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https://issues.apache.org/jira/browse/HBASE-1302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711794#action_12711794
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stack commented on HBASE-1302:
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This patch is amazing. I have a little cluster up, I kill the master.....
while its down, I can scan. I bring the master back up. All regions stay
where they were previous. Again I can scan. Let me do a bit more heavy-duty
testing but this is eXXXXXXcellent.
> When a new master comes up, regionservers should continue with their region
> assignments from the last master
> ------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-1302
> URL: https://issues.apache.org/jira/browse/HBASE-1302
> Project: Hadoop HBase
> Issue Type: Improvement
> Components: master, regionserver
> Affects Versions: 0.20.0
> Reporter: Nitay Joffe
> Assignee: Jean-Daniel Cryans
> Fix For: 0.20.0
>
> Attachments: hbase-1302-v1.patch, hbase-1302-v2.patch
>
>
> After HBASE-1205, we can now handle a master going down and coming up
> somewhere else. When this happens, the new master will scan everything and
> reassign all the regions, which is not ideal. Instead of doing that, we
> should keep the region assignments from the last master.
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