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Re: Warning messages in hbase logs
Hi Kiru,
Can you please elaborate on this ?
On Mon, Oct 21, 2013 at 5:30 PM, Vimal Jain <[EMAIL PROTECTED]> wrote:

> 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]>

Thanks and Regards,
Vimal Jain