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https://issues.apache.org/jira/browse/ZOOKEEPER-58?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12616998#action_12616998
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Benjamin Reed commented on ZOOKEEPER-58:
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+1
> Race condition on ClientCnxn.java
> ---------------------------------
>
> Key: ZOOKEEPER-58
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-58
> Project: Zookeeper
> Issue Type: Bug
> Components: java client
> Reporter: Flavio Paiva Junqueira
> Assignee: Benjamin Reed
> Attachments: ZOOKEEPER-58.patch
>
>
> There is a race condition involving the ByteByffer incomingBuffer, a field of
> ClientCnxn.SendThread. SendThread reads a packet in two steps: first it reads
> the length of the packet, followed by a read of the packet itself. Each of
> these steps corresponds to a call to doIO() from the main loop of run(). If
> there is an exception or the session times out, then it may leave
> incomingBuffer in an inconsistent state.
> The attached patch adds code to reset incomingBuffer upon a call to
> SendThread.cleanup(). This method is called upon an exception on run().
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