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From "Dmitriy V. Ryaboy (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-990) Provide a way to pin LogicalOperator Options
Date Fri, 02 Oct 2009 02:58:23 GMT
Provide a way to pin LogicalOperator Options
--------------------------------------------

                 Key: PIG-990
                 URL: https://issues.apache.org/jira/browse/PIG-990
             Project: Pig
          Issue Type: Bug
          Components: impl
            Reporter: Dmitriy V. Ryaboy
            Priority: Minor
             Fix For: 0.6.0


This is a proactive patch, setting up the groundwork for adding an optimizer.

Some of the LogicalOperators have options. For example, LOJoin has a variety of join types
(regular, fr, skewed, merge), which can be set by the user or chosen by a hypothetical optimizer.
 If a user selects a join type, pig philoophy guides us to always respect the user's choice
and not explore alternatives.  Therefore, we need a way to "pin" options.  

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