 deletions
--- a/hadoop-mapreduce-project/CHANGES.txt
+++ b/hadoop-mapreduce-project/CHANGES.txt
@ -263,6 +263,9 @@ Release 2.4.0 - UNRELEASED
    FadviseFileRegion::transferTo does not read disks efficiently.
    (Nikola Vujic via cnauroth)

+    MAPREDUCE-5795. Fixed MRAppMaster to record the correct job-state after it
+    recovers from a commit during a previous attempt. (Xuan Gong via vinodkv)
+
 Release 2.3.1 - UNRELEASED

  INCOMPATIBLE CHANGES
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/jobhistory/JobHistoryEventHandler.java
@ -31,6 +31,7 @@

 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FSDataOutputStream;
 import org.apache.hadoop.fs.FileAlreadyExistsException;
@ -49,6 +50,7 @@
 import org.apache.hadoop.mapreduce.v2.api.records.JobState;
 import org.apache.hadoop.mapreduce.v2.app.AppContext;
 import org.apache.hadoop.mapreduce.v2.app.job.Job;
+import org.apache.hadoop.mapreduce.v2.app.job.JobStateInternal;
 import org.apache.hadoop.mapreduce.v2.jobhistory.FileNameIndexUtils;
 import org.apache.hadoop.mapreduce.v2.jobhistory.JobHistoryUtils;
 import org.apache.hadoop.mapreduce.v2.jobhistory.JobIndexInfo;
@ -348,7 +350,9 @@ protected void serviceStop() throws Exception {
          JobUnsuccessfulCompletionEvent jucEvent =
            new JobUnsuccessfulCompletionEvent(TypeConverter.fromYarn(toClose),
                System.currentTimeMillis(), job.getCompletedMaps(),
-                job.getCompletedReduces(), JobState.KILLED.toString(),
+                job.getCompletedReduces(),
+                createJobStateForJobUnsuccessfulCompletionEvent(
+                    mi.getForcedJobStateOnShutDown()),
                job.getDiagnostics());
          JobHistoryEvent jfEvent = new JobHistoryEvent(toClose, jucEvent);
          //Bypass the queue mechanism which might wait. Call the method directly
@ -381,9 +385,10 @@ protected EventWriter createEventWriter(Path historyFilePath)
   * This should be the first call to history for a job
   * 
   * @param jobId the jobId.
+   * @param forcedJobStateOnShutDown
   * @throws IOException
   */
-  protected void setupEventWriter(JobId jobId)
+  protected void setupEventWriter(JobId jobId, String forcedJobStateOnShutDown)
      throws IOException {
    if (stagingDirPath == null) {
      LOG.error("Log Directory is null, returning");
@ -438,7 +443,7 @@ protected void setupEventWriter(JobId jobId)
    }

    MetaInfo fi = new MetaInfo(historyFile, logDirConfPath, writer,
-        user, jobName, jobId);
+        user, jobName, jobId, forcedJobStateOnShutDown);
    fi.getJobSummary().setJobId(jobId);
    fileMap.put(jobId, fi);
  }
@ -481,13 +486,17 @@ private boolean isJobCompletionEvent(HistoryEvent historyEvent) {
    return false;
  }

-  protected void handleEvent(JobHistoryEvent event) {
+  @Private
+  public void handleEvent(JobHistoryEvent event) {
    synchronized (lock) {

      // If this is JobSubmitted Event, setup the writer
      if (event.getHistoryEvent().getEventType() == EventType.AM_STARTED) {
        try {
-          setupEventWriter(event.getJobID());
+          AMStartedEvent amStartedEvent =
+              (AMStartedEvent) event.getHistoryEvent();
+          setupEventWriter(event.getJobID(),
+              amStartedEvent.getForcedJobStateOnShutDown());
        } catch (IOException ioe) {
          LOG.error("Error JobHistoryEventHandler in handleEvent: " + event,
              ioe);
@ -804,9 +813,10 @@ protected class MetaInfo {
    Timer flushTimer; 
    FlushTimerTask flushTimerTask;
    private boolean isTimerShutDown = false;
+    private String forcedJobStateOnShutDown;

    MetaInfo(Path historyFile, Path conf, EventWriter writer, String user,
-        String jobName, JobId jobId) {
+        String jobName, JobId jobId, String forcedJobStateOnShutDown) {
      this.historyFile = historyFile;
      this.confFile = conf;
      this.writer = writer;
@ -814,6 +824,7 @@ protected class MetaInfo {
          new JobIndexInfo(-1, -1, user, jobName, jobId, -1, -1, null);
      this.jobSummary = new JobSummary();
      this.flushTimer = new Timer("FlushTimer", true);
+      this.forcedJobStateOnShutDown = forcedJobStateOnShutDown;
    }

    Path getHistoryFile() {
@ -840,6 +851,10 @@ boolean isTimerShutDown() {
      return isTimerShutDown;
    }

