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| author | wangzhenhua <wangzhenhua@huawei.com> | 2017-04-01 22:19:08 +0800 |
|---|---|---|
| committer | Wenchen Fan <wenchen@databricks.com> | 2017-04-01 22:19:08 +0800 |
| commit | 2287f3d0b85730995bedc489a017de5700d6e1e4 (patch) | |
| tree | 5146b42f6f31a66c5e98486c38a9155de8b580a7 /README.md | |
| parent | 89d6822f722912d2b05571a95a539092091650b5 (diff) | |
| download | spark-2287f3d0b85730995bedc489a017de5700d6e1e4.tar.gz spark-2287f3d0b85730995bedc489a017de5700d6e1e4.tar.bz2 spark-2287f3d0b85730995bedc489a017de5700d6e1e4.zip | |
[SPARK-20186][SQL] BroadcastHint should use child's stats
## What changes were proposed in this pull request?
`BroadcastHint` should use child's statistics and set `isBroadcastable` to true.
## How was this patch tested?
Added a new stats estimation test for `BroadcastHint`.
Author: wangzhenhua <wangzhenhua@huawei.com>
Closes #17504 from wzhfy/broadcastHintEstimation.
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