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From Rajeshkumar J <rajeshkumarit8...@gmail.com>
Subject Re: Lease exception
Date Wed, 21 Dec 2016 16:09:07 GMT
I am using hbase version 1.1.1
Also I didn't understand something here. Whenever a scanner.next() is
called it needs to return rows(based on caching value) within leasing
period or else scanner client will be closed eventually throwing this
exception. Correct me as I didn't get the clear understanding of this issue

On Wed, Dec 21, 2016 at 7:31 PM, Ted Yu <yuzhihong@gmail.com> wrote:

> Which hbase release are you using ?
>
> There is heartbeat support when scanning.
> Looks like the version you use doesn't have this support.
>
> Cheers
>
> > On Dec 21, 2016, at 4:02 AM, Rajeshkumar J <rajeshkumarit8292@gmail.com>
> wrote:
> >
> > Hi,
> >
> >   Thanks for the reply. I have properties as below
> >
> > <property>
> >    <name>hbase.regionserver.lease.period</name>
> >    <value>900000</value>
> >  </property>
> >  <property>
> >    <name>hbase.rpc.timeout</name>
> >    <value>900000>/value>
> >  </property>
> >
> >
> > Correct me If I am wrong.
> >
> > I know hbase.regionserver.lease.period, which says how long a scanner
> > lives between calls to scanner.next().
> >
> > As far as I understand when scanner.next() is called it will fetch no
> > of rows as in *hbase.client.scanner.caching. *When this fetching
> > process takes more than lease period it will close the scanner object.
> > so this exception occuring?
> >
> >
> > Thanks,
> >
> > Rajeshkumar J
> >
> >
> >
> > On Wed, Dec 21, 2016 at 5:07 PM, Richard Startin <
> richardstartin@outlook.com
> >> wrote:
> >
> >> It means your lease on a region server has expired during a call to
> >> resultscanner.next(). This happens on a slow call to next(). You can
> either
> >> embrace it or "fix" it by making sure hbase.rpc.timeout exceeds
> >> hbase.regionserver.lease.period.
> >>
> >> https://richardstartin.com
> >>
> >> On 21 Dec 2016, at 11:30, Rajeshkumar J <rajeshkumarit8292@gmail.com<
> >> mailto:rajeshkumarit8292@gmail.com>> wrote:
> >>
> >> Hi,
> >>
> >>  I have faced below issue in our production cluster
> >>
> >> org.apache.hadoop.hbase.regionserver.LeaseException:
> >> org.apache.hadoop.hbase.regionserver.LeaseException: lease '166881'
> does
> >> not exist
> >> at org.apache.hadoop.hbase.regionserver.Leases.
> >> removeLease(Leases.java:221)
> >> at org.apache.hadoop.hbase.regionserver.Leases.
> >> cancelLease(Leases.java:206)
> >> at
> >> org.apache.hadoop.hbase.regionserver.RSRpcServices.
> >> scan(RSRpcServices.java:2491)
> >> at
> >> org.apache.hadoop.hbase.protobuf.generated.
> ClientProtos$ClientService$2.
> >> callBlockingMethod(ClientProtos.java:32205)
> >> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2114)
> >> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:101)
> >> at
> >> org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(
> RpcExecutor.java:130)
> >> at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:107)
> >> at java.lang.Thread.run(Thread.java:744)
> >>
> >>
> >> Can any one explain what is lease exception
> >>
> >> Thanks,
> >> Rajeshkumar J
> >>
>

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