[HIVE-16100] Dynamic Sorted Partition optimizer loses sibling operators

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.1, 2.1.1, 2.2.0
• Fix Version/s: 4.0.0-alpha-1
• Component/s: Query Planning
• Assignee: Vineet Garg
• Reporter: Gopal Vijayaraghavan
• Created: 03/Mar/17 08:27
• Updated: 17/Nov/22 08:54
• Resolved: 12/Dec/18 00:30

Description

https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/SortedDynPartitionOptimizer.java#L173

      // unlink connection between FS and its parent
      fsParent = fsOp.getParentOperators().get(0);
      fsParent.getChildOperators().clear();

The optimizer discards any cases where the fsParent has another SEL child

Issue Links

• duplicates: HIVE-20757 Autogather stats doesn't work when SDPO (sort dynamic partition optimization) is ON
• duplicates: HIVE-21019 Fix autoColumnStats tests to make auto stats gather possible.