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https://issues.apache.org/jira/browse/HDFS-797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12783961#action_12783961
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Todd Lipcon commented on HDFS-797:
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One thought: could be a race that is triggered more often on machines with
fewer cores. The build machine I was testing on has 4 cores, whereas my laptop
has 2.
> TestHDFSCLI much slower after HDFS-265 merge
> --------------------------------------------
>
> Key: HDFS-797
> URL: https://issues.apache.org/jira/browse/HDFS-797
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs client
> Affects Versions: 0.21.0, 0.22.0
> Reporter: Todd Lipcon
>
> After the merge of HDFS-265 into trunk, TestHDFSCLI takes much longer to run
> (>10min, got tired of waiting). Changing dataQueue.wait(1000) to
> dataQueue.wait(10) on line 2708 speeds up the test back to its original
> performance. This isn't a fix, but displays the issue - somehow the thread
> isn't getting properly interrupted. In general this probably represents a
> performance regression for the exit of all HDFS writers (most noticeable in
> CLI tools)
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