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https://issues.apache.org/jira/browse/HDFS-15899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17302372#comment-17302372
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Jinglun commented on HDFS-15899:
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Submit v01. Hi [~leosun08], could you help reviewing this, thanks !
> Remove rpcThreadPool from DeadNodeDetector.
> -------------------------------------------
>
> Key: HDFS-15899
> URL: https://issues.apache.org/jira/browse/HDFS-15899
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Jinglun
> Assignee: Jinglun
> Priority: Major
> Attachments: HDFS-15899.001.patch
>
>
> The DeadNodeDetector uses a thread pool to do all the probe rpc calls. The
> purpose is to use the thread pool timeout to monitor the probe timeout. But
> the rpc client already has a timeout. We can use the rpc client timeout
> instead of the thread pool timeout and remove the rpcThreadPool.
> The rpcThreadPool introduces additional complexity for probing the DataNode.
> The probe task waiting in the busy rpcThreadPool might exceed the configured
> timeout. The probe task will be marked as failed even it is not scheduled.
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