Mohit Sabharwal created PIG-4601:
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Summary: Implement Merge CoGroup for Spark engine
Key: PIG-4601
URL: https://issues.apache.org/jira/browse/PIG-4601
Project: Pig
Issue Type: Sub-task
Components: spark
Affects Versions: spark-branch
Reporter: Mohit Sabharwal
Fix For: spark-branch
Implement single-stage ("map-side") co-group where all the input data sets are
sorted by key:
{code}
C = cogroup A by c1, B by c1 using 'merge';
{code}
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