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Posted to dev@giraph.apache.org by "Nitay Joffe (JIRA)" <ji...@apache.org> on 2013/02/17 13:29:12 UTC

[jira] [Updated] (GIRAPH-522) JMap Dumper

     [ https://issues.apache.org/jira/browse/GIRAPH-522?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Nitay Joffe updated GIRAPH-522:
-------------------------------

    Attachment: GIRAPH-522.patch
    
> 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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