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From "Yufei Gu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5024) TestContainerResourceUsage#testUsageAfterAMRestartWithMultipleContainers random failure
Date Wed, 04 May 2016 16:18:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-5024?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15270923#comment-15270923
] 

Yufei Gu commented on YARN-5024:
--------------------------------

Hi [~bibinchundatt] and [~rohithsharma], I agreed. If you find other test cases have the same
root causes in YARN-4929, better to solve them as well and comment in YARN-4929. So next time
people will focus on other tests in YARN-4929. But no need to bock this one. 

Other than that, MockRM has these methods for waiting for a state of a container. A new wait
function may be not necessary. Even for multiple containers, you can still reuse them.  
  /**
   * Wait until a container has reached a specified state.
   * The timeout is 10 seconds.
   * @param nm A mock nodemanager
   * @param containerId the id of a container
   * @param containerState the container state waited
   * @return if reach the state before timeout; false otherwise.
   * @throws Exception
   *         if interrupted while waiting for the state transition
   *         or an unexpected error while MockNM is hearbeating.
   */
  public boolean waitForState(MockNM nm, ContainerId containerId,
      RMContainerState containerState) throws Exception {
    return waitForState(nm, containerId, containerState,
      TIMEOUT_MS_FOR_CONTAINER_AND_NODE);
  }

  /**
   * Wait until a container has reached a specified state.
   * The timeout is specified by the parameter.
   * @param nm A mock nodemanager
   * @param containerId the id of a container
   * @param containerState the container state waited
   * @param timeoutMsecs the length of timeout in milliseconds
   * @return if reach the state before timeout; false otherwise.
   * @throws Exception
   *         if interrupted while waiting for the state transition
   *         or an unexpected error while MockNM is hearbeating.
   */
  public boolean waitForState(MockNM nm, ContainerId containerId,
      RMContainerState containerState, int timeoutMsecs) throws Exception {
    return waitForState(Arrays.asList(nm), containerId, containerState,
      timeoutMsecs);
  }

> TestContainerResourceUsage#testUsageAfterAMRestartWithMultipleContainers random failure
> ---------------------------------------------------------------------------------------
>
>                 Key: YARN-5024
>                 URL: https://issues.apache.org/jira/browse/YARN-5024
>             Project: Hadoop YARN
>          Issue Type: Test
>            Reporter: Bibin A Chundatt
>            Assignee: Bibin A Chundatt
>         Attachments: 0001-YARN-5024.patch, 0002-YARN-5024.patch, 0003-YARN-5024.patch
>
>
> Random Testcase failure for {{TestContainerResourceUsage#testUsageAfterAMRestartWithMultipleContainers}}
> {noformat}
> java.lang.AssertionError: Unexcpected MemorySeconds value expected:<-1497214794931>
but was:<1913>
> 	at org.junit.Assert.fail(Assert.java:88)
> 	at org.junit.Assert.failNotEquals(Assert.java:743)
> 	at org.junit.Assert.assertEquals(Assert.java:118)
> 	at org.junit.Assert.assertEquals(Assert.java:555)
> 	at org.apache.hadoop.yarn.server.resourcemanager.TestContainerResourceUsage.amRestartTests(TestContainerResourceUsage.java:395)
> 	at org.apache.hadoop.yarn.server.resourcemanager.TestContainerResourceUsage.testUsageAfterAMRestartWithMultipleContainers(TestContainerResourceUsage.java:252)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:498)
> 	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
> 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> 	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
> 	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> 	at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
> {noformat}



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