Chao Sun created HIVE-11297:
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Summary: Combine op trees for partition info generating tasks
[Spark branch]
Key: HIVE-11297
URL: https://issues.apache.org/jira/browse/HIVE-11297
Project: Hive
Issue Type: Bug
Affects Versions: spark-branch
Reporter: Chao Sun
Currently, for dynamic partition pruning in Spark, if a small table generates
partition info for more than one partition columns, multiple operator trees are
created, which all start from the same table scan op, but have different spark
partition pruning sinks.
As an optimization, we can combine these op trees and so don't have to do table
scan multiple times.
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