Davies Liu created SPARK-13661:
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Summary: Avoid the copy of UnsafeRow in HashedRelation
Key: SPARK-13661
URL: https://issues.apache.org/jira/browse/SPARK-13661
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Davies Liu
We usually build the HashedRelation on top of array of UnsafeRow, the copy
could be avoided.
The caller of HashedRelation need to do the copy if it's needed.
Another approach could be making the copy() of UnsafeRow smart so that it know
when should copy the bytes or not, this could be also useful for other
components.
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