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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11511) Write flush events to WAL
Date Wed, 16 Jul 2014 04:15:05 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11511?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14063108#comment-14063108
] 

Hudson commented on HBASE-11511:
--------------------------------

FAILURE: Integrated in HBase-TRUNK #5309 (See [https://builds.apache.org/job/HBase-TRUNK/5309/])
HBASE-11511 Write flush events to WAL (ADDENDUM to fix flaky test) (enis: rev 58727343f2b7ac4093828ca645084901d7ca568c)
* hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegion.java


> Write flush events to WAL
> -------------------------
>
>                 Key: HBASE-11511
>                 URL: https://issues.apache.org/jira/browse/HBASE-11511
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 0.99.0, 2.0.0
>
>         Attachments: hbase-11511_addendum.patch, hbase-11511_v1.patch, hbase-11511_v1.patch,
hbase-11511_v2.patch, hbase-11511_v3.patch, hbase-11511_v4.patch
>
>
> We used to write COMPLETE_FLUSH event to WAL until it got removed in 0.96 in issue HBASE-7329.

> For secondary region replicas, it is important to share the data files with the primary
region. So we should reintroduce the flush wal markers so that the secondary region replicas
can pick up the newly flushed files from the WAL and start serving data from those. 
> A design doc which explains the context a bit better can be found in HBASE-11183. 



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