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Posted to issues@hbase.apache.org by "Ashutosh Jindal (JIRA)" <ji...@apache.org> on 2012/06/01 16:41:23 UTC
[jira] [Commented] (HBASE-6046) Master retry on ZK session expiry
causes inconsistent region assignments.
[ https://issues.apache.org/jira/browse/HBASE-6046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13287451#comment-13287451 ]
Ashutosh Jindal commented on HBASE-6046:
----------------------------------------
Attached patch for 0.94 version. Please review and provide your suggestion/comments.
> Master retry on ZK session expiry causes inconsistent region assignments.
> -------------------------------------------------------------------------
>
> Key: HBASE-6046
> URL: https://issues.apache.org/jira/browse/HBASE-6046
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.92.1, 0.94.0
> Reporter: Gopinathan A
> Assignee: ramkrishna.s.vasudevan
> Attachments: HBASE_6046_0.94.patch
>
>
> 1> ZK Session timeout in the hmaster leads to bulk assignment though all the RSs are online.
> 2> While doing bulk assignment, if the master again goes down & restart(or backup comes up) all the node created in the ZK will now be tried to reassign to the new RSs. This is leading to double assignment.
> we had 2800 regions, among this 1900 region got double assignment, taking the region count to 4700.
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