Namit Jain created HIVE-4396:
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Summary: Create a efficient method to create a deep copy of a
mapredwork
Key: HIVE-4396
URL: https://issues.apache.org/jira/browse/HIVE-4396
Project: Hive
Issue Type: Improvement
Components: Query Processor
Reporter: Namit Jain
In many optimization steps, we create a copy of the query plan and then change
some parts of it.
Currently, the only reliable way to do so is to serialize and deserialize it,
which is fairly expensive.
It would be very useful to have a cheaper method to do the same.
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