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Hadoop QA commented on HBASE-10873: ----------------------------------- {color:green}+1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12640327/hbase-10873_v2.patch against trunk revision . ATTACHMENT ID: 12640327 {color:green}+1 @author{color}. The patch does not contain any @author tags. {color:green}+1 tests included{color}. The patch appears to include 12 new or modified tests. {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:green}+1 core tests{color}. The patch passed unit tests in . Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/9297//testReport/ Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9297//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9297//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-thrift.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9297//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9297//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9297//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9297//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9297//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9297//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/9297//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/9297//console This message is automatically generated. > Control number of regions assigned to backup masters > ---------------------------------------------------- > > Key: HBASE-10873 > URL: https://issues.apache.org/jira/browse/HBASE-10873 > Project: HBase > Issue Type: Improvement > Components: Balancer > Reporter: Jimmy Xiang > Assignee: Jimmy Xiang > Fix For: 0.99.0 > > Attachments: hbase-10873.patch, hbase-10873_v2.patch > > > By default, a backup master is treated just like another regionserver. So it > can host as many regions as other regionserver does. When the backup master > becomes the active one, region balancer needs to move those user regions on > this master to other region servers. To minimize the impact, it's better not > to assign too many regions on backup masters. It may not be good to leave the > backup masters idle and not host any region either. > We should make this adjustable so that users can control how many regions to > assign to each backup master. -- This message was sent by Atlassian JIRA (v6.2#6252)