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Posted to dev@hive.apache.org by "Navis (JIRA)" <ji...@apache.org> on 2013/01/16 06:04:15 UTC

[jira] [Created] (HIVE-3904) Replace hashmaps in JoinOperators to array

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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