Corinne Chandel updated PIG-1084:

    Attachment: pig-6.patch

This patch includes fixes for 3 JIRAs and misc changes.

(1) PIG-1084 (this JIRA)

• Cookbook -  add new section "Implement the Aggregator Interface"; updated 
"Make Your UDFs Algebraic" section (changed link to point to Aggregate 
Functions (where algebraic functions are discussed), other minor edits)

• UDF Guide  - updated "Accumulator Interface" section (minor edits)

(2) PIG-1123

• Pig Latin Reference Guide - Updated set command (added default_parallel)

• Cookbook - Updated "Use the PARALLEL Keyword" section (added link to set 

(3) PIG-1081

• Cookbook - Updated the "Use the PARALLEL Keyword" section (updated 
description, checked and then added links to operators that use PARALLEL)

(4) Misc changes

• Pig Latin Users Guide - removed the Zebra section (moved to the Zebra docs)

• Pig Latin Reference Guide - minor edits, removed out-dated materials

Apply this patch to the Pig trunk: 

Note: No new test code required; changes to documentation only.

> Pig CookBook documentation "Take Advantage of Join Optimization" 
> additions:Merge and Skewed Join
> ------------------------------------------------------------------------------------------------
>                 Key: PIG-1084
>                 URL: https://issues.apache.org/jira/browse/PIG-1084
>             Project: Pig
>          Issue Type: Bug
>          Components: documentation
>    Affects Versions: 0.6.0
>            Reporter: Viraj Bhat
>            Assignee: Corinne Chandel
>             Fix For: 0.6.0
>         Attachments: cookbook.patch, pig-6.patch
> Hi all,
>  We have a host of Join optimizations that have been implemented recently in 
> Pig to improve performance. These include:
> http://hadoop.apache.org/pig/docs/r0.5.0/piglatin_reference.html#JOIN
> 1) Merge Join
> 2) Skewed Join
> It would be nice to mention the Merge Join and Skewed join in the following 
> section on the PigCookBook
> http://hadoop.apache.org/pig/docs/r0.5.0/cookbook.html#Take+Advantage+of+Join+Optimization
> Can we update this release 0.6??
> Thanks
> Viraj

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