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https://issues.apache.org/jira/browse/HBASE-11632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14081871#comment-14081871
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Jerry He commented on HBASE-11632:
----------------------------------
Attached v2 that added another catch to clear the force split flag, and added a
test case.
> Region split needs to clear force split flag at the end of SplitRequest run
> ---------------------------------------------------------------------------
>
> Key: HBASE-11632
> URL: https://issues.apache.org/jira/browse/HBASE-11632
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 0.99.0, 0.98.5
> Reporter: Jerry He
> Assignee: Jerry He
> Priority: Minor
> Attachments: HBASE-11632-master-v2.patch, HBASE-11632-master.patch
>
>
> force split flag is used when a user requests region split and specifies a
> split key.
> {code}
> region.forceSplit(splitPoint);
> {code}
> We need to clear force split flag at the end of SplitRequest run. If the
> region split is successful, this parent region will go away and there is no
> need to clear this flag. But we will have problem when the split is not
> successful or rejected. Here is the case:
> 1. User requested region split at rownkey-n.
> 2. We set forceSplit in the region with rownkey-n.
> 3. The split request got rejected because the region had references.
> 4. After a while, there was a system request split for the same region.
> 5. The region would use forceSplit and rownkey-n to split. What should have
> happened is that the region split is done based on system split policy.
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