Chao created HIVE-8970:
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Summary: Enable map join optimization only when
hive.auto.convert.join is true [Spark Branch]
Key: HIVE-8970
URL: https://issues.apache.org/jira/browse/HIVE-8970
Project: Hive
Issue Type: Sub-task
Components: Spark
Affects Versions: spark-branch
Reporter: Chao
Fix For: spark-branch
Right now, in Spark branch we enable MJ without looking at this configuration.
The related code in {{SparkMapJoinOptimizer}} is commented out. We should only
enable MJ when the flag is true.
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