Sean Owen created SPARK-13339:
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Summary: Clarify commutative / associative operator requirements
for reduce, fold
Key: SPARK-13339
URL: https://issues.apache.org/jira/browse/SPARK-13339
Project: Spark
Issue Type: Improvement
Components: Documentation
Affects Versions: 1.6.0
Reporter: Sean Owen
Assignee: Sean Owen
Priority: Minor
As begun in https://github.com/apache/spark/pull/11091 we should make
consistent the documentation for the function supplied to various reduce and
fold methods. reduce needs associative and commutative; fold needs associative.
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