Wei Zheng created HIVE-11714:
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Summary: Handle cross product join properly for Hybrid grace
hashjoin
Key: HIVE-11714
URL: https://issues.apache.org/jira/browse/HIVE-11714
Project: Hive
Issue Type: Bug
Components: Hive
Affects Versions: 1.2.0
Reporter: Wei Zheng
Assignee: Wei Zheng
Current partitioning calculation is solely based on hash value of the key. For
cross product join where keys are empty, all the rows will be put into
partition 0. This falls back to the regular mapjoin behavior where we only have
one hashtable.
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