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https://issues.apache.org/jira/browse/HDFS-4887?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13695825#comment-13695825
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Jing Zhao commented on HDFS-4887:
---------------------------------
Thanks Kihwal!
For the new patch, do we need to declare checkNSRunning as volatile, since it
can be set and retrieved by different threads?
> TestNNThroughputBenchmark exits abruptly
> ----------------------------------------
>
> Key: HDFS-4887
> URL: https://issues.apache.org/jira/browse/HDFS-4887
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: benchmarks, test
> Affects Versions: 3.0.0, 2.1.0-beta
> Reporter: Kihwal Lee
> Assignee: Kihwal Lee
> Attachments: HDFS-4887.patch, HDFS-4887.patch
>
>
> After HDFS-4840, TestNNThroughputBenchmark exits in the middle. This is
> because ReplicationMonitor is being stopped while NN is still running.
> This is only valid during testing. In normal cases, ReplicationMonitor thread
> runs all the time once started. In standby or safemode, it just skips
> calculating DN work. I think NNThroughputBenchmark needs to use ExitUtil to
> prevent termination, rather than modifying ReplicationMonitor.
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