james strachan updated ZOOKEEPER-63:

    Status: Patch Available  (was: Open)

about to attach a patch

> Race condition in client close() operation
> ------------------------------------------
>                 Key: ZOOKEEPER-63
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-63
>             Project: Zookeeper
>          Issue Type: Bug
>          Components: java client
>            Reporter: Patrick Hunt
>            Assignee: Benjamin Reed
>         Attachments: patch_ZOOKEEPER-63.patch
> There is a race condition in the java close operation on ZooKeeper.java.
> Client is sending a disconnect request to the server. Server will close any 
> open connections with the client when it receives this. If the client has not 
> yet shutdown it's subthreads (event/send threads for example) these threads 
> may consider the condition an error. We see this alot in the tests where the 
> clients output error logs because they are unaware that a disconnection has 
> been requested by the client.
> Ben mentioned: perhaps we just have to change state to closed (on client) 
> before sending disconnect request.

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