Xianda Ke created PIG-5024:
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Summary: add a physical operator to broadcast small RDDs
Key: PIG-5024
URL: https://issues.apache.org/jira/browse/PIG-5024
Project: Pig
Issue Type: Sub-task
Reporter: Xianda Ke
Assignee: Xianda Ke
Currently, when optimize some kinds of JOIN, the indexed or sampling files are
saved into HDFS. By setting the replication to a larger number, it serves as
cache.
It seems that we can add a physical operator to broadcast small RDDs.
This will benefit some specialized Joins, such as Skewed Join, Replicated Join
and so on.
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