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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-2868) Native Memory Leak
Date Tue, 23 Aug 2011 20:20:29 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13089721#comment-13089721
] 

Hudson commented on CASSANDRA-2868:
-----------------------------------

Integrated in Cassandra-0.7 #543 (See [https://builds.apache.org/job/Cassandra-0.7/543/])
    work around native memory leak in com.sun.management.GarbageCollectorMXBean
patch by brandonwilliams and jbellis for CASSANDRA-2868

brandonwilliams : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1160879
Files : 
* /cassandra/branches/cassandra-0.7/CHANGES.txt
* /cassandra/branches/cassandra-0.7/src/java/org/apache/cassandra/service/GCInspector.java


> Native Memory Leak
> ------------------
>
>                 Key: CASSANDRA-2868
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2868
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Daniel Doubleday
>            Assignee: Brandon Williams
>            Priority: Minor
>             Fix For: 0.7.9, 0.8.5
>
>         Attachments: 2868-v1.txt, 2868-v2.txt, 2868-v3.txt, 48hour_RES.png, low-load-36-hours-initial-results.png
>
>
> We have memory issues with long running servers. These have been confirmed by several
users in the user list. That's why I report.
> The memory consumption of the cassandra java process increases steadily until it's killed
by the os because of oom (with no swap)
> Our server is started with -Xmx3000M and running for around 23 days.
> pmap -x shows
> Total SST: 1961616 (mem mapped data and index files)
> Anon  RSS: 6499640
> Total RSS: 8478376
> This shows that > 3G are 'overallocated'.
> We will use BRAF on one of our less important nodes to check wether it is related to
mmap and report back.

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