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https://issues.apache.org/jira/browse/HBASE-23889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17044191#comment-17044191
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Bharath Vissapragada commented on HBASE-23889:
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Also, I suggest looking at {{AlwaysStandByHMaster}} for your tests, if you want
to simulate a no-active-hmaster situation..
{{StartMiniClusterOption.Builder#numAlwaysStandByMasters()}}
> Switch back to ZKConnectionRegistry by default at least in test
> ---------------------------------------------------------------
>
> Key: HBASE-23889
> URL: https://issues.apache.org/jira/browse/HBASE-23889
> Project: HBase
> Issue Type: Bug
> Components: Client, rpc, test
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
>
> For now, MasterRegistry can not deal with master restart, as it can not load
> the new master address automatically.
> I see there is a invalidateConnection method in HBaseTestingUtilities but it
> needs a very big refactoring to make all the UTs work like this.
> So here I suggest we switch back to ZKConnectionRegistry by default, and open
> a new feature branch to finish the TODOs and the refactoring on UTs.
> As now it is already a big problem for me as I want to merge a feature branch
> back to master but the state of UTs are a mess.
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