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https://issues.apache.org/jira/browse/HBASE-8160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13609434#comment-13609434
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Jimmy Xiang commented on HBASE-8160:
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In 0.94, ServiceException is not introduced. #move throws
UnknownRegionException, that's why it wraps with the UnknownRegionException. I
thought about changing it to IOException. However, I didn't do that in case
any compatibility concern. I was thinking about changing it to
ServiceException in the trunk version, but probably will do in a separate issue.
> HMaster#move doesn't check if master initialized
> ------------------------------------------------
>
> Key: HBASE-8160
> URL: https://issues.apache.org/jira/browse/HBASE-8160
> Project: HBase
> Issue Type: Bug
> Components: master
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Priority: Trivial
> Fix For: 0.95.0, 0.98.0, 0.94.7
>
> Attachments: 0.94-8160.patch, 0.94-8160_v2.patch, trunk-8160.patch
>
>
> Before the master is initialized, if a move request comes in, it could cause
> the master to abort, if the region was already in transition before the
> master started up.
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