Rohini Palaniswamy created PIG-3849:
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Summary: Optimize group by followed by join on the same key
Key: PIG-3849
URL: https://issues.apache.org/jira/browse/PIG-3849
Project: Pig
Issue Type: Sub-task
Reporter: Rohini Palaniswamy
This can be done in one vertex with multiple inputs instead of having an
extra vertex to do the join. i.e Currently Vertex 1 (load relation1) -> Vertex
2 (group by) -> Vertex 4 (join) <- Vertex 3 (load relation 2). This could be
changed to Vertex 1 (load relation1) -> Vertex 2 (group by and join) <- Vertex
3 (load relation 2)
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