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https://issues.apache.org/jira/browse/GIRAPH-522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13580324#comment-13580324
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Claudio Martella commented on GIRAPH-522:
-----------------------------------------
This is very handy. Although this is mostly useful for us as giraph internals
developers, a couple of lines documentation on usage would be good, maybe to
the class javadoc.
> JMap Dumper
> -----------
>
> Key: GIRAPH-522
> URL: https://issues.apache.org/jira/browse/GIRAPH-522
> Project: Giraph
> Issue Type: Bug
> Reporter: Nitay Joffe
> Assignee: Nitay Joffe
> Attachments: GIRAPH-522.patch
>
>
> We've been using this for our jobs for a while now and figured we would
> contribute it back. This is an observer for both worker and master (in other
> words for every node) that periodically dumps the output of "jmap -histo".
> This has been very handy for us in debugging memory issues and seeing what
> allocations are happening.
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