+    String getForcedJobStateOnShutDown() {
+      return forcedJobStateOnShutDown;
+    }
+
    @Override
    public String toString() {
      return "Job MetaInfo for "+ jobSummary.getJobId()
@ -983,4 +998,20 @@ public void setForcejobCompletion(boolean forceJobCompletion) {
    LOG.info("JobHistoryEventHandler notified that forceJobCompletion is "
      + forceJobCompletion);
  }
+
+  private String createJobStateForJobUnsuccessfulCompletionEvent(
+      String forcedJobStateOnShutDown) {
+    if (forcedJobStateOnShutDown == null || forcedJobStateOnShutDown
+        .isEmpty()) {
+      return JobState.KILLED.toString();
+    } else if (forcedJobStateOnShutDown.equals(
+        JobStateInternal.ERROR.toString()) ||
+        forcedJobStateOnShutDown.equals(JobStateInternal.FAILED.toString())) {
+      return JobState.FAILED.toString();
+    } else if (forcedJobStateOnShutDown.equals(JobStateInternal.SUCCEEDED
+        .toString())) {
+      return JobState.SUCCEEDED.toString();
+    }
+    return JobState.KILLED.toString();
+  }
 }
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/MRAppMaster.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/MRAppMaster.java
@ -1026,14 +1026,13 @@ protected void serviceStart() throws Exception {
    AMInfo amInfo =
        MRBuilderUtils.newAMInfo(appAttemptID, startTime, containerID, nmHost,
            nmPort, nmHttpPort);
-    amInfos.add(amInfo);

    // /////////////////// Create the job itself.
    job = createJob(getConfig(), forcedState, shutDownMessage);

    // End of creating the job.

-    // Send out an MR AM inited event for this AM and all previous AMs.
+    // Send out an MR AM inited event for all previous AMs.
    for (AMInfo info : amInfos) {
      dispatcher.getEventHandler().handle(
          new JobHistoryEvent(job.getID(), new AMStartedEvent(info
@ -1042,6 +1041,15 @@ protected void serviceStart() throws Exception {
                  .getNodeManagerHttpPort())));
    }

+    // Send out an MR AM inited event for this AM.
+    dispatcher.getEventHandler().handle(
+        new JobHistoryEvent(job.getID(), new AMStartedEvent(amInfo
+            .getAppAttemptId(), amInfo.getStartTime(), amInfo.getContainerId(),
+            amInfo.getNodeManagerHost(), amInfo.getNodeManagerPort(), amInfo
+                .getNodeManagerHttpPort(), this.forcedState == null ? null
+                    : this.forcedState.toString())));
+    amInfos.add(amInfo);
+
    // metrics system init is really init & start.
    // It's more test friendly to put it here.
    DefaultMetricsSystem.initialize("MRAppMaster");
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/jobhistory/TestJobHistoryEventHandler.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/jobhistory/TestJobHistoryEventHandler.java
@ -497,7 +497,7 @@ public void addToFileMap(JobId jobId) {
  JobHistoryEvent lastEventHandled;
  int eventsHandled = 0;
  @Override
-  protected void handleEvent(JobHistoryEvent event) {
+  public void handleEvent(JobHistoryEvent event) {
    this.lastEventHandled = event;
    this.eventsHandled++;
  }
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestMRAppMaster.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestMRAppMaster.java
@ -21,7 +21,8 @@
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 import static org.mockito.Mockito.mock;
-
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.times;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
@ -44,6 +45,10 @@
 import org.apache.hadoop.mapreduce.MRJobConfig;
 import org.apache.hadoop.mapreduce.OutputCommitter;
 import org.apache.hadoop.mapreduce.TypeConverter;
+import org.apache.hadoop.mapreduce.jobhistory.HistoryEvent;
+import org.apache.hadoop.mapreduce.jobhistory.JobHistoryEvent;
+import org.apache.hadoop.mapreduce.jobhistory.JobHistoryEventHandler;
+import org.apache.hadoop.mapreduce.jobhistory.JobUnsuccessfulCompletionEvent;
 import org.apache.hadoop.mapreduce.v2.api.records.JobId;
 import org.apache.hadoop.mapreduce.v2.app.client.ClientService;
 import org.apache.hadoop.mapreduce.v2.app.commit.CommitterEvent;
@ -70,6 +75,8 @@
 import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Test;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Mockito;

 public class TestMRAppMaster {
  private static final Log LOG = LogFactory.getLog(TestMRAppMaster.class);
@ -154,6 +161,9 @@ public void testMRAppMasterMidLock() throws IOException,
    assertTrue(appMaster.errorHappenedShutDown);
    assertEquals(JobStateInternal.ERROR, appMaster.forcedState);
    appMaster.stop();
+
+    // verify the final status is FAILED
+    verifyFailedStatus((MRAppMasterTest)appMaster, "FAILED");
  }
  
  @Test
@ -190,6 +200,9 @@ public void testMRAppMasterSuccessLock() throws IOException,
    assertTrue(appMaster.errorHappenedShutDown);
    assertEquals(JobStateInternal.SUCCEEDED, appMaster.forcedState);
    appMaster.stop();
+
+    // verify the final status is SUCCEEDED
+    verifyFailedStatus((MRAppMasterTest)appMaster, "SUCCEEDED");
  }
  
