[jira] [Commented] (HBASE-20481) Add a setSerial method to ReplicationEndpoint

["Duo Zhang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-20481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16460966#comment-16460966 ] 

Duo Zhang commented on HBASE-20481:
-----------------------------------

Sorry, just notice that when calling ReplicationEndpoint.init, we pass a Context parameter, which contains a ReplicationPeer field, so the current API is enough to tell the ReplicationEndpoint whether the peer is serial or not...

And for your solution, I think it is too strict. You make everything serial, but actually, we only need the serial guarantee inside a region, for different regions we can replicate them parallelly...

> Add a setSerial method to ReplicationEndpoint
> ---------------------------------------------
>
>                 Key: HBASE-20481
>                 URL: https://issues.apache.org/jira/browse/HBASE-20481
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Duo Zhang
>            Assignee: Zheng Hu
>            Priority: Major
>         Attachments: HBASE-20481.v1.patch
>
>
> When debugging HBASE-20475, [~openinx] found that the HBaseInterClusterReplicationEndpoint may send the entries for the same regions concurrently, which breaks the serial replication.
> As long as we can have multiple ReplicationEndpoint implementation, just fix HBaseInterClusterReplicationEndpoint is not enough, we need to add a setSerial method to ReplicationEndpoint, to tell the implementation that you should keep the order of the entries from the same region.



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