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From "Ashish Thusoo (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-578) Refator partition pruning code as an optimizer transformation in order to fix bugs that appear in the current code
Date Wed, 24 Jun 2009 15:33:07 GMT

     [ https://issues.apache.org/jira/browse/HIVE-578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ashish Thusoo updated HIVE-578:
-------------------------------

    Attachment: patch-578.txt

This a preliminary code patch. I have not yet plugged this into the SemanticAnalyzer phase
but comments are welcome in order to catch any early omissions. This introduces test diffs
which I will upload with the final patch.


> Refator partition pruning code as an optimizer transformation in order to fix bugs that
appear in the current code
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-578
>                 URL: https://issues.apache.org/jira/browse/HIVE-578
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>    Affects Versions: 0.3.0
>            Reporter: Ashish Thusoo
>            Assignee: Ashish Thusoo
>         Attachments: patch-578.txt
>
>
> Some bugs with partition pruning have been reported and the correct fix for many of them
is to rewrite the partition pruning code as an optimizer transformation which gets kicked
in after the predicate pushdown code. This refactor also uses the graph walker framework so
that the partition pruning code gets consolidated well with the frameworks and does not work
on the query block but rather works on the operator tree.

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