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From "Jerry He (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-11632) Region split needs to clear force split flag at the end of SplitRequest run
Date Thu, 31 Jul 2014 18:03:39 GMT
Jerry He created HBASE-11632:
--------------------------------

             Summary: 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


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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