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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8217) Port online region merge (HBASE-7403) to 0.94
Date Fri, 29 Mar 2013 01:13:15 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8217?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Enis Soztutar updated HBASE-8217:

    Attachment: hbase-8217_v2.patch

Attaching backported patch. This depends on HBASE-8196. 

A couple of changes from the original patch: 
 - RPC changes (obviously)
 - AM.processRegionsInTransition() handles SPLITTING/SPLIT and MERGING/MERGE cases, while
0.94 AM does not handle SPLITTING/SPLIT states. I did not add the corresponding MERGE changes.
Shall we open another issue for adding the SPLIT changes? 
 - CatalogJanitor is not exposed in 0.94 through RPC. Added some reflection code in test.

Rolling upgrades should work. I did not see a case which might cause a problem. However, obviously,
you should not try to merge unless cluster is fully upgraded. 

Unit tests seem good. 
Results :

Tests run: 1333, Failures: 0, Errors: 0, Skipped: 13

[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
> Port online region merge (HBASE-7403) to 0.94
> ---------------------------------------------
>                 Key: HBASE-8217
>                 URL: https://issues.apache.org/jira/browse/HBASE-8217
>             Project: HBase
>          Issue Type: New Feature
>          Components: master, Region Assignment, regionserver
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 0.94.7
>         Attachments: hbase-8217_v2.patch
> HBASE-7403 added online region merge, and there was some discussion about whether we
can port this to 0.94. 
> In this issue, we can discuss feasibility and decide one what way or the other. I actually
have a patch on top of backported HBASE-7721. 

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