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https://issues.apache.org/jira/browse/CASSANDRA-2654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13044147#comment-13044147
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Hudson commented on CASSANDRA-2654:
-----------------------------------
Integrated in Cassandra-0.6 #65 (See
[https://builds.apache.org/hudson/job/Cassandra-0.6/65/])
work around nio socket memory retention bug
patch by Hannes Schmidt and jbellis; tested by Thibaut, reviewed by slebresne
for CASSANDRA-2654
jbellis :
Files :
* /cassandra/branches/cassandra-0.6/CHANGES.txt
*
/cassandra/branches/cassandra-0.6/src/java/org/apache/cassandra/net/IncomingTcpConnection.java
> Work around native heap leak in sun.nio.ch.Util affecting
> IncomingTcpConnection
> -------------------------------------------------------------------------------
>
> Key: CASSANDRA-2654
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2654
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Environment: OpenJDK Runtime Environment (IcedTea6 1.9.7)
> (6b20-1.9.7-0ubuntu1~10.04.1)
> OpenJDK 64-Bit Server VM (build 19.0-b09, mixed mode)
> Also observed on Sun/Oracle JDK. Probably platform- and os-independent.
> Reporter: Hannes Schmidt
> Assignee: Hannes Schmidt
> Fix For: 0.7.7, 0.8.1
>
> Attachments: 2654-v2.txt, 2654-v3.txt, 2654-v4-0.7.txt, 2654-v4.txt,
> chunking.diff
>
>
> NIO's leaky, per-thread caching of direct buffers in combination with
> IncomingTcpConnection's eager buffering of messages leads to leakage of large
> amounts of native heap. Details in [1]. More on the root cause in [2]. Even
> though it doesn't fix the leak, attached patch has been found to alleviate
> the problem by keeping the size of each direct buffer modest.
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