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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11568) Async WAL replication for region replicas
Date Fri, 06 Feb 2015 19:45:36 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14309745#comment-14309745

Hudson commented on HBASE-11568:

FAILURE: Integrated in HBase-1.1 #150 (See [https://builds.apache.org/job/HBase-1.1/150/])
HBASE-11568. Addendum to add a file that I missed earlier. (ddas: rev 78c50af3ec2f98053a4c736183b15499e574c113)
* hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionAdminServiceCallable.java

> Async WAL replication for region replicas
> -----------------------------------------
>                 Key: HBASE-11568
>                 URL: https://issues.apache.org/jira/browse/HBASE-11568
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 2.0.0, 1.1.0
>         Attachments: 11568-2-branch-1.txt, 11568-branch-1.txt, hbase-11568_v2.patch,
> As mentioned in parent issue, and design docs for phase-1 (HBASE-10070) and Phase-2 (HBASE-11183),
implement asynchronous WAL replication from the WAL files of the primary region to the secondary
region replicas. 
> The WAL replication will build upon the pluggable replication framework introduced in
HBASE-11367, and the distributed WAL replay. 
> Upon having some experience with the patch, we changed the design so that there is only
one replication queue for doing the async wal replication to secondary replicas rather than
having a queue per region replica. This is due to the fact that, we do not want to tail the
logs of every region server for a single region replica. 
> Handling of flushes/compactions and memstore accounting will be handled in other subtasks.

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