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Re: Cannot communicate
I was able to add the appropriate Maven dependencies and it "works". I
have one last question on this thread. With the added dependencies I am
getting the warning:

13/04/22 11:53:18 WARN util.NativeCodeLoader: Unable to load
native-hadoop library for your platform... using builtin-java classes
where applicable
What does this mean? Can it be avoided?

Thanks again.
On Mon, Apr 22, 2013 at 11:17 AM, Kevin Burton wrote:

> What dependency for the Maven project should I use?
>
> On Apr 22, 2013, at 10:02 AM, Ted Yu <[EMAIL PROTECTED]> wrote:
>
>> The exception was due to incompatible RPC versions between Apache
>> maven
>> artifacts and CDH4.
>>
>> I suggest you build the project with same hadoop version as in your
>> cluster.
>>
>> On Mon, Apr 22, 2013 at 7:50 AM, Kevin Burton
>> <[EMAIL PROTECTED]>wrote:
>>
>>> I am relatively new to Hadoop and am working through a Manning
>>> publication
>>> "Hadoop in Action". One of the first program in the book (page 44)
>>> gives me
>>> a Java exception: org.apache.hadoop.ipc.RemoteException: Server IPC
>>> version
>>> 7 cannot communicate with client version 3.
>>>
>>> My Hadoop distribution is CDH4. The Java Maven project takes its
>>> dependency from Apache. The exception comes from a line involving
>>> the
>>> "Configuration" class.
>>>
>>> Any idea on how to avoid this exception?