[jira] [Commented] (HBASE-11568) Async WAL replication for region replicas

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-11568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14099265#comment-14099265 ] 

Hadoop QA commented on HBASE-11568:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12662166/hbase-11568_v2.patch
  against trunk revision .
  ATTACHMENT ID: 12662166

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 16 new or modified tests.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of javac compiler warnings.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version 2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number of release audit warnings.

    {color:green}+1 lineLengths{color}.  The patch does not introduce lines longer than 100

  {color:green}+1 site{color}.  The mvn site goal succeeds with this patch.

     {color:red}-1 core tests{color}.  The patch failed these unit tests:
                       org.apache.hadoop.hbase.regionserver.wal.TestLogRollingNoCluster

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/10465//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10465//artifact/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10465//artifact/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10465//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10465//artifact/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10465//artifact/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10465//artifact/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10465//artifact/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10465//artifact/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10465//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/10465//console

This message is automatically generated.

> 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
>
>         Attachments: 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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