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
