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https://issues.apache.org/jira/browse/GIRAPH-522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13580174#comment-13580174
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Nitay Joffe commented on GIRAPH-522:
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Output of jmap looks something like this:
https://gist.github.com/nitay/9b54c95944e7b8bd9f59
> 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
>
> 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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