[jira] Commented: (HBASE-2941) port HADOOP-6713 - threading scalability for RPC reads - to HBase

["ryan rawson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-2941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12904784#action_12904784 ] 

ryan rawson commented on HBASE-2941:
------------------------------------

Doing some testing on this, using ycsb as a read load generator (gets), using 50 and 200 threads client side, with the patch from HBASE-2939, I am showing all sorts of great improvements:

- the latency curve slides inwards
- the average request time goes down from .4-.8 ms

Overall it's a huge huge win.  I'll attach the XLSX that has graphs and data from my runs - 8 sheets in total.

> 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
>             Fix For: 0.90.0
>
>
> 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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