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From "HBase Review Board (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2941) port HADOOP-6713 - threading scalability for RPC reads - to HBase
Date Tue, 14 Sep 2010 21:31:33 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12909463#action_12909463
] 

HBase Review Board commented on HBASE-2941:
-------------------------------------------

Message from: "Ryan Rawson" <ryanobjc@gmail.com>

-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
http://review.cloudera.org/r/752/
-----------------------------------------------------------

(Updated 2010-09-14 14:19:53.985785)


Review request for hbase.


Changes
-------

use shutdownNow() to interrupt the reader threads so the server will cleanly shut down.


Summary
-------

HBASE-2941 - multithreaded read for server rpc, port of HADOOP-6713


This addresses bug HBASE-2941.
    http://issues.apache.org/jira/browse/HBASE-2941


Diffs (updated)
-----

  trunk/src/main/java/org/apache/hadoop/hbase/ipc/HBaseServer.java 997098 

Diff: http://review.cloudera.org/r/752/diff


Testing
-------

see jira for performance spreadsheet


Thanks,

Ryan




> port HADOOP-6713 - threading scalability for RPC reads - to HBase
> -----------------------------------------------------------------
>
>                 Key: HBASE-2941
>                 URL: https://issues.apache.org/jira/browse/HBASE-2941
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.20.6, 0.89.20100621
>            Reporter: ryan rawson
>            Assignee: ryan rawson
>             Fix For: 0.90.0
>
>         Attachments: HBASE-2941.patch, HBASE-2941.txt, HBASE-2941.xlsx, HBaseServer.java,
Rplot001.png
>
>
> HADOOP-6713 has  patch to fix the read scalability of hadoop rpc.  Right now a single
thread accepts() then receives the RPC payload for every single RPC in hbase. Including object
creation, writable deserialization, etc.
> Apply the patch from that issue to our own forked HBaseRPC code.

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