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| author | Sean Owen <sowen@cloudera.com> | 2016-02-19 10:26:38 +0000 |
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| committer | Sean Owen <sowen@cloudera.com> | 2016-02-19 10:26:38 +0000 |
| commit | fb7e21797ed618d9754545a44f8f95f75b66757a (patch) | |
| tree | 42b592cf1f25aeaf067c35afd75f9a3403182b99 /python/pyspark/sql | |
| parent | c776fce99b496a789ffcf2cfab78cf51eeea032b (diff) | |
| download | spark-fb7e21797ed618d9754545a44f8f95f75b66757a.tar.gz spark-fb7e21797ed618d9754545a44f8f95f75b66757a.tar.bz2 spark-fb7e21797ed618d9754545a44f8f95f75b66757a.zip | |
[SPARK-13339][DOCS] Clarify commutative / associative operator requirements for reduce, fold
Clarify that reduce functions need to be commutative, and fold functions do not
See https://github.com/apache/spark/pull/11091
Author: Sean Owen <sowen@cloudera.com>
Closes #11217 from srowen/SPARK-13339.
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