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https://issues.apache.org/jira/browse/CASSANDRA-2273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13002773#comment-13002773
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Sébastien Giroux commented on CASSANDRA-2273:
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Sorry, that was after I took the screenshot :P But I'm more worried about the
heap usage spike that randomly happen for no apparent reason. Of course, the
OOM happen usually right after that.
I'm bringing this here cause I didn't had any issue at all with 0.6. Now with
0.7.3, we have more nodes and less traffic and the nodes OOM way more often.
I'm wondering what can start randomly using all that heap space while there's
no compaction going ?
> Possible Memory leak
> --------------------
>
> Key: CASSANDRA-2273
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2273
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Sébastien Giroux
> Priority: Critical
> Fix For: 0.7.4
>
> Attachments: heap_peak_OOM.PNG
>
>
> I have a few problematic nodes in my cluster that will crash OutOfMemory very
> often. This is Cassandra 0.7.3 downloaded from Hudson.
> Heap size is 6GB, server memory is 8GB.
> Memtable are flushed at 64MB, I have 5 CFs.
> FlushLargestMemtablesAt is set at 0.8 but doesn't help with this issue.
> I will attach a screenshot showing my issue. There is no compaction going on
> when the heap usage start increasing like crazy.
> It could be a configuration issue but it kinda looks like a bug to me.
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