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From "Eric Badger (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5700) testAMRestartNotLostContainerCompleteMsg times out intermittently in 2.8
Date Mon, 03 Oct 2016 16:44:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-5700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15542824#comment-15542824
] 

Eric Badger commented on YARN-5700:
-----------------------------------

testAMRestartNotLostContainerCompleteMsg times out intermittently in branch-2.8, but also
intermittently increases the runtime of the test in branch-2 and trunk by ~10 seconds. These
phenomena can be reproduced reliably by adding a {{Thread.sleep(10)}} to the code as shown
below. A sleep as low as 1ms seems to trigger the race condition, though it isn't 100% reliable
for failure at a sleep value that low. 

{noformat}
771    // container complete
772    nm1.nodeHeartbeat(
773        am1.getApplicationAttemptId(), 2, ContainerState.COMPLETE);
774    Thread.sleep(10);
775    rm1.waitForState(nm1, containerId2, RMContainerState.COMPLETED);
{noformat}

> testAMRestartNotLostContainerCompleteMsg times out intermittently in 2.8
> ------------------------------------------------------------------------
>
>                 Key: YARN-5700
>                 URL: https://issues.apache.org/jira/browse/YARN-5700
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Eric Badger
>            Assignee: Eric Badger
>
> {noformat}
> java.lang.Exception: test timed out after 30000 milliseconds
> 	at java.lang.Thread.sleep(Native Method)
> 	at org.apache.hadoop.yarn.server.resourcemanager.MockRM.waitForState(MockRM.java:301)
> 	at org.apache.hadoop.yarn.server.resourcemanager.MockRM.waitForState(MockRM.java:286)
> 	at org.apache.hadoop.yarn.server.resourcemanager.MockRM.waitForState(MockRM.java:281)
> 	at org.apache.hadoop.yarn.server.resourcemanager.applicationsmanager.TestAMRestart.testAMRestartNotLostContainerCompleteMsg(TestAMRestart.java:774)
> {noformat}



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