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From Jon Bender <>
Subject Single Map task for Hive queries
Date Mon, 15 Aug 2011 17:23:33 GMT

I have external tables in Hive stored in a single flat text file.  When I
execute queries against it, all of my jobs are run as a single map task,
even on very large tables.

What steps do I need to make to ensure that these queries are split up and
pushed out to multiple TTs?  Do I need to store the Hive tables in a
different internal file format?  Make some configuration changes?


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