hadoop-pig-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Alan Gates (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-262) Pig needs an optimizer
Date Mon, 30 Jun 2008 15:59:44 GMT

    [ https://issues.apache.org/jira/browse/PIG-262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12609272#action_12609272
] 

Alan Gates commented on PIG-262:
--------------------------------

Checked in a modified version of optimizer.patch.  I'm still open to moving the type cast
insertion functionality to the validator, as we discussed.  But I've checked it in with the
functionality in the optimizer for mainly to preserve the optimizer framework and give an
example of how to use it.  Once we have additional optimizer rules, it will be easier to relocate
this.

> 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.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message