Jaakko Laine updated ZOOKEEPER-645:

    Attachment: 645-fix-findPrefixInChildren.patch

Attached patch addresses issue 2 above.

> Bug in WriteLock recipe implementation?
> ---------------------------------------
>                 Key: ZOOKEEPER-645
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-645
>             Project: Zookeeper
>          Issue Type: Bug
>    Affects Versions: 3.2.2
>         Environment: 3.2.2 java 1.6.0_12
>            Reporter: Jaakko Laine
>            Priority: Minor
>         Attachments: 645-fix-findPrefixInChildren.patch
> Not sure, but there seem to be two issues in the example WriteLock:
> (1) ZNodeName is sorted according to session ID first, and then according to 
> znode sequence number. This might cause starvation as lower session IDs 
> always get priority. WriteLock is not thread-safe in the first place, so 
> having session ID involved in compare operation does not seem to make sense.
> (2) if findPrefixInChildren finds previous ID, it should add dir in front of 
> the ID

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