Davies Liu created SPARK-4087:
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Summary: Only use broadcast for large tasks
Key: SPARK-4087
URL: https://issues.apache.org/jira/browse/SPARK-4087
Project: Spark
Issue Type: Improvement
Reporter: Davies Liu
Priority: Critical
After we broadcast every tasks, some regressions are introduced because of
broadcast is not stable enough.
So we would like to only use broadcast for large tasks, which will keep the
same behaviour as 1.0 for most of the cases.
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