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From Raghava Mutharaju <m.vijayaragh...@gmail.com>
Subject Re: Scanner Exception
Date Fri, 04 Jun 2010 06:38:37 GMT
Nope, it doesn't.

After recompiling, I just changed the $HBASE_HOME to the newly created build
folder. I think that is the only change required?

Regards,
Raghava.

On Fri, Jun 4, 2010 at 1:46 AM, Stack <stack@duboce.net> wrote:

> Does your filter start working if you add it in here w/ a code of its
> own and recompile and relaunch?
> St.Ack
>
> On Thu, Jun 3, 2010 at 10:40 PM, Raghava Mutharaju
> <m.vijayaraghava@gmail.com> wrote:
> > I found the codes in HBaseObjectWritable file and saw the jira too :).
> > This change only effects the performance isn't it (particularly for small
> > cell data), not the actual functionality.
> >
> > Regards,
> > Raghava.
> >
> > On Fri, Jun 4, 2010 at 1:18 AM, Stack <stack@duboce.net> wrote:
> >
> >> Look in that java file and see how all extant filters are mentioned
> >> and assigned a code.  You need to add yours too.
> >> St.Ack
> >>
> >> On Thu, Jun 3, 2010 at 10:14 PM, Raghava Mutharaju
> >> <m.vijayaraghava@gmail.com> wrote:
> >> > Thank you Angus and Guilherme :). I added the filter jar to $HBase/lib
> >> and
> >> > the exceptions went away. Although, there now the filter doesn't
> return
> >> any
> >> > rows - I have to check this out.
> >> >
> >> > Stack:
> >> >    About HBaseObjectWritable, I have used it in serializing(write()
> >> method)
> >> > and deserializing(readFields() method) as was done in other existing
> >> > filters. Are you referring to this or something else? What does adding
> it
> >> to
> >> > HBaseObjectWritable mean?
> >> >
> >> > Thank you again.
> >> >
> >> > Regards,
> >> > Raghava.
> >> >
> >> > On Fri, Jun 4, 2010 at 1:04 AM, Stack <stack@duboce.net> wrote:
> >> >
> >> >> You have to add it to HBaseObjectWritable too, IIRC.  See how other
> >> >> filters are mentioned in there (The need to do this has to go away.
>  I
> >> >> filed HBASE-2666).
> >> >> St.Ack
> >> >>
> >> >> On Thu, Jun 3, 2010 at 9:01 PM, Angus He <angushe@gmail.com>
wrote:
> >> >> > Even if HBase is running in standalone mode,  the scan operation
is
> >> >> > still running in another jvm, to be specific, in HMaster process.
> >> >> >
> >> >> > So you still have to either put the custom filter jar in $HBASE/lib
> or
> >> >> > set up the $HBASE/conf/hbase-env.sh properly.
> >> >> >
> >> >> > On Fri, Jun 4, 2010 at 4:37 AM, Raghava Mutharaju
> >> >> > <m.vijayaraghava@gmail.com> wrote:
> >> >> >> The custom filter doesn't need any additional jars.
> >> >> >> Another point I forgot to mention is that, I am running this
on a
> >> single
> >> >> >> node (laptop) to test my filter.
> >> >> >>
> >> >> >> Regards,
> >> >> >> Raghava.
> >> >> >>
> >> >> >> On Thu, Jun 3, 2010 at 4:23 PM, Guilherme Germoglio <
> >> >> germoglio@gmail.com>wrote:
> >> >> >>
> >> >> >>> please check if the jars needed for your custom filter
> >> implementation
> >> >> are
> >> >> >>> in
> >> >> >>> hbase's classpath
> >> >> >>>
> >> >> >>> On Thu, Jun 3, 2010 at 5:16 PM, Raghava Mutharaju <
> >> >> >>> m.vijayaraghava@gmail.com
> >> >> >>> > wrote:
> >> >> >>>
> >> >> >>> > Hi all,
> >> >> >>> >
> >> >> >>> >      I wrote a custom filter and used it with scan.
I am
> getting
> >> the
> >> >> >>> > following exceptions. If I use any built-in filters,
it works
> >> fine. I
> >> >> >>> > searched around and one of the suggestions was to
increase the
> >> lease
> >> >> >>> > timeout. Since it works fine for built-in filters,
I am
> assuming
> >> that
> >> >> >>> this
> >> >> >>> > is not the case. Is it that there is something wrong
with my
> >> filter
> >> >> >>> > implementation?
> >> >> >>> >
> >> >> >>> > Regards,
> >> >> >>> > Raghava.
> >> >> >>> >
> >> >> >>> > Master log:
> >> >> >>> >
> >> >> >>> > org.apache.hadoop.hbase.UnknownScannerException:
Name: -1
> >> >> >>> >        at
> >> >> >>> >
> >> >> >>>
> >> >>
> >>
> org.apache.hadoop.hbase.regionserver.HRegionServer.next(HRegionServer.java:1889)
> >> >> >>> >        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> >> Method)
> >> >> >>> >
> >> >> >>> >        at
> >> >> >>> >
> >> >> >>>
> >> >>
> >>
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> >> >> >>> >        at
> >> >> >>> >
> >> >> >>>
> >> >>
> >>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >> >> >>> >        at java.lang.reflect.Method.invoke(Method.java:597)
> >> >> >>> >
> >> >> >>> >        at
> >> >> >>> >
> >> org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:657)
> >> >> >>> >        at
> >> >> >>> >
> >> >>
> >>
> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:915)
> >> >> >>> > 2010-06-03 16:02:10,775 INFO org.apache.hadoop.ipc.HBaseServer:
> >> IPC
> >> >> >>> > Server handler 9 on 60770, call next(-1, 1) from
> >> >> 130.108.56.225:61091:
> >> >> >>> > error: org.apache.hadoop.hbase.UnknownScannerException:
Name:
> -1
> >> >> >>> >
> >> >> >>> >
> >> >> >>> > Console:
> >> >> >>> >
> >> >> >>> > Exception in thread "main"
> >> >> >>> > org.apache.hadoop.hbase.client.RetriesExhaustedException:
> Trying
> >> to
> >> >> >>> contact
> >> >> >>> > region server 130.108.56.225:60770 for region
> >> table1,,1274648045785,
> >> >> row
> >> >> >>> > '',
> >> >> >>> > but failed after 10 attempts.
> >> >> >>> > Exceptions:
> >> >> >>> > java.io.IOException: Call to /130.108.56.225:60770
failed on
> >> local
> >> >> >>> > exception: java.io.EOFException
> >> >> >>> > java.io.IOException: Call to /130.108.56.225:60770
failed on
> >> local
> >> >> >>> > exception: java.io.EOFException
> >> >> >>> > java.io.IOException: Call to /130.108.56.225:60770
failed on
> >> local
> >> >> >>> > exception: java.io.EOFException
> >> >> >>> > java.io.IOException: Call to /130.108.56.225:60770
failed on
> >> local
> >> >> >>> > exception: java.io.EOFException
> >> >> >>> > java.io.IOException: Call to /130.108.56.225:60770
failed on
> >> local
> >> >> >>> > exception: java.io.EOFException
> >> >> >>> > java.io.IOException: Call to /130.108.56.225:60770
failed on
> >> local
> >> >> >>> > exception: java.io.EOFException
> >> >> >>> > java.io.IOException: Call to /130.108.56.225:60770
failed on
> >> local
> >> >> >>> > exception: java.io.EOFException
> >> >> >>> > java.io.IOException: Call to /130.108.56.225:60770
failed on
> >> local
> >> >> >>> > exception: java.io.EOFException
> >> >> >>> > java.io.IOException: Call to /130.108.56.225:60770
failed on
> >> local
> >> >> >>> > exception: java.io.EOFException
> >> >> >>> > java.io.IOException: Call to /130.108.56.225:60770
failed on
> >> local
> >> >> >>> > exception: java.io.EOFException
> >> >> >>> >
> >> >> >>> >    at
> >> >> >>> >
> >> >> >>> >
> >> >> >>>
> >> >>
> >>
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getRegionServerWithRetries(HConnectionManager.java:1055)
> >> >> >>> >    at
> >> >> >>> >
> >> >> >>> >
> >> >> >>>
> >> >>
> >>
> org.apache.hadoop.hbase.client.HTable$ClientScanner.nextScanner(HTable.java:2003)
> >> >> >>> >    at
> >> >> >>> >
> >> >> >>> >
> >> >> >>>
> >> >>
> >>
> org.apache.hadoop.hbase.client.HTable$ClientScanner.initialize(HTable.java:1923)
> >> >> >>> >    at
> >> >> org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:403)
> >> >> >>> >    at
> >> >> >>> >
> >> >>
> org.knoesis.reasoning.MR.FilterReadClient.main(FilterReadClient.java:58)
> >> >> >>> >
> >> >> >>> > Line 58 above has a call to getScanner(CustomFilterInstance)
of
> >> >> HTable.
> >> >> >>> >
> >> >> >>>
> >> >> >>>
> >> >> >>>
> >> >> >>> --
> >> >> >>> Guilherme
> >> >> >>>
> >> >> >>> msn: guigermoglio@hotmail.com
> >> >> >>> homepage: http://sites.google.com/site/germoglio/
> >> >> >>>
> >> >> >>
> >> >> >
> >> >> >
> >> >> >
> >> >> > --
> >> >> > Regards
> >> >> > Angus
> >> >> >
> >> >>
> >> >
> >>
> >
>

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