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https://issues.apache.org/jira/browse/HBASE-12957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14530035#comment-14530035
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Hudson commented on HBASE-12957:
--------------------------------
FAILURE: Integrated in HBase-1.0 #902 (See
[https://builds.apache.org/job/HBase-1.0/902/])
HBASE-12957 region_mover#isSuccessfulScan may be extremely slow on region with
lots of expired data. (hongyu bi) (larsh: rev
be397afc15f85be14dfb6a13473491fbe04ff5fe)
* bin/region_mover.rb
> region_mover#isSuccessfulScan may be extremely slow on region with lots of
> expired data
> ---------------------------------------------------------------------------------------
>
> Key: HBASE-12957
> URL: https://issues.apache.org/jira/browse/HBASE-12957
> Project: HBase
> Issue Type: Improvement
> Components: scripts
> Reporter: hongyu bi
> Assignee: hongyu bi
> Priority: Minor
> Fix For: 2.0.0, 1.1.0, 0.98.11, 1.0.2
>
> Attachments: HBASE-12957-v0.patch
>
>
> region_mover will call isSuccessfulScan when region has moved to make sure
> it's healthy, however , if the moved region has lots of expired data
> region_mover#isSuccessfulScan will take a long time to finish ,that may even
> exceed "lease timeout".So I made isSuccessfulScan a get-like scan to achieve
> faster response in that case.
> workaround:before graceful_stop/rolling_restart ，call major_compact on the
> table with small TTL
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