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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5699) Run with > 1 WAL in HRegionServer
Date Thu, 07 Aug 2014 16:36:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14089418#comment-14089418
] 

Anoop Sam John commented on HBASE-5699:
---------------------------------------

My idea is like to make a multi WAL impl which helps write throughput as well as MTTR.  The
MTTR when we have the distributed log replay mode.  If we can make sure to have region grouping
policy in selecting the regions for a WAL in multi WAL area,  we can try max to allocate all
those regions to same RS on crash.  So this RS can read this WAL and replay locally.  The
distributed log replay  batch calls has not to go over RPC ..   Lots of Qs and corner cases
there.  But we can discuss more on and try to make it better.

> Run with > 1 WAL in HRegionServer
> ---------------------------------
>
>                 Key: HBASE-5699
>                 URL: https://issues.apache.org/jira/browse/HBASE-5699
>             Project: HBase
>          Issue Type: Improvement
>          Components: Performance
>            Reporter: binlijin
>            Assignee: Li Pi
>            Priority: Critical
>         Attachments: PerfHbase.txt
>
>




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