GitHub user chenghao-intel opened a pull request:
https://github.com/apache/spark/pull/6104
[SPARK-7322] [SQL] [WIP] Support Window Function in DataFrame
This is a WIP PR for early feedback.
The usage is kind of like:
```scala
df.select(
$"key",
$"value".over
.orderBy($"value")
.partitionBy($"key")
.rowsFollowing(1)
.rowsPreceding(1).avg($"key"))
```
- [x] API design
- [ ] Add More window function API support
- [ ] Scala Doc
- [ ] More specific Unit Test
@rxin @yhuai
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/chenghao-intel/spark df_window
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/6104.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #6104
----
commit 4368a81bbd88ea8be4135f136cf4471b08ffca41
Author: Cheng Hao <[email protected]>
Date: 2015-05-13T02:52:48Z
early feedback
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