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https://issues.apache.org/jira/browse/HBASE-20138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16387549#comment-16387549
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Duo Zhang commented on HBASE-20138:
-----------------------------------

[~openinx] FYI.

> Find a way to deal with the conflicts when updating replication position
> ------------------------------------------------------------------------
>
>                 Key: HBASE-20138
>                 URL: https://issues.apache.org/jira/browse/HBASE-20138
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Duo Zhang
>            Priority: Major
>
> For now if a table is not created with SERIAL_REPLICATION_SCOPE and later 
> converted to SERIAL_REPLICATION_SCOPE , then we may have multiple replication 
> sources which replicate the different ranges for the same region and update 
> the queue storage concurrently. This will cause problem if the lower range 
> finish at last since the replication position will be wrong...
> Need to find a way to deal with this.



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