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From "Ryabin, Thomas" <Tom.Rya...@McKesson.com>
Subject How to make the query compiler not determine the number of reducers?
Date Fri, 27 Apr 2012 20:48:25 GMT
Hi,

 

When I run a query that uses a custom UDF I made, one of the lines it
prints out is:

Number of reduce tasks determined at compile time: 1

 

And this causes the MapReduce job to have only 1 reducer. Is there a way
to make it so the compiler does not determine the number of reduce tasks
to create, so I can specify the number myself?

 

The query in question is:

select test_udf(name, store) from employees join stores;

 

Thanks,

Thomas


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