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https://issues.apache.org/jira/browse/HADOOP-1562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12510825
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Hadoop QA commented on HADOOP-1562:
-----------------------------------
+0, new Findbugs warnings
http://issues.apache.org/jira/secure/attachment/12361237/1562_1.patch
applied and successfully tested against trunk revision r553623,
but there appear to be new Findbugs warnings introduced by this patch.
New Findbugs warnings:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/372/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Test results:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/372/testReport/
Console output:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/372/console
> Report Java VM metrics
> ----------------------
>
> Key: HADOOP-1562
> URL: https://issues.apache.org/jira/browse/HADOOP-1562
> Project: Hadoop
> Issue Type: New Feature
> Components: metrics
> Reporter: David Bowen
> Assignee: David Bowen
> Attachments: 1562.patch, 1562_1.patch
>
>
> It would be useful to have each Java process in Hadoop (JobTracker,
> TaskTracker, NameNode and DataNode) report some Java VM metrics. E.g.
> heap/non-heap memory used/committed, number of garbage collections and
> percentage of time spent in GC, number of threads that are
> runnable/blocked/waiting/etc.
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