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Date: Fri, 13 Jan 2012 20:46:39 +0000 (UTC)
From: "Bikas Saha (Updated) (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Updated] (HDFS-2681) Add ZK client for leader election
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     [ https://issues.apache.org/jira/browse/HDFS-2681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bikas Saha updated HDFS-2681:
-----------------------------

    Attachment: HDFS-2681.HDFS-1623.patch

Patch that takes care of review comments.
                
> Add ZK client for leader election
> ---------------------------------
>
>                 Key: HDFS-2681
>                 URL: https://issues.apache.org/jira/browse/HDFS-2681
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Suresh Srinivas
>            Assignee: Bikas Saha
>             Fix For: HA branch (HDFS-1623)
>
>         Attachments: HDFS-2681.HDFS-1623.patch, HDFS-2681.HDFS-1623.patch, HDFS-2681.HDFS-1623.patch, Zookeeper based Leader Election and Monitoring Library.pdf
>
>
> ZKClient needs to support the following capabilities:
> # Ability to create a znode for co-ordinating leader election.
> # Ability to monitor and receive call backs when active znode status changes.
> # Ability to get information about the active node.

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