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): > > >{"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, > Vimal Jain > > > > > > -- > Thanks and Regards, > Vimal Jain > > > -- Thanks and Regards, Vimal Jain
