[jira] Assigned: (ZOOKEEPER-645) Bug in WriteLock recipe implementation?

["Mahadev konar (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-645?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mahadev konar reassigned ZOOKEEPER-645:
---------------------------------------

    Assignee: Mahadev konar  (was: Jaakko Laine)

> Bug in WriteLock recipe implementation?
> ---------------------------------------
>
>                 Key: ZOOKEEPER-645
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-645
>             Project: Zookeeper
>          Issue Type: Bug
>          Components: recipes
>    Affects Versions: 3.2.2
>         Environment: 3.2.2 java 1.6.0_12
>            Reporter: Jaakko Laine
>            Assignee: Mahadev konar
>            Priority: Minor
>             Fix For: 3.3.0
>
>         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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