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https://issues.apache.org/jira/browse/HBASE-9184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13737719#comment-13737719
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Hudson commented on HBASE-9184:
-------------------------------
FAILURE: Integrated in HBase-TRUNK #4376 (See
[https://builds.apache.org/job/HBase-TRUNK/4376/])
HBASE-9184 Ignore zk assign event if region is not known in transition (jxiang:
rev 1513294)
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
*
/hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestAssignmentManager.java
*
/hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestAssignmentManagerOnCluster.java
> Ignore zk assign event if region is not known in transition
> -----------------------------------------------------------
>
> Key: HBASE-9184
> URL: https://issues.apache.org/jira/browse/HBASE-9184
> Project: HBase
> Issue Type: Bug
> Components: Region Assignment
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Fix For: 0.98.0, 0.95.2
>
> Attachments: trunk-9184.patch
>
>
> This is a follow up of HBASE-9161. Currently, if a region is in transition,
> we ignore any unexpected zk assign event and log a warning. For example, a zk
> closing event will be ignored if the region is pending open actually.
> However, if the region is not in transition, we will accept such events. For
> events not related to split/merge, we should ignore them and log a warning
> too, to tighten up the region state transition. During normal operation,
> this (ensuring region is in transition before accepting transition related
> events) is fine. During master failover, this is fine as long as we don't do
> region transition bypass ZK. We should also make sure to watch assignment
> znodes after user region states are recovered, so that we don't log many such
> warnings.
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