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Re: Warning messages in hbase logs
Hi Kiru,
Thanks for the reply.
My understanding is not very clear  with respect to these warning messages
in region server logs.
When i read documentation , it says its related to slow query logs.
So is it a issue in earlier versions of hbase and is fixed in 0.96 or is it
an issue in my configuration and i have to set some parameters to prevent
this?
Please help in understanding the exact issue.
On Sat, Oct 19, 2013 at 3:31 AM, Kiru Pakkirisamy <[EMAIL PROTECTED]
> wrote:

> 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):
Thanks and Regards,
Vimal Jain