Ramesh Kumar Thangarajan created HIVE-28532:
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Summary: Map Join Reuse cache allows to share hashtables for Outer
join and Inner join
Key: HIVE-28532
URL: https://issues.apache.org/jira/browse/HIVE-28532
Project: Hive
Issue Type: Bug
Security Level: Public (Viewable by anyone)
Reporter: Ramesh Kumar Thangarajan
Assignee: Ramesh Kumar Thangarajan
Map Join Reuse cache allows to share hashtables for Outer join and Inner join.
But we cannot reuse for hash table for a non-outer join to outer join. Because
outer join cannot accept the hash table kind other than HASHMAP, whereas there
are other types like HASHSET and HASH_MULTISET.
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