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From "Jerry He (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-11632) Region split needs to clear force split flag at the end of SplitRequest run
Date Thu, 31 Jul 2014 18:07:39 GMT

     [ https://issues.apache.org/jira/browse/HBASE-11632?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jerry He updated HBASE-11632:
-----------------------------

    Attachment: HBASE-11632-master.patch

> 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.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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