Navis created HIVE-3904:
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Summary: Replace hashmaps in JoinOperators to array
Key: HIVE-3904
URL: https://issues.apache.org/jira/browse/HIVE-3904
Project: Hive
Issue Type: Improvement
Components: Query Processor
Reporter: Navis
Assignee: Navis
Priority: Trivial
Join operator has many HashMaps that maps tag to some internal value(ExprEvals,
OIs, etc.) and theses are accessed 5 or more times per an object, which is
seemed unnecessary overhead.
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