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https://issues.apache.org/jira/browse/HIVE-3904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13589422#comment-13589422
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Phabricator commented on HIVE-3904:
-----------------------------------

njain has accepted the revision "HIVE-3904 [jira] Replace hashmaps in 
JoinOperators to array".

REVISION DETAIL
  https://reviews.facebook.net/D7959

BRANCH
  DPAL-1960

ARCANIST PROJECT
  hive

To: JIRA, njain, navis
Cc: njain

                
> 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
>         Attachments: HIVE-3904.D7959.1.patch, HIVE-3904.D7959.2.patch
>
>
> 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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