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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8617) Introducing a new config to disable writes during recovering
Date Thu, 20 Jun 2013 11:58:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8617?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13689174#comment-13689174
] 

Hudson commented on HBASE-8617:
-------------------------------

Integrated in hbase-0.95-on-hadoop2 #139 (See [https://builds.apache.org/job/hbase-0.95-on-hadoop2/139/])
    HBASE-8617: Introducing a new config to disable writes during recovering (Revision 1494814)

     Result = FAILURE
jeffreyz : 
Files : 
* /hbase/branches/0.95/hbase-common/src/main/java/org/apache/hadoop/hbase/HConstants.java
* /hbase/branches/0.95/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
* /hbase/branches/0.95/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestDistributedLogSplitting.java

                
> Introducing a new config to disable writes during recovering 
> -------------------------------------------------------------
>
>                 Key: HBASE-8617
>                 URL: https://issues.apache.org/jira/browse/HBASE-8617
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>    Affects Versions: 0.98.0, 0.95.1
>            Reporter: Jeffrey Zhong
>            Assignee: Jeffrey Zhong
>             Fix For: 0.98.0, 0.95.2
>
>         Attachments: HBASE-8617.patch, HBASE-8617-v2.patch, hbase-8617-v3.patch
>
>
> In distributedLogReplay(hbase-7006), we allow writes even when a region is in recovering.
It may cause undesired behavior when applications(or deployments) already are near its write
capacity because distributedLogReplay generates more write traffic to remaining region servers.
> The new config "hbase.regionserver.disallow.writes.when.recovering" tries to address
the above situation so that recovering won't be affected by application normal write traffic.
> The default value of this config is false(meaning allow writes in recovery)

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