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Re: Warning messages in hbase logs
Vimal,
Maybe you should try running the test case for HBASE-9410 (with some modifications) and report back.
This way Lars/committers/contributors can work on this bug with confirmation.
The test case makes a coprocessor call (which does nothing) on a table with regions in all the region servers.
Feel free to send me any email in this regards. 
 
Regards,
- kiru
Kiru Pakkirisamy | webcloudtech.wordpress.com
________________________________
 From: Vimal Jain <[EMAIL PROTECTED]>
To: Himanshu Vashishtha <[EMAIL PROTECTED]>
Cc: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>; Kiru Pakkirisamy <[EMAIL PROTECTED]>; lars hofhansl <[EMAIL PROTECTED]>
Sent: Thursday, October 17, 2013 9:39 PM
Subject: Re: Warning messages in hbase logs
 
Hi.
I am still getting these warnings in region server logs.
I am still using hbase 0.94.7.
Is there any impact of these warning messages ?
On Thu, Sep 26, 2013 at 11:19 PM, Himanshu Vashishtha <[EMAIL PROTECTED]> wrote:
>
>
>
>
>On Thu, Sep 26, 2013 at 4:07 AM, Kiru Pakkirisamy <[EMAIL PROTECTED]> wrote:
>
>I was on 0.94.11 and still got the same msgs as Vimal. 
>>Ultimately, I moved to 0.95.2.
>>

>You know it is a dev release, right? 
>
>
>
>
>Regards,
>>- kiru
>>
>>
>>Kiru Pakkirisamy | webcloudtech.wordpress.com
>>
>>
>>
>>________________________________
>> From: lars hofhansl <[EMAIL PROTECTED]>
>>To: Vimal Jain <[EMAIL PROTECTED]>; "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
>>Cc: Kiru Pakkirisamy <[EMAIL PROTECTED]>
>>Sent: Wednesday, September 25, 2013 9:46 PM
>>
>>Subject: 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]>
>>To: [EMAIL PROTECTED]; lars hofhansl <[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]>
>>>To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
>>>Cc:
>>>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)
>>> 
>>>Regards,
>>>- kiru
>>>
>>>
>>>________________________________
>>>From: Vimal Jain <[EMAIL PROTECTED]>
>>>To: [EMAIL PROTECTED]
>>>Sent: Tuesday, September 24, 2013 9:36 PM
>>>Subject: Warning messages in hbase logs
>>>
>>>
>>>Hi,
>>>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):
>>>{"processingtimems":12994,"call":"multi(org.apache.hadoop.hbase.client.MultiAction@602cdaf7),
>>>rpc version=1, client version=29, methodsFingerPrint=-1368823753","client":"
>>>192.168.20.31:42206
>>>","starttimems":1380057021850,"queuetimems":0,"class":"HRegionServer","responsesize":0,"method":"multi"}
>>>*
>>>
>>>
>>>Can someone please help in understanding what this warning message is ?
>>>
>>>--
>>>Thanks and Regards,
>>>Vimal Jain
>>>
>>
>>
>>--
>>
>>Thanks and Regards,

Thanks and Regards,
Vimal Jain