[HIVE-20598] Fix typos in HiveAlgorithmsUtil calculations

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0-alpha-1
• Component/s: Logical Optimizer
• Assignee: Zoltan Haindrich
• Reporter: Zoltan Haindrich
• Created: 19/Sep/18 13:16
• Updated: 17/Nov/22 08:55
• Resolved: 21/Sep/18 15:28

Description

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