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From "Navis (JIRA)" <>
Subject [jira] [Created] (HIVE-3904) Replace hashmaps in JoinOperators to array
Date Wed, 16 Jan 2013 05:04:15 GMT
Navis created HIVE-3904:

             Summary: Replace hashmaps in JoinOperators to array
                 Key: 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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