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https://issues.apache.org/jira/browse/HBASE-1621?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jean-Daniel Cryans updated HBASE-1621:
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Attachment: HBASE-1621.patch
Here's an initial implementation for online merging, along with a unit test. I
tested it on a small table in a small cluster, worked as advertised. There's
currently no rollbacking so if anything happens during the merge then the 2
regions will stay OFFLINE which means that you need to disable/enable the table
to get them back.
Based off branch.
> merge tool should work on online cluster, but disabled table
> ------------------------------------------------------------
>
> Key: HBASE-1621
> URL: https://issues.apache.org/jira/browse/HBASE-1621
> Project: HBase
> Issue Type: Bug
> Reporter: ryan rawson
> Fix For: 0.21.0
>
> Attachments: HBASE-1621.patch
>
>
> taking down the entire cluster to merge 2 regions is a pain, i dont see why
> the table or regions specifically couldnt be taken offline, then merged then
> brought back up.
> this might need a new API to the regionservers so they can take direction
> from not just the master.
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