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From stack <st...@duboce.net>
Subject Re: Region server throwing NPE.
Date Tue, 24 Nov 2009 17:25:16 GMT
It just seems like a different version of hbase is somewhere on server
CLASSPATH.  Can you check?
Thanks,
St.Ack

On Tue, Nov 24, 2009 at 9:23 AM, prasenjit mukherjee <
pmukherjee@quattrowireless.com> wrote:

> Possibly yes. I did run 2 versions of hbase on these machines. So how
> do I clean everything up ? I already cleaned hadoop's temp directory.
> What should I do for cleaning hbase ?
>
> On Tue, Nov 24, 2009 at 9:39 PM, stack <stack@duboce.net> wrote:
> > For sure you have same version of hbase everywhere?  Did you ever run
> > earlier versions of hbase on these machines?
> >
> > Server handler 3 on 60020, call null([B@178655) from 127.0.1.1:55630:
> > error: java.io.IOException: java.lang.NullPointerException
> > java.io.IOException: java.lang.NullPointerException
> >       at java.lang.Class.searchMethods(
> > Class.java:2646)
> >       at java.lang.Class.getMethod0(Class.java:2670)
> >       at java.lang.Class.getMethod(Class.java:1603)
> >       at
> > org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:643)
> >       at
> > org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:915)
> >
> > It seems to be looking for a method that doesn't exist in the deployed
> > hbase.
> >
> > St.Ack
> >
> >
> > On Tue, Nov 24, 2009 at 4:34 AM, prasenjit mukherjee
> > <prasen.bea@gmail.com>wrote:
> >
> >> I am using hadoop-20.1 with hbase-20.1. I am able to create,list,scan
> >> rows/tables via hbase shell.
> >>
> >> This is the stacktrace from client side :
> >>
> >> 09/11/24 17:13:45 WARN client.HConnectionManager$TableServers: Testing
> >> for table existence threw exception
> >> org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to
> >> contact region server null for region , row '', but failed after 10
> >> attempts.
> >> Exceptions:
> >> java.io.IOException: java.io.IOException: java.lang.NullPointerException
> >>        at java.lang.Class.searchMethods(Class.java:2646)
> >>        at java.lang.Class.getMethod0(Class.java:2670)
> >>        at java.lang.Class.getMethod(Class.java:1603)
> >>        at
> >> org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:643)
> >>        at
> >>
> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:915)
> >>
> >> ......10 times.
> >>
>

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