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Date: Fri, 6 Jan 2012 23:08:42 +0000 (UTC)
From: "Jean-Daniel Cryans (Created) (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
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Subject: [jira] [Created] (HBASE-5141) Memory leak in
 MonitoredRPCHandlerImpl
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Memory leak in MonitoredRPCHandlerImpl
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                 Key: HBASE-5141
                 URL: https://issues.apache.org/jira/browse/HBASE-5141
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.92.0
            Reporter: Jean-Daniel Cryans
            Priority: Blocker
             Fix For: 0.92.0, 0.94.0


I got a pretty reliable way of OOME'ing my region servers. Using a big payload (64MB in my case), a default heap and default number of handlers, it's not too long that all the MonitoredRPCHandlerImpl hold on a 64MB reference and once a compaction kicks in it kills everything.

The issue is that even after the RPC call is done, the packet still lives in MonitoredRPCHandlerImpl.

Will attach a screen shot of jprofiler's analysis in a moment.

This is a blocker for 0.92.0, anyone using a high number of handlers and bigish values will kill themselves.

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