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https://issues.apache.org/jira/browse/HBASE-1145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12666953#action_12666953
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Evgeny Ryabitskiy commented on HBASE-1145:
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For this issue can be used Ephemeral ZNode created by HMaster.
HMaster can use following algorithm for enshuring:
1) after establishing connection to ZK:
exists(masterZNode, false);
2.1) if NOT exists:
create(masterZNode, "Master is connected!",EPHEMERAL);
END;
2.2) if exists:
Master is already connected to ZK!
close connection; exit Master with fail
> Ensure that there is only 1 Master with Zookeeper
> -------------------------------------------------
>
> Key: HBASE-1145
> URL: https://issues.apache.org/jira/browse/HBASE-1145
> Project: Hadoop HBase
> Issue Type: Sub-task
> Reporter: Jean-Daniel Cryans
> Assignee: Evgeny Ryabitskiy
>
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