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https://issues.apache.org/jira/browse/MAPREDUCE-4576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13443231#comment-13443231
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Robert Joseph Evans commented on MAPREDUCE-4576:
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I have "verified" with some code changes that this fixes the issue. It is very
difficult to reproduce the error. I had to modify the code to cause the issue
to show up more often. I had to make it so the dist cache always was trying to
delete things, and it never actually deleted them, I also had to modify it so
that all dist cache entries take a long time to download, and on top of that I
had to hit it just right so that a job was finishing at the same time a dist
cache entry was being deleted. ugg.
> Large dist cache can block tasktracker heartbeat
> ------------------------------------------------
>
> Key: MAPREDUCE-4576
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4576
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.20.205.0, 1.0.0
> Reporter: Robert Joseph Evans
> Assignee: Robert Joseph Evans
> Attachments: MR-4576.txt
>
>
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