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| author | JihongMa <linlin200605@gmail.com> | 2015-09-12 10:17:15 -0700 |
|---|---|---|
| committer | Davies Liu <davies.liu@gmail.com> | 2015-09-12 10:17:15 -0700 |
| commit | f4a22808e03fa12bfe1bfc82cf713cfda7e063a9 (patch) | |
| tree | 49d22700542e44203793940eb28341e8df573cd5 /bagel/src | |
| parent | 22730ad54d681ad30e63fe910e8d89360853177d (diff) | |
| download | spark-f4a22808e03fa12bfe1bfc82cf713cfda7e063a9.tar.gz spark-f4a22808e03fa12bfe1bfc82cf713cfda7e063a9.tar.bz2 spark-f4a22808e03fa12bfe1bfc82cf713cfda7e063a9.zip | |
[SPARK-6548] Adding stddev to DataFrame functions
Adding STDDEV support for DataFrame using 1-pass online /parallel algorithm to compute variance. Please review the code change.
Author: JihongMa <linlin200605@gmail.com>
Author: Jihong MA <linlin200605@gmail.com>
Author: Jihong MA <jihongma@jihongs-mbp.usca.ibm.com>
Author: Jihong MA <jihongma@Jihongs-MacBook-Pro.local>
Closes #6297 from JihongMA/SPARK-SQL.
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