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https://issues.apache.org/jira/browse/YARN-562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13638568#comment-13638568
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Jian He commented on YARN-562:
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bq. Can we signal an object here so that we can be notified here that we are
done launching stale containers
The purpose I'm sleeping inside getNodeStatusAndUpdateContainersInContext() is
not for synchronize purpose. I had actually already join the thread in
overridden rebootNodeStatusUpdater(). The goal here is to simulate that
"while(!containers.isEmpty())" is taking longer. Because its very likely that
it goes out of loop very quickly(only 1 running container) but the test thread
is still launching a bunch of containers. We want to test the wait loop will
not go indefinitely, while someone else keeps launching new containers
bq. We could start the launcher thread in the test code after sending the
RESYNC event
I dont think we can start here, because its possible,though unlikely,the test
thread has finished, but we have not reached inside the cleanupContainers
method at all
> NM should reject containers allocated by previous RM
> ----------------------------------------------------
>
> Key: YARN-562
> URL: https://issues.apache.org/jira/browse/YARN-562
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Jian He
> Assignee: Jian He
> Attachments: YARN-562.1.patch, YARN-562.2.patch, YARN-562.3.patch,
> YARN-562.4.patch, YARN-562.5.patch, YARN-562.6.patch, YARN-562.7.patch
>
>
> Its possible that after RM shutdown, before AM goes down,AM still call
> startContainer on NM with containers allocated by previous RM. When RM comes
> back, NM doesn't know whether this container launch request comes from
> previous RM or the current RM. we should reject containers allocated by
> previous RM
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