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https://issues.apache.org/jira/browse/HBASE-9630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13774425#comment-13774425
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Nicolas Liochon commented on HBASE-9630:
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I think it might be useful to have it in the secondary master as well. For
example, if the secondary master is paused sometimes, we want to know this
before it becomes the primary master. Or if it starts to be paused when it
becomes the primary, we will want to know how it was behaving before imho.
> Add thread which detects JVM pauses like HADOOP's
> -------------------------------------------------
>
> Key: HBASE-9630
> URL: https://issues.apache.org/jira/browse/HBASE-9630
> Project: HBase
> Issue Type: New Feature
> Components: regionserver
> Affects Versions: 0.98.0
> Reporter: Liang Xie
> Assignee: Liang Xie
> Attachments: HBase-9630.txt
>
>
> Todd adds daemon threads for dn&nn to indicate the VM or kernel caused pause
> in application log, it's pretty handy for diagnose, i thought it's great to
> have similar ability in HBase.
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