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

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

     [ https://issues.apache.org/jira/browse/HIVE-3904?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Navis updated HIVE-3904:
------------------------

    Status: Patch Available  (was: Open)
    
> 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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