[jira] [Updated] (HBASE-15429) Add a split policy for busy regions

["Gary Helmling (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-15429?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gary Helmling updated HBASE-15429:
----------------------------------
    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

Committed the branch-1 patch to branch-1 and branch-1.3.

[~mantonov] I pulled this in to 1.3 since it's completely self contained and not used unless enabled.  If you see an issue, let me know and I can revert.

> Add a split policy for busy regions
> -----------------------------------
>
>                 Key: HBASE-15429
>                 URL: https://issues.apache.org/jira/browse/HBASE-15429
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Ashu Pachauri
>            Assignee: Ashu Pachauri
>             Fix For: 2.0.0, 1.4.0, 1.3.1
>
>         Attachments: HBASE-15429.branch-1.patch, HBASE-15429.patch, HBASE-15429-V1.patch, HBASE-15429-V2.patch
>
>
> Currently, all region split policies are based on size. However, in certain cases, it is a wise choice to make a split decision based on number of requests to the region and split busy regions.
> A crude metric is that if a region blocks writes often and throws RegionTooBusyExceoption, it's probably a good idea to split it.



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