junlong created SPARK-3917:
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Summary: Compress data before network transfer
Key: SPARK-3917
URL: https://issues.apache.org/jira/browse/SPARK-3917
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 1.1.0
Environment: All
Reporter: junlong
Priority: Critical
Fix For: 1.1.0
When training Gradient Boosting Decision Tree on large sparse data, heavy
network flow pull down CPU utilization ratio. And through compression on
network flow data, 90% are reduced.
So maybe compression before transfering may provide higher speedup on
spark. And user can configure it to decide whether compress or not.
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