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| author | Yu ISHIKAWA <yuu.ishikawa@gmail.com> | 2015-08-16 23:33:20 -0700 |
|---|---|---|
| committer | Shivaram Venkataraman <shivaram@cs.berkeley.edu> | 2015-08-16 23:33:20 -0700 |
| commit | 26e760581fdf7ca913da93fa80e73b7ddabcedf6 (patch) | |
| tree | dad5d9a89680c2a84a844d3d3a885cbb672f7073 /make-distribution.sh | |
| parent | ae2370e72f93db8a28b262e8252c55fe1fc9873c (diff) | |
| download | spark-26e760581fdf7ca913da93fa80e73b7ddabcedf6.tar.gz spark-26e760581fdf7ca913da93fa80e73b7ddabcedf6.tar.bz2 spark-26e760581fdf7ca913da93fa80e73b7ddabcedf6.zip | |
[SPARK-9871] [SPARKR] Add expression functions into SparkR which have a variable parameter
### Summary
- Add `lit` function
- Add `concat`, `greatest`, `least` functions
I think we need to improve `collect` function in order to implement `struct` function. Since `collect` doesn't work with arguments which includes a nested `list` variable. It seems that a list against `struct` still has `jobj` classes. So it would be better to solve this problem on another issue.
### JIRA
[[SPARK-9871] Add expression functions into SparkR which have a variable parameter - ASF JIRA](https://issues.apache.org/jira/browse/SPARK-9871)
Author: Yu ISHIKAWA <yuu.ishikawa@gmail.com>
Closes #8194 from yu-iskw/SPARK-9856.
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