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how to write mulitple reducers?

Question asked by vimal on May 6, 2014
Latest reply on May 6, 2014 by vimal
I try to run a map reducer task for my job.
In Map am creating FloatWritable[2000][70] array for each key. A single key may contain 1100 values that means 1100 x 2000 x 70 elements.

While I try to process those in my reducer its running for long time and reducer takes more time to sum the value of those array.

I need some suggestion how to improve the reducer execution time to low.

Need some help to configure multiple reducer for same key.