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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7006) [MTTR] Improve Region Server Recovery Time - Distributed Log Replay
Date Sat, 18 May 2013 01:02:27 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13661190#comment-13661190
] 

Hudson commented on HBASE-7006:
-------------------------------

Integrated in hbase-0.95 #202 (See [https://builds.apache.org/job/hbase-0.95/202/])
    HBASE-7006 [MTTR] Improve Region Server Recovery Time - Distributed Log Replay, Addendum
disables the feature by default (Revision 1484021)

     Result = FAILURE
tedyu : 
Files : 
* /hbase/branches/0.95/hbase-common/src/main/java/org/apache/hadoop/hbase/HConstants.java
* /hbase/branches/0.95/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMasterFileSystem.java

                
> [MTTR] Improve Region Server Recovery Time - Distributed Log Replay
> -------------------------------------------------------------------
>
>                 Key: HBASE-7006
>                 URL: https://issues.apache.org/jira/browse/HBASE-7006
>             Project: HBase
>          Issue Type: New Feature
>          Components: MTTR
>            Reporter: stack
>            Assignee: Jeffrey Zhong
>            Priority: Critical
>             Fix For: 0.98.0, 0.95.1
>
>         Attachments: 7006-addendum-3.txt, hbase-7006-addendum.patch, hbase-7006-combined.patch,
hbase-7006-combined-v1.patch, hbase-7006-combined-v4.patch, hbase-7006-combined-v5.patch,
hbase-7006-combined-v6.patch, hbase-7006-combined-v7.patch, hbase-7006-combined-v8.patch,
hbase-7006-combined-v9.patch, LogSplitting Comparison.pdf, ProposaltoimprovelogsplittingprocessregardingtoHBASE-7006-v2.pdf
>
>
> Just saw interesting issue where a cluster went down  hard and 30 nodes had 1700 WALs
to replay.  Replay took almost an hour.  It looks like it could run faster that much of the
time is spent zk'ing and nn'ing.
> Putting in 0.96 so it gets a look at least.  Can always punt.

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