  @Test
@ -226,6 +239,9 @@ public void testMRAppMasterFailLock() throws IOException,
    assertTrue(appMaster.errorHappenedShutDown);
    assertEquals(JobStateInternal.FAILED, appMaster.forcedState);
    appMaster.stop();
+
+    // verify the final status is FAILED
+    verifyFailedStatus((MRAppMasterTest)appMaster, "FAILED");
  }
  
  @Test
@ -423,8 +439,20 @@ public void testMRAppMasterCredentials() throws Exception {


  }
-}

+  private void verifyFailedStatus(MRAppMasterTest appMaster,
+      String expectedJobState) {
+    ArgumentCaptor<JobHistoryEvent> captor = ArgumentCaptor
+        .forClass(JobHistoryEvent.class);
+    // handle two events: AMStartedEvent and JobUnsuccessfulCompletionEvent
+    verify(appMaster.spyHistoryService, times(2))
+        .handleEvent(captor.capture());
+    HistoryEvent event = captor.getValue().getHistoryEvent();
+    assertTrue(event instanceof JobUnsuccessfulCompletionEvent);
+    assertEquals(((JobUnsuccessfulCompletionEvent) event).getStatus()
+        , expectedJobState);
+  }
+}
 class MRAppMasterTest extends MRAppMaster {

  Path stagingDirPath;
@ -434,6 +462,7 @@ class MRAppMasterTest extends MRAppMaster {
  ContainerAllocator mockContainerAllocator;
  CommitterEventHandler mockCommitterEventHandler;
  RMHeartbeatHandler mockRMHeartbeatHandler;
+  JobHistoryEventHandler spyHistoryService;

  public MRAppMasterTest(ApplicationAttemptId applicationAttemptId,
      ContainerId containerId, String host, int port, int httpPort,
@ -502,4 +531,14 @@ public Credentials getCredentials() {
  public UserGroupInformation getUgi() {
    return currentUser;
  }
+
+  @Override
+  protected EventHandler<JobHistoryEvent> createJobHistoryHandler(
+      AppContext context) {
+    spyHistoryService =
+        Mockito.spy((JobHistoryEventHandler) super
+            .createJobHistoryHandler(context));
+    spyHistoryService.setForcejobCompletion(this.isLastAMRetry);
+    return spyHistoryService;
+  }
 }
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/AMStartedEvent.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/jobhistory/AMStartedEvent.java
@ -34,6 +34,7 @@
@InterfaceStability.Unstable
 public class AMStartedEvent implements HistoryEvent {
  private AMStarted datum = new AMStarted();
+  private String forcedJobStateOnShutDown;

  /**
   * Create an event to record the start of an MR AppMaster
@ -54,12 +55,38 @@ public class AMStartedEvent implements HistoryEvent {
  public AMStartedEvent(ApplicationAttemptId appAttemptId, long startTime,
      ContainerId containerId, String nodeManagerHost, int nodeManagerPort,
      int nodeManagerHttpPort) {
+    this(appAttemptId, startTime, containerId, nodeManagerHost,
+        nodeManagerPort, nodeManagerHttpPort, null);
+  }
+
+  /**
+   * Create an event to record the start of an MR AppMaster
+   *
+   * @param appAttemptId
+   *          the application attempt id.
+   * @param startTime
+   *          the start time of the AM.
+   * @param containerId
+   *          the containerId of the AM.
+   * @param nodeManagerHost
+   *          the node on which the AM is running.
+   * @param nodeManagerPort
+   *          the port on which the AM is running.
+   * @param nodeManagerHttpPort
+   *          the httpPort for the node running the AM.
+   * @param forcedJobStateOnShutDown
+   *          the state to force the job into
+   */
+  public AMStartedEvent(ApplicationAttemptId appAttemptId, long startTime,
+      ContainerId containerId, String nodeManagerHost, int nodeManagerPort,
+      int nodeManagerHttpPort, String forcedJobStateOnShutDown) {
    datum.applicationAttemptId = new Utf8(appAttemptId.toString());
    datum.startTime = startTime;
    datum.containerId = new Utf8(containerId.toString());
    datum.nodeManagerHost = new Utf8(nodeManagerHost);
    datum.nodeManagerPort = nodeManagerPort;
    datum.nodeManagerHttpPort = nodeManagerHttpPort;
+    this.forcedJobStateOnShutDown = forcedJobStateOnShutDown;
  }

  AMStartedEvent() {
@ -116,6 +143,13 @@ public int getNodeManagerHttpPort() {
    return datum.nodeManagerHttpPort;
  }

+  /**
+   * @return the state to force the job into
+   */
+  public String getForcedJobStateOnShutDown() {
+    return this.forcedJobStateOnShutDown;
+  }
+
  /** Get the attempt id */

  @Override