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HBase >> mail # user >> Frequent scan time outs in multiple region servers in same time intervals


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Sandeep L 2013-11-14, 10:23
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Jia Wang 2013-11-14, 10:54
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RE: Frequent scan time outs in multiple region servers in same time intervals
Its not a Scan for Map/Reduce.
Internally we are using HBase for one of our application where our application scans data from HBase tables and we use the scan results.Due to regular scan time outs our service getting interrupted.
Thanks,Sandeep.

> Date: Thu, 14 Nov 2013 18:54:28 +0800
> Subject: Re: Frequent scan time outs in multiple region servers in same time intervals
> From: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
>
> Is it a Scan for Map/Reduce? Or it's only a regular scan in which case
> maybe you could consider to set the start and end position of your scan to
> limit the operation.
>
> Thanks
> Ramon
>
>
> On Thu, Nov 14, 2013 at 6:23 PM, Sandeep L <[EMAIL PROTECTED]>wrote:
>
> > Hi,
> > In recent times we are seeing frequent scan time outs in multiple region
> > servers of our production cluster. Due to this our HBase cluster is not
> > responding for 5 to 10 minutes for any queries & that causing huge problem
> > for us.
> > We are getting following error in multiple region servers almost in same
> > time intervals
> > 2013-11-14 00:16:30,178 INFO
> > org.apache.hadoop.hbase.regionserver.HRegionServer: Scanner
> > -8978491571406751432 lease expired on region
> > TableName,news,1383881528749.1e3f228e7a7a5a13d117af309f252c6c
> > This error is occurring on multiple tables.
> > Can suggest us what could be the cause and how to resolve the issue.
> >
> > Thanks,Sandeep.
     
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Ted Yu 2013-11-14, 14:43
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Sandeep L 2013-11-15, 04:11