Jason Dere created HIVE-11262:
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Summary: Skip MapJoin processing if the join hash table is empty
Key: HIVE-11262
URL: https://issues.apache.org/jira/browse/HIVE-11262
Project: Hive
Issue Type: Improvement
Components: Query Processor
Reporter: Jason Dere
Assignee: Jason Dere
Currently the map join processor processes all rows of the big table, even when
the hash table is empty. If it is an inner join, we should be able to skip the
join processing, since the result should be empty.
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