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https://issues.apache.org/jira/browse/HDFS-8771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14768890#comment-14768890
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Kanaka Kumar Avvaru commented on HDFS-8771:
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re-based the patch on latest trunk code. [~jingzhao], Can you please review the
changes?
> If IPCLoggerChannel#purgeLogsOlderThan takes too long, Namenode could not
> send another RPC calls to Journalnodes
> ----------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-8771
> URL: https://issues.apache.org/jira/browse/HDFS-8771
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Takuya Fukudome
> Assignee: Kanaka Kumar Avvaru
> Attachments: HDFS-8771-01.patch, HDFS-8771-02.patch,
> HDFS-8771-03.patch
>
>
> In our cluster, edits has became huge(about 50GB) accidentally and our
> Jounalnodes' disks were busy, therefore {{purgeLogsOlderThan}} took more than
> 30secs. If {{IPCLoggerChannel#purgeLogsOlderThan}} takes too much time,
> Namenode couldn't send other RPC calls to Journalnodes because
> {{o.a.h.hdfs.qjournal.client.IPCLoggerChannel}}'s executor is single thread.
> It will cause namenode shutting down.
> I think IPCLoggerChannel#purgeLogsOlderThan should not block other RPC calls
> like sendEdits.
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