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https://issues.apache.org/jira/browse/HBASE-9630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13774398#comment-13774398
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Nicolas Liochon commented on HBASE-9630:
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nit: In the master, we should do as in the region region server: grouping the
creation & the start, w/o testing for null.
+ if (this.pauseMonitor != null) {
+ pauseMonitor.start();
+ }
+1 on the idea, I haven't tested the patch but it seems ok. I'm not sure about
the interruptions management, but I guess it's good enough.
> 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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