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https://issues.apache.org/jira/browse/TEZ-3009?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15062896#comment-15062896
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Jason Lowe commented on TEZ-3009:
---------------------------------
Sample container log showing the problem:
{noformat}
2015-12-11 18:53:23,832 [INFO] [TezChild] |task.ContainerReporter|: Attempting
to fetch new task for container container_e06_1449209941524_271349_01_002271
2015-12-11 18:53:23,879 [INFO] [main] |task.TezChild|: Shutdown invoked for
container container_e06_1449209941524_271349_01_002271
2015-12-11 18:53:23,880 [INFO] [main] |task.TezChild|: Shutting down container
container_e06_1449209941524_271349_01_002271
{noformat}
There's straightline code between the "Attempting to fetch new task ..." log
message and a later log of "Got TaskUpdate for ...". However we don't see the
latter log message, so something threw an exception. Unfortunately the code
that catches the exception squirrels it into a return result that is
subsequently ignored by the main code without logging it.
> Errors that occur during container task acquisition are not logged
> ------------------------------------------------------------------
>
> Key: TEZ-3009
> URL: https://issues.apache.org/jira/browse/TEZ-3009
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.7.0
> Reporter: Jason Lowe
>
> If TezChild encounters an error while trying to obtain a task the error will
> be silently handled. This results in a mysterious shutdown of containers
> with no cause.
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