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| author | Sameer Agarwal <sameer@databricks.com> | 2016-03-25 12:57:26 -0700 |
|---|---|---|
| committer | Davies Liu <davies.liu@gmail.com> | 2016-03-25 12:57:26 -0700 |
| commit | afd0debe075e9ea8466e384932a513ef0188273c (patch) | |
| tree | 008fa22edf6907e460920b975aebb0333a5f1f84 /mllib/src/test/scala/org | |
| parent | ca003354da5e738e97418efc5af07be071c16d8f (diff) | |
| download | spark-afd0debe075e9ea8466e384932a513ef0188273c.tar.gz spark-afd0debe075e9ea8466e384932a513ef0188273c.tar.bz2 spark-afd0debe075e9ea8466e384932a513ef0188273c.zip | |
[SPARK-14137] [SPARK-14150] [SQL] Infer IsNotNull constraints from non-nullable attributes
## What changes were proposed in this pull request?
This PR adds support for automatically inferring `IsNotNull` constraints from any non-nullable attributes that are part of an operator's output. This also fixes the issue that causes the optimizer to hit the maximum number of iterations for certain queries in https://github.com/apache/spark/pull/11828.
## How was this patch tested?
Unit test in `ConstraintPropagationSuite`
Author: Sameer Agarwal <sameer@databricks.com>
Closes #11953 from sameeragarwal/infer-isnotnull.
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