Dmitriy V. Ryaboy updated PIG-990:

    Attachment: pinned_options_4.patch

> 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
>            Assignee: Dmitriy V. Ryaboy
>            Priority: Minor
>             Fix For: 0.7.0
>         Attachments: pinned_options.patch, pinned_options_2.patch, 
> pinned_options_3.patch, pinned_options_4.patch
> 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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