Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
HBase >> mail # user >> Unable to add co-processor to table through HBase api


Copy link to this message
-
RE: Unable to add co-processor to table through HBase api
Do let me know if you are stuck up.  May be I did not get your actual
problem.  

All the best.

Regards
Ram

> -----Original Message-----
> From: anil gupta [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, October 17, 2012 11:34 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Unable to add co-processor to table through HBase api
>
> Hi Ram,
>
> The table exists and I don't get any error while running the program(i
> would get an error if the table did not exist). I am running a
> distributed
> cluster.
>
> Tried following additional ways also:
>
>    1. I tried loading the AggregationImplementation coproc.
>    2. I also tried adding the coprocs while the table is enabled.
>
>
> Also had a look at the JUnit test cases and could not find any
> difference.
>
> I am going to try adding the coproc along with jar in Hdfs and see what
> happens.
>
> Thanks,
> Anil Gupta
>
> On Tue, Oct 16, 2012 at 11:44 PM, Ramkrishna.S.Vasudevan <
> [EMAIL PROTECTED]> wrote:
>
> > I tried out a sample test class.  It is working properly.  I just
> have a
> > doubt whether you are doing the
> > Htd.addCoprocessor() step before creating the table?  Try that way
> hope it
> > should work.
> >
> > Regards
> > Ram
> >
> > > -----Original Message-----
> > > From: anil gupta [mailto:[EMAIL PROTECTED]]
> > > Sent: Wednesday, October 17, 2012 4:05 AM
> > > To: [EMAIL PROTECTED]
> > > Subject: Unable to add co-processor to table through HBase api
> > >
> > > Hi All,
> > >
> > > I would like to add a RegionObserver to a HBase table through HBase
> > > api. I
> > > don't want to put this RegionObserver as a user or system co-
> processor
> > > in
> > > hbase-site.xml since this is specific to a table. So, option of
> using
> > > hbase
> > > properties is out. I have already copied the jar file in the
> classpath
> > > of
> > > region server and restarted the cluster.
> > >
> > > Can any one point out the problem in following code for adding the
> > > co-processor to the table:
> > >     private void modifyTable(String name) throws IOException
> > >     {
> > >     Configuration conf = HBaseConfiguration.create();
> > >     HBaseAdmin hAdmin = new HBaseAdmin(conf);
> > >     hAdmin.disableTable("txn_subset");
> > >     if(!hAdmin.isTableEnabled("txn_subset"))
> > >     {
> > >       System.err.println("Trying to add coproc to table"); // using
> err
> > > so
> > > that it's easy to read this on eclipse console.
> > >
> > >
> hAdmin.getTableDescriptor(Bytes.toBytes("txn_subset")).addCoprocessor("
> > > com.intuit.hbase.poc.coprocessor.observer.IhubTxnRegionObserver");
> > >       if(
> > >
> hAdmin.getTableDescriptor(Bytes.toBytes("txn_subset")).hasCoprocessor("
> > > com.intuit.hbase.poc.coprocessor.observer.IhubTxnRegionObserver")
> > > )
> > >       {
> > >         System.err.println("YIPPPPPPPPPIEEEEE!!!!!!!");
> > >       }
> > >       hAdmin.enableTable("ihub_txn_subset");
> > >     }
> > >     hAdmin.close();
> > >         }*
> > > *
> > > --
> > > Thanks & Regards,
> > > Anil Gupta
> >
> >
>
>
> --
> Thanks & Regards,
> Anil Gupta