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From Edson Ramiro <>
Subject does Hive implement any Combiner by default?
Date Mon, 08 Aug 2016 18:59:12 GMT
hi all,

I'm executing TPC-H on Hive 2.0.1, using Yarn 2.7, and I'm wondering if
Hive implements any Combiner by default? If so, how do I enable it?

I am asking this because I checked the values of COMBINE_INPUT_RECORDS and
COMBINE_OUTPUT_RECORDS and they are always zero.

Thanks in advance,

      Edson Ramiro

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