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https://issues.apache.org/jira/browse/PIG-2167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13264670#comment-13264670
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[email protected] commented on PIG-2167:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/4670/
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(Updated 2012-04-30 04:05:03.466616)
Review request for pig and Dmitriy Ryaboy.
Changes
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Updated JIRA issue field to reflect just the issue number.
Summary
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This is a review board for https://issues.apache.org/jira/browse/PIG-2167
This addresses bug PIG-2167.
https://issues.apache.org/jira/browse/PIG-2167
Diffs
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http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/newplan/logical/optimizer/AllExpressionVisitor.java
1325115
http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/newplan/logical/optimizer/SchemaResetter.java
1325115
http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/newplan/logical/relational/LOCube.java
PRE-CREATION
http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/newplan/logical/relational/LogicalRelationalNodesVisitor.java
1325115
http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/newplan/logical/visitor/ProjectStarExpander.java
1325115
http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/parser/AliasMasker.g
1325115
http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/parser/AstPrinter.g
1325115
http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/parser/AstValidator.g
1325115
http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/parser/LogicalPlanBuilder.java
1325115
http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/parser/LogicalPlanGenerator.g
1325115
http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/parser/QueryLexer.g
1325115
http://svn.apache.org/repos/asf/pig/trunk/src/org/apache/pig/parser/QueryParser.g
1325115
http://svn.apache.org/repos/asf/pig/trunk/test/org/apache/pig/parser/TestLexer.pig
1325115
http://svn.apache.org/repos/asf/pig/trunk/test/org/apache/pig/parser/TestLogicalPlanGenerator.java
1325115
http://svn.apache.org/repos/asf/pig/trunk/test/org/apache/pig/parser/TestParser.pig
1325115
http://svn.apache.org/repos/asf/pig/trunk/test/org/apache/pig/parser/TestQueryLexer.java
1325115
http://svn.apache.org/repos/asf/pig/trunk/test/org/apache/pig/parser/TestQueryParser.java
1325115
http://svn.apache.org/repos/asf/pig/trunk/test/org/apache/pig/test/TestCubeOperator.java
PRE-CREATION
Diff: https://reviews.apache.org/r/4670/diff
Testing
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Unit tests: All passed
Pre-commit tests: All passed
ant clean test-commit
Thanks,
Prasanth_J
> CUBE operation in Pig
> ---------------------
>
> Key: PIG-2167
> URL: https://issues.apache.org/jira/browse/PIG-2167
> Project: Pig
> Issue Type: New Feature
> Reporter: Dmitriy V. Ryaboy
> Assignee: Dmitriy V. Ryaboy
> Labels: gsoc2012, mentor
> Attachments: PIG-2167.1.patch, PIG-2167.2.patch,
> Pig-Cubing-Performance.png
>
>
> Computing aggregates over a cube of several dimensions is a common operation
> in data warehousing.
> The standard SQL syntax is "GROUP relation BY dim1, dim2, dim3 WITH CUBE" --
> which in addition to all dim1-2-3, produces aggregations for just dim1, just
> dim1 and dim2, etc. NULL is generally used to represent "all".
> A presentation by Arnab Nandi describes how one might implement efficient
> cubing in Map-Reduce here: http://pdf.cx/44wrk
> We can start with the naive solution which only works for algebraic measures,
> and work up from there.
> This is a candidate project for Google summer of code 2012. More information
> about the program can be found at
> https://cwiki.apache.org/confluence/display/PIG/GSoc2012
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