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From "stack (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4508) Backport HBASE-3777 to 0.90 branch
Date Wed, 26 Oct 2011 05:31:32 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13135724#comment-13135724
] 

stack commented on HBASE-4508:
------------------------------

I just tried this patch against the tip of 0.90.  On a cluster loaded with regions, I brought
down one server, put in place a jar with this patch in place and then brought it back up moving
regions back on to the server.  A client that was not patched was able to talk to this server.
 It looks to me like this patch is safe to backport.
                
> Backport HBASE-3777 to 0.90 branch
> ----------------------------------
>
>                 Key: HBASE-4508
>                 URL: https://issues.apache.org/jira/browse/HBASE-4508
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: Bright Fulton
>             Fix For: 0.90.5
>
>         Attachments: HBASE-4508.v1.patch, HBASE-4508.v2.patch, HBASE-4508.v3.patch, HBASE-4508.v4.git.patch,
HBASE-4508.v4.patch, HBASE-4508.v5.patch
>
>
> See discussion here: http://search-hadoop.com/m/MJBId1aazTR1/backporting+HBASE-3777+to+0.90&subj=backporting+HBASE+3777+to+0+90
> Rocketfuel has been running 0.90.3 with HBASE-3777 since its resolution.
> They have 10 RS nodes , 1 Master and 1 Zookeeper
> Live writes and reads but super heavy on reads. Cache hit is pretty high.
> The qps on one of their data centers is 50K.

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