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https://issues.apache.org/jira/browse/TEZ-3066?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15111659#comment-15111659
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Bikas Saha commented on TEZ-3066:
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Please avoid bulk import. "+import org.apache.tez.dag.app.dag.*;"
Could you please create a jira for a better fix with some of the ideas
discussed offline and reference that in a comment near the fix.
+1.
> TaskAttemptFinishedEvent ConcurrentModificationException in recovery or
> history logging services
> ------------------------------------------------------------------------------------------------
>
> Key: TEZ-3066
> URL: https://issues.apache.org/jira/browse/TEZ-3066
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.7.0
> Reporter: Jason Lowe
> Assignee: Jeff Zhang
> Attachments: TEZ-3066-1.patch, TEZ-3066-2.patch
>
>
> A ConcurrentModificationException can occur if a TaskAttemptFinishedEvent is
> processed by the recovery service or another history logging service. Sample
> stacktraces to follow.
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