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https://issues.apache.org/jira/browse/HDFS-14651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16976380#comment-16976380
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Lisheng Sun commented on HDFS-14651:
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hi [~linyiqun]
{quote}Why we define additional probeThreadPool to do the rpc check? I mean we
can use sync way in Probe runnable. And Probe runnable is already in an async
way to execute in thread pool. I don't see the necessaries to define two thread
pool here.
{quote}
This situation is the case where the data node hangs and cannot respond to the
client.Release the thread until timeout. The timeout is too long. timeout
details is HADOOP-16553
if use sync way, It is likely that it will fill the thread pool and cannot
detect normal nodes.
Please correct me if i was wrong . Thank you.
> DeadNodeDetector checks dead node periodically
> ----------------------------------------------
>
> Key: HDFS-14651
> URL: https://issues.apache.org/jira/browse/HDFS-14651
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Lisheng Sun
> Assignee: Lisheng Sun
> Priority: Major
> Attachments: HDFS-14651.001.patch, HDFS-14651.002.patch
>
>
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