Imran Rashid created SPARK-5786:
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Summary: Documentation of Narrow Dependencies
Key: SPARK-5786
URL: https://issues.apache.org/jira/browse/SPARK-5786
Project: Spark
Issue Type: Improvement
Components: Documentation
Reporter: Imran Rashid
Narrow dependencies can really improve job performance by skipping shuffles
entirely. However aside from being mentioned in some early papers and during
some meetups, they aren't explained (or even mentioned) in the docs.
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