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Date: Mon, 30 Nov 2015 10:33:17 +0100
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Subject: Re: High get/scan rates on HBase table even if no readers are on
From: Samir Ahmic <ahmic.samir@gmail.com>
To: user@hbase.apache.org
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HI Mukesh,
Did you try to change logging levels in in
$HBASE_CONF_DIR/log4j.properties?  You can enable  this lines to get debug
info in lour logs:

# Enable this to get detailed connection error/retry logging.
#
log4j.logger.org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation=TRACE
# Uncomment this line to enable tracing on _every_ RPC call (this can be a
lot of output)
#log4j.logger.org.apache.hadoop.ipc.HBaseServer.trace=DEBUG

Regards
Samir

On Mon, Nov 30, 2015 at 10:14 AM, Mukesh Jha <me.mukesh.jha@gmail.com>
wrote:

> Any clue guys?
>
> Because of this I am getting a lot of slow scans.
>
> From HBase Regionserver logs
>
> hbase5.usdc2.cloud.com 2015-11-30 09:10:53,592 WARN
> org.apache.hadoop.ipc.RpcServer: (responseTooSlow):
>
> {"processingtimems":10630,"call":"Scan(org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ScanRequest)","client":"
> 10.193.150.127:37070
>
> ","starttimems":1448874642962,"queuetimems":1,"class":"HRegionServer","responsesize":12,"method":"Scan"}
>
>
> On Fri, Nov 27, 2015 at 11:41 PM, Mukesh Jha <me.mukesh.jha@gmail.com>
> wrote:
>
> > I'm working with cloudera hbase v0.98, my HBase table has ~5k regions.
> >
> > From the cloudera UI charts i see a lot of get & scan operations active
> on
> > my table even after i shut down all the reader applications.
> >
> > I'm suspecting that this is impacting my scan performance.
> >
> > So I'd like to know if there is a way by which i can identify the hosts
> > calling  these get/scan operations? I tried netstat and similar linux
> > commands without much luck.
> >
>
>
>
> --
>
>
> Thanks & Regards,
>
> *Mukesh Jha <me.mukesh.jha@gmail.com>*
>

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