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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10347) HRegionInfo changes for adding replicaId and MetaEditor/MetaReader changes for region replicas
Date Wed, 05 Feb 2014 07:04:09 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13891869#comment-13891869
] 

Hadoop QA commented on HBASE-10347:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12627072/hbase-10347_redo_v6.patch
  against trunk revision .
  ATTACHMENT ID: 12627072

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

    {color:green}+1 tests included{color}.  The patch appears to include 17 new or modified
tests.

    {color:green}+1 hadoop1.0{color}.  The patch compiles against the hadoop 1.0 profile.

    {color:green}+1 hadoop1.1{color}.  The patch compiles against the hadoop 1.1 profile.

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

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

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

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/8601//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8601//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8601//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8601//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8601//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8601//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8601//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8601//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8601//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8601//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/8601//console

This message is automatically generated.

> HRegionInfo changes for adding replicaId and MetaEditor/MetaReader changes for region
replicas
> ----------------------------------------------------------------------------------------------
>
>                 Key: HBASE-10347
>                 URL: https://issues.apache.org/jira/browse/HBASE-10347
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Region Assignment
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 0.99.0
>
>         Attachments: hbase-10347_redo_v4.patch, hbase-10347_redo_v5.patch, hbase-10347_redo_v6.patch
>
>
> As per parent jira, the cleanest way to add region replicas we think is to actually create
one more region per replica per primary region. So for example, if a table has 10 regions
with replication = 3, the table would indeed be created with 30 regions. These regions will
be handled and assigned individually for AM purposes. 
> We can add replicaId to HRegionInfo to indicate the replicaId, and use this to differentiate
different replicas of the same region. So, primary replica would have replicaId = 0, and the
others will have replicaId > 0. 
> These replicas will share the same regionId prefix, but differ in an appended replicaId.
The primary will not contain the replicaId so that no changes would be needed for existing
tables. 
> In meta, the replica regions are kept in the same row as the primary ( so for above example,
there will be 10 rows in meta). The servers for the replicas are kept in columns like "server+replicaId".




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