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Re: java.lang.ClassNotFoundException: com.google.protobuf.Message
could anyone recommend a compatible Hadoop version for HBase 0.94 ?

Should I also upgrade zookeeper (3.3.2) ?

Thanks.

On Tue, May 29, 2012 at 5:10 PM, Amit Sela <[EMAIL PROTECTED]> wrote:

> I'm not sure Hadoop 0.20.3 is compatible with HBase 0.94 but I can't find
> any documentation about it
>
>
> On Tue, May 29, 2012 at 4:40 PM, Marcos Ortiz <[EMAIL PROTECTED]> wrote:
>
>> Are you sure that 0.94 is compatible with Hadoop 0.20.3?
>>
>>
>>
>> On 05/29/2012 09:13 AM, Amit Sela wrote:
>>
>>> Hi all,
>>>
>>> I just upgraded from HBase 0.90.2 to 0.94 (running on hadoop 0.20.3).
>>>
>>> It seems like the cluster is up and running.
>>>
>>> I tried running an old MR job that writes into HBase, and after Map is
>>> complete (map 100%) and before Reduce begins (reduce 0%) - I got the
>>> following Exception:
>>>
>>> 12/05/29 12:32:02 INFO mapred.JobClient: Task Id :
>>> attempt_201205291226_0001_r_**000000_0, Status : FAILED
>>> Error: java.lang.**ClassNotFoundException: com.google.protobuf.Message
>>> at java.net.URLClassLoader$1.run(**URLClassLoader.java:202)
>>> at java.security.**AccessController.doPrivileged(**Native Method)
>>> at java.net.URLClassLoader.**findClass(URLClassLoader.java:**190)
>>> at java.lang.ClassLoader.**loadClass(ClassLoader.java:**306)
>>> at sun.misc.Launcher$**AppClassLoader.loadClass(**Launcher.java:301)
>>> at java.lang.ClassLoader.**loadClass(ClassLoader.java:**247)
>>> at
>>> org.apache.hadoop.hbase.io.**HbaseObjectWritable.<clinit>(**
>>> HbaseObjectWritable.java:263)
>>> at org.apache.hadoop.hbase.ipc.**Invocation.write(Invocation.**java:138)
>>> at
>>> org.apache.hadoop.hbase.ipc.**HBaseClient$Connection.**
>>> sendParam(HBaseClient.java:**537)
>>> at org.apache.hadoop.hbase.ipc.**HBaseClient.call(HBaseClient.**
>>> java:898)
>>> at
>>> org.apache.hadoop.hbase.ipc.**WritableRpcEngine$Invoker.**
>>> invoke(WritableRpcEngine.java:**150)
>>> at $Proxy2.getProtocolVersion(**Unknown Source)
>>> at
>>> org.apache.hadoop.hbase.ipc.**WritableRpcEngine.getProxy(**
>>> WritableRpcEngine.java:183)
>>> at org.apache.hadoop.hbase.ipc.**HBaseRPC.getProxy(HBaseRPC.**java:303)
>>> at org.apache.hadoop.hbase.ipc.**HBaseRPC.getProxy(HBaseRPC.**java:280)
>>> at org.apache.hadoop.hbase.ipc.**HBaseRPC.getProxy(HBaseRPC.**java:332)
>>> at org.apache.hadoop.hbase.ipc.**HBaseRPC.waitForProxy(**
>>> HBaseRPC.java:236)
>>> at
>>> org.apache.hadoop.hbase.**client.HConnectionManager$**
>>> HConnectionImplementation.**getHRegionConnection(**
>>> HConnectionManager.java:1284)
>>> at
>>> org.apache.hadoop.hbase.**client.HConnectionManager$**
>>> HConnectionImplementation.**getHRegionConnection(**
>>> HConnectionManager.java:1240)
>>> at
>>> org.apache.hadoop.hbase.**client.HConnectionManager$**
>>> HConnectionImplementation.**getHRegionConnection(**
>>> HConnectionManager.java:1227)
>>> at
>>> org.apache.hadoop.hbase.**client.HConnectionManager$**
>>> HConnectionImplementation.**locateRegionInMeta(**
>>> HConnectionManager.java:936)
>>> at
>>> org.apache.hadoop.hbase.**client.HConnectionManager$**
>>> HConnectionImplementation.**locateRegion(**HConnectionManager.java:832)
>>> at
>>> org.apache.hadoop.hbase.**client.HConnectionManager$**
>>> HConnectionImplementation.**locateRegion(**HConnectionManager.java:801)
>>> at
>>> org.apache.hadoop.hbase.**client.HConnectionManager$**
>>> HConnectionImplementation.**locateRegionInMeta(**
>>> HConnectionManager.java:933)
>>> at
>>> org.apache.hadoop.hbase.**client.HConnectionManager$**
>>> HConnectionImplementation.**locateRegion(**HConnectionManager.java:836)
>>> at
>>> org.apache.hadoop.hbase.**client.HConnectionManager$**
>>> HConnectionImplementation.**locateRegion(**HConnectionManager.java:801)
>>> at org.apache.hadoop.hbase.**client.HTable.finishSetup(**
>>> HTable.java:234)
>>> at org.apache.hadoop.hbase.**client.HTable.<init>(HTable.**java:174)
>>> at
>>> org.apache.hadoop.hbase.**client.HTableFactory.**createHTableInterface(*
>>> *HTableFactory.java:36)
>>> at
>>> org.apache.hadoop.hbase.**client.HTablePool.**