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From "Sadasivam, Srinivasan" <sr...@qualcomm.com>
Subject RE: ClientProtocol version mismatch. (client = 42, server = 41) error after upgrading from 0.89 to 0.90
Date Fri, 21 Jan 2011 00:56:29 GMT
Thanks for pointing out :). No wonder it is aptly named "notsoquick.html". 

-----Original Message-----
From: saint.ack@gmail.com [mailto:saint.ack@gmail.com] On Behalf Of Stack
Sent: Thursday, January 20, 2011 4:32 PM
To: user@hbase.apache.org
Subject: Re: ClientProtocol version mismatch. (client = 42, server = 41) error after upgrading
from 0.89 to 0.90

I think you are running into the issue that the second paragraph here
http://hbase.apache.org/notsoquick.html#hadoop is about; i.e. you need
to put in hbase/lib the hadoop jar for your cluster.

St.Ack

On Thu, Jan 20, 2011 at 4:27 PM, Sadasivam, Srinivasan
<srini@qualcomm.com> wrote:
> Getting exception after upgrading to 0.90. (from hbase-0.89.20100924) . Did I miss corresponding
HDFS upgrade if any?
> What currently I have DFS version: 0.20.2, r911707
> Thanks.
>
>
> 2011-01-21 00:14:41,547 FATAL org.apache.hadoop.hbase.master.HMaster: Unhandled exception.
Starting shutdown.
> org.apache.hadoop.ipc.RPC$VersionMismatch: Protocol org.apache.hadoop.hdfs.protocol.ClientProtocol
version mismatch. (client = 42, server = 41)
>        at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:364)
>        at org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:113)
>        at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:215)
>        at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:177)
>        at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:82)
>        at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1378)
>        at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66)
>        at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1390)
>        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:196)
>        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:95)
>        at org.apache.hadoop.hbase.master.MasterFileSystem.<init>(MasterFileSystem.java:87)
>        at org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:341)
>        at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:277)
> 2011-01-21 00:14:41,550 INFO org.apache.hadoop.hbase.master.HMaster: Aborting
>

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