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For information about how to use these configuration properties, see Configuring Hive. That document also describes administrative configuration properties for setting up Hive in the Configuration Variables section. Hive Metastore Administration describes additional configuration properties for the metastore.

Query Execution

hive.execution.engine

• Default Value: mr
• Added In: 0.13.0 with HIVE-6103 and HIVE-6098

Chooses execution engine. Options are: mr (Map reduce, default) or tez (Tez execution, for Hadoop 2 only).

See Hive on Tez for more information.

mapred.reduce.tasks

• Default Value: -1
• Added In: 0.1

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