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MapReduce, mail # user - notorious ClassNotFoundError


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Re: notorious ClassNotFoundError
Joey Krabacher 2012-11-16, 21:15
External libs must exist on all task nodes, in case you haven't already
done that.

/* Joey */
On Fri, Nov 16, 2012 at 3:13 PM, Kartashov, Andy <[EMAIL PROTECTED]>wrote:

>  Guys,
>
>
>
> The notorious error. Used all possible clues to resolve this.
>
>
>
> Ran sqoop --import.... at command line without problems. But whenever am
> trying to execute MR job get Error: java.lang.ClassNotFoundException:
> com.cloudera.sqoop.lib.SqoopRecord
>
> This exact same job ran before.
>
>
>
> I can clearly see the com/cloudera/sqoop/lib/SqoopRecord.class inside
> sqoop-1.4.1-cdh4.1.2.jar...
>
>
>
> I copied this jar file to every possible directory:
>
> /usr/lib/hadoop
>
> /usr/lib/hadoop/lib
>
> As well as mapreduce-0.20 libs
>
>
>
> Even tried to include this jar at command line -libjars which is added to
> the job...
>
>
>
> But MR still doesn't pick it up, throwing ClassNotFoundError error.
>
>
>
> Rgds,
>
> AK
>
>
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