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https://issues.apache.org/jira/browse/HBASE-11992?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14136399#comment-14136399
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Enis Soztutar commented on HBASE-11992:
---------------------------------------

bq. I think it's necessary to document that customized replication endpoints 
are not supported in mixed version deployments, the fleet must be up to date 
before customized peer settings can be put in place
I think this is reasonable. Usually, admins should finish for any rolling 
upgrade to finish before using a particular feature. 

> Backport HBASE-11367 (Pluggable replication endpoint) to 0.98
> -------------------------------------------------------------
>
>                 Key: HBASE-11992
>                 URL: https://issues.apache.org/jira/browse/HBASE-11992
>             Project: HBase
>          Issue Type: Task
>            Reporter: Andrew Purtell
>            Assignee: ramkrishna.s.vasudevan
>         Attachments: hbase-11367_0.98.patch
>
>
> ReplicationSource tails the logs for each peer. HBASE-11367 introduces 
> ReplicationEndpoint which is customizable per peer. ReplicationEndpoint is 
> run in the same RS process and instantiated per replication peer per region 
> server. Implementations of this interface handle the actual shipping of WAL 
> edits to the remote cluster.
> This issue is for backporting HBASE-11367 to 0.98.



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