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Posted to user@hive.apache.org by Srinivasan Hariharan02 <Sr...@infosys.com> on 2016/03/22 07:59:19 UTC

Hive CBO

Hi,

Does Hive supports extended CBO options like cpu,io only for tez execution. When I See the HIveDefaultCostModel class (https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/cost/HiveDefaultCostModel.java)  all cost has been made to zero Cost. Whereas in HiveOnTezCostModel (https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/cost/HiveOnTezCostModel.java) it is being calculated. Pls advice.

Regards,
Srinivasan Hariharan
+91-9940395830