Pallavi Rao created PIG-4709:
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Summary: Improve performance of GROUPBY operator on Spark
Key: PIG-4709
URL: https://issues.apache.org/jira/browse/PIG-4709
Project: Pig
Issue Type: Sub-task
Components: spark
Reporter: Pallavi Rao
Assignee: Pallavi Rao
Currently, the GROUPBY operator of PIG is mapped by Spark's CoGroup. When the
grouped data is consumed by subsequent operations to perform algebraic
operations, this is sub-optimal as there is lot of shuffle traffic.
The Spark Plan must be optimized to use reduceBy, where possible, so that a
combiner is used.
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