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Re: Warning messages in hbase logs
You probably ran into
[HBASE-6870] - HTable#coprocessorExec always scan the whole table (0.94.8)

Or maybe one of these:

[HBASE-8806] - Row locks are acquired repeatedly in HRegion.doMiniBatchMutation for duplicate rows. (0.94.10)
[HBASE-8639] - Poor performance of htable#getscanner in multithreaded environment due to DNS.getDefaultHost() being called in ScannerCallable#prepare() (0.94.9)
[HBASE-9087] - Handlers being blocked during reads (0.94.11)
-- Lars

 From: Vimal Jain <[EMAIL PROTECTED]>
Cc: Kiru Pakkirisamy <[EMAIL PROTECTED]>
Sent: Wednesday, September 25, 2013 10:01 PM
Subject: Re: Warning messages in hbase logs
I am using  Hadoop version - 1.1.2 , Hbase version - 0.94.7 .

On Thu, Sep 26, 2013 at 9:38 AM, lars hofhansl <[EMAIL PROTECTED]> wrote:

Eh? That should not be the case, we should figure where 0.95.2 is different from 0.94.
>With which version of the 0.94 did you see this?
>-- Lars
>----- Original Message -----
>From: Kiru Pakkirisamy <[EMAIL PROTECTED]>
>Sent: Tuesday, September 24, 2013 9:46 PM
>Subject: Re: Warning messages in hbase logs
>Are you running many concurrent clients ? I had a similar problem when running on 0.94.x and I moved to 0.95.2 for this reason (see HBASE-9410)

>- kiru
>From: Vimal Jain <[EMAIL PROTECTED]>
>Sent: Tuesday, September 24, 2013 9:36 PM
>Subject: Warning messages in hbase logs
>I am seeing some warning message in Hregion log file  for quite a few days.
>The message is :
>*WARN org.apache.hadoop.ipc.HBaseServer: (responseTooSlow):
>rpc version=1, client version=29, methodsFingerPrint=-1368823753","client":"
>Can someone please help in understanding what this warning message is ?
>Thanks and Regards,
>Vimal Jain

Thanks and Regards,
Vimal Jain