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From "hongyu bi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-12957) region_mover#isSuccessfulScan may extremely slow on region with lots of expired data
Date Tue, 03 Feb 2015 06:41:34 GMT

     [ https://issues.apache.org/jira/browse/HBASE-12957?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

hongyu bi updated HBASE-12957:
------------------------------
    Attachment: HBASE-12957-v0.patch

> region_mover#isSuccessfulScan may 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
>            Priority: Minor
>         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. 



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