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From prasenjit mukherjee <pmukher...@quattrowireless.com>
Subject Re: Region server throwing NPE.
Date Tue, 24 Nov 2009 17:23:37 GMT
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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