Zoltan Haindrich created HIVE-20598:
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Summary: Fix computeSortMergeCPUCost calculation
Key: HIVE-20598
URL: https://issues.apache.org/jira/browse/HIVE-20598
Project: Hive
Issue Type: Bug
Components: Logical Optimizer
Reporter: Zoltan Haindrich
Assignee: Zoltan Haindrich
HIVE-10343 have made the costs changeable by hiveconf settings; however there
was a method in which there was already a local variable named
cpuCost....bottom line is the cost of n-way joins calculated by this method is
computed as the product of the number of rows...
https://github.com/apache/hive/blob/9c907769a63a6b23c91fdf0b3f3d0aa6387035dc/ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/cost/HiveAlgorithmsUtil.java#L83
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