Remus Rusanu created HIVE-16438:
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Summary: Support inclusive sort order on ReduceDink deduplication
Key: HIVE-16438
URL: https://issues.apache.org/jira/browse/HIVE-16438
Project: Hive
Issue Type: Bug
Components: Query Planning
Reporter: Remus Rusanu
Assignee: Remus Rusanu
HIVE-11132, HIVE-12664 and HIVE-15708 hit issues around the
ReduceSinkDeDuplicate logic. The patch for HIVE-15708 forces the sort order of
all reduced operators to be the same, disallowing for allowance of less
restrictive sort in parent RS operators that are covered by the more
restrictive child RS operator. Logically this condition should be allowed, ie.
child operator sorts by {{(A, B, C)}} and parent sorts by {{(A,B)}} it should
be merged. This is the JIRA to track that work.
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