I specify a class at runtime via a parameter to a job. I used to put a jar with the possible class choices in $HADOOP_HOME/lib on all machines (using only one in a psuedo cluster for this example) then restart my cluster and run my job. Then I upgraded from 0.20.203 to 0.20.205, which may have nothing to do with the problem but there it is.

In any case the job cannot find the class in $HADOOP_HOME/lib. I checked the jar and its in the right place and has my classes in it.

Did I miss something? Is there a better way?

Sorry ahead of time, this must be a repeat of a repeat but the above is the best advice I can find.


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