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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HADOOP-727) Hadoop should include a general purpose distributed lock manager
Date Wed, 30 Jul 2008 18:11:32 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Owen O'Malley resolved HADOOP-727.
----------------------------------

    Resolution: Duplicate

I think we can close this now that Zookeeper is a subproject.

> Hadoop should include a general purpose distributed lock manager
> ----------------------------------------------------------------
>
>                 Key: HADOOP-727
>                 URL: https://issues.apache.org/jira/browse/HADOOP-727
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: ipc
>            Reporter: Sameer Paranjpye
>            Assignee: Owen O'Malley
>            Priority: Minor
>
> Related to HADOOP-726. Currently, there is no good way for distributed apps using HDFS
or Map/Reduce to synchronize their operations. HDFS locking doesn't work very well and lock
management is an unnecessary burden on the namenode. In addition, it depending on the filesystem
for locking could make applications less portable. Hadoop should implement a general purpose
distributed lock management service.

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