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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15429) Add a split policy for busy regions
Date Fri, 10 Mar 2017 03:12:38 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15904325#comment-15904325
] 

Hudson commented on HBASE-15429:
--------------------------------

SUCCESS: Integrated in Jenkins build HBase-1.3-IT #6 (See [https://builds.apache.org/job/HBase-1.3-IT/6/])
HBASE-15429 Add split policy for busy regions (garyh: rev 0db1e0f7a80da125d3819e5e6efd8b7af09ffe31)
* (edit) hbase-common/src/main/resources/hbase-default.xml
* (add) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/BusyRegionSplitPolicy.java
* (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionSplitPolicy.java


> 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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