Duo Zhang updated HBASE-20148:
    Assignee: Duo Zhang
      Status: Patch Available  (was: Open)

Good news is that we do not need too much work to move the option to peer 
config. The implementation of WALReader can still be optimized. Can do it in a 
follow on issue.

> Make serial replication as a option for a peer instead of a table
> -----------------------------------------------------------------
>                 Key: HBASE-20148
>                 URL: https://issues.apache.org/jira/browse/HBASE-20148
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>            Priority: Major
>         Attachments: HBASE-20148.patch
> Discussed with [~zghaobac] and [~openinx] offline, HBASE-20147 can only be 
> solved by adding new stages when creating a new replication peer. It will 
> also effect he processing even if you do not have any table with serial 
> replication. And also, the new logic introduced in ReplicationSource related 
> classes will also be executed even if you do not have serial replication 
> tables.
> So, we think that it maybe a better choice to move the option to 
> ReplicationPeerConfig. Since if there is one table in the peer requires 
> serial replication, then all the tables in this peer will be automatically 
> 'serial' since the wal for these tables are mixed with the one which requires 
> serial replication.

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