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From "Guanghao Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15995) Separate replication WAL reading from shipping
Date Wed, 31 May 2017 01:36:04 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15995?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16030482#comment-16030482

Guanghao Zhang commented on HBASE-15995:

[~vincentpoon] would you consider putting up a patch also for branch-1? [~tedyu] [~apurtell]
This improvement seems not break any compatibility, so this should be merged into branch-1,
too? Thanks.

> Separate replication WAL reading from shipping
> ----------------------------------------------
>                 Key: HBASE-15995
>                 URL: https://issues.apache.org/jira/browse/HBASE-15995
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Replication
>    Affects Versions: 2.0.0
>            Reporter: Vincent Poon
>            Assignee: Vincent Poon
>             Fix For: 2.0.0
>         Attachments: HBASE-15995.master.v1.patch, HBASE-15995.master.v2.patch, HBASE-15995.master.v3.patch,
HBASE-15995.master.v4.patch, HBASE-15995.master.v6.patch, HBASE-15995.master.v7.patch, replicationV1_100ms_delay.png,
> Currently ReplicationSource reads edits from the WAL and ships them in the same thread.
> By breaking out the reading from the shipping, we can introduce greater parallelism and
lay the foundation for further refactoring to a pipelined, streaming model.

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