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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9696) Master recovery ignores online merge znode
Date Fri, 25 Oct 2013 20:21:40 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13805656#comment-13805656
] 

Hudson commented on HBASE-9696:
-------------------------------

FAILURE: Integrated in hbase-0.96 #161 (See [https://builds.apache.org/job/hbase-0.96/161/])
HBASE-9748 Address outstanding comments raised for HBASE-9696 (jxiang: rev 1535789)
* /hbase/branches/0.96/hbase-client/src/main/java/org/apache/hadoop/hbase/master/RegionState.java
* /hbase/branches/0.96/hbase-client/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKAssign.java
* /hbase/branches/0.96/hbase-it/src/test/java/org/apache/hadoop/hbase/test/IntegrationTestBigLinkedList.java
* /hbase/branches/0.96/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
* /hbase/branches/0.96/hbase-server/src/main/java/org/apache/hadoop/hbase/master/BulkReOpen.java
* /hbase/branches/0.96/hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
* /hbase/branches/0.96/hbase-server/src/main/java/org/apache/hadoop/hbase/master/RegionStates.java
* /hbase/branches/0.96/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/DeleteTableHandler.java
* /hbase/branches/0.96/hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/ServerShutdownHandler.java
* /hbase/branches/0.96/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionMergeTransaction.java
* /hbase/branches/0.96/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/SplitTransaction.java
* /hbase/branches/0.96/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestAssignmentManager.java
* /hbase/branches/0.96/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMasterFailover.java
* /hbase/branches/0.96/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionServerNoMaster.java
* /hbase/branches/0.96/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestSplitTransactionOnCluster.java
* /hbase/branches/0.96/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/handler/TestCloseRegionHandler.java


> Master recovery ignores online merge znode
> ------------------------------------------
>
>                 Key: HBASE-9696
>                 URL: https://issues.apache.org/jira/browse/HBASE-9696
>             Project: HBase
>          Issue Type: Bug
>          Components: master, Region Assignment
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>             Fix For: 0.98.0, 0.96.0
>
>         Attachments: 0.96-9696_v3.2.patch, 0.96-9696_v3.3.patch, trunk-9696.patch, trunk-9696_v2.1.patch,
trunk-9696_v2.patch, trunk-9696_v3.1.patch, trunk-9696_v3.2.patch, trunk-9696_v3.3.patch,
trunk-9696_v3.patch, trunk-9696_v3.patch
>
>
> The online merge znode uses the new region to be created.  When master restarts, the
new region is still unknown if the merging is not completed. Therefore the znode is ignored,
which should not.  That means the two merging regions could be moved around.  This could cause
some data loss if we are not luck.



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