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From "Pi Song (JIRA)" <j...@apache.org>
Subject [jira] Updated: (PIG-262) Pig needs an optimizer
Date Mon, 16 Jun 2008 10:03:45 GMT

     [ https://issues.apache.org/jira/browse/PIG-262?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Pi Song updated PIG-262:
------------------------

    Comment: was deleted

> Pig needs an optimizer
> ----------------------
>
>                 Key: PIG-262
>                 URL: https://issues.apache.org/jira/browse/PIG-262
>             Project: Pig
>          Issue Type: Sub-task
>          Components: impl
>            Reporter: Alan Gates
>            Assignee: Alan Gates
>         Attachments: optimizer.patch
>
>
> We need to add an optimizer to pig.  This will enable us to do some traditional optimizations,
such as filter and projection pushing, join order and execution choices, etc.  It will also
enable optimizations specific to map/reduce (such as using the combiner).
> The optimizer will need to operate at various levels, including the logical, physical,
and possibly map/reduce plan levels.

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