## What changes were proposed in this pull request?
This PR proposes to support a DDL-formetted string as schema as below:
```r
mockLines <- c("{\"name\":\"Michael\"}",
"{\"name\":\"Andy\", \"age\":30}",
"{\"name\":\"Justin\", \"age\":19}")
jsonPath <- tempfile(pattern = "sparkr-test", fileext = ".tmp")
writeLines(mockLines, jsonPath)
df <- read.df(jsonPath, "json", "name STRING, age DOUBLE")
collect(df)
```
## How was this patch tested?
Tests added in `test_streaming.R` and `test_sparkSQL.R` and manual tests.
Author: hyukjinkwon <gurwls223@gmail.com>
Closes#18431 from HyukjinKwon/r-ddl-schema.
## What changes were proposed in this pull request?
Extend `setJobDescription` to SparkR API.
## How was this patch tested?
It looks difficult to add a test. Manually tested as below:
```r
df <- createDataFrame(iris)
count(df)
setJobDescription("This is an example job.")
count(df)
```
prints ...
Author: hyukjinkwon <gurwls223@gmail.com>
Closes#18382 from HyukjinKwon/SPARK-21149.
## What changes were proposed in this pull request?
PR https://github.com/apache/spark/pull/17715 Added Constrained Logistic Regression for ML. We should add it to SparkR.
## How was this patch tested?
Add new unit tests.
Author: wangmiao1981 <wm624@hotmail.com>
Closes#18128 from wangmiao1981/test.
## What changes were proposed in this pull request?
Add `stringIndexerOrderType` to `spark.glm` and `spark.survreg` to support string encoding that is consistent with default R.
## How was this patch tested?
new tests
Author: actuaryzhang <actuaryzhang10@gmail.com>
Closes#18140 from actuaryzhang/sparkRFormula.
## What changes were proposed in this pull request?
Add SQL trunc function
## How was this patch tested?
standard test
Author: actuaryzhang <actuaryzhang10@gmail.com>
Closes#18291 from actuaryzhang/sparkRTrunc2.
## What changes were proposed in this pull request?
clean up after big test move
## How was this patch tested?
unit tests, jenkins
Author: Felix Cheung <felixcheung_m@hotmail.com>
Closes#18267 from felixcheung/rtestset2.
## What changes were proposed in this pull request?
Move all existing tests to non-installed directory so that it will never run by installing SparkR package
For a follow-up PR:
- remove all skip_on_cran() calls in tests
- clean up test timer
- improve or change basic tests that do run on CRAN (if anyone has suggestion)
It looks like `R CMD build