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Date: Mon, 3 Feb 2014 19:27:08 +0000 (UTC)
From: "Pavan Kumar (JIRA)" <jira@apache.org>
To: giraph-dev@incubator.apache.org
Message-ID: <JIRA.12692929.1391455317297.28774.1391455628982@arcas>
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Subject: [jira] [Updated] (GIRAPH-842) option to dump histogram of memory
 usage when heap is low on memory
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     [ https://issues.apache.org/jira/browse/GIRAPH-842?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pavan Kumar updated GIRAPH-842:
-------------------------------

    Attachment: GIRAPH-842.patch

ReactiveJMapHistoDumper is based on JMapHistoDumper
I ran pagerank benchmark with the option enabled and minfreeheap set at 50Gb [just so that it prints the histogram when heap has lesser than threshold free space]

> option to dump histogram of memory usage when heap is low on memory
> -------------------------------------------------------------------
>
>                 Key: GIRAPH-842
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-842
>             Project: Giraph
>          Issue Type: Bug
>            Reporter: Pavan Kumar
>            Assignee: Pavan Kumar
>            Priority: Minor
>         Attachments: GIRAPH-842.patch
>
>
> Currently we are left in blind for jobs that OOM, it would be helpful if we can do a jmap -histo dump when heap has very little free space left.


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