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From "Phabricator (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-3904) Replace hashmaps in JoinOperators to array
Date Thu, 28 Feb 2013 01:36:11 GMT

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

Phabricator updated HIVE-3904:
------------------------------

    Attachment: HIVE-3904.D7959.2.patch

navis updated the revision "HIVE-3904 [jira] Replace hashmaps in JoinOperators to array".

  Rebased to trunk

Reviewers: JIRA

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

CHANGE SINCE LAST DIFF
  https://reviews.facebook.net/D7959?vs=25563&id=28821#toc

AFFECTED FILES
  ql/src/java/org/apache/hadoop/hive/ql/exec/AbstractMapJoinOperator.java
  ql/src/java/org/apache/hadoop/hive/ql/exec/CommonJoinOperator.java
  ql/src/java/org/apache/hadoop/hive/ql/exec/HashTableSinkOperator.java
  ql/src/java/org/apache/hadoop/hive/ql/exec/JoinOperator.java
  ql/src/java/org/apache/hadoop/hive/ql/exec/JoinUtil.java
  ql/src/java/org/apache/hadoop/hive/ql/exec/MapJoinOperator.java
  ql/src/java/org/apache/hadoop/hive/ql/exec/SMBMapJoinOperator.java
  ql/src/java/org/apache/hadoop/hive/ql/exec/SkewJoinHandler.java
  ql/src/java/org/apache/hadoop/hive/ql/plan/JoinDesc.java

To: JIRA, 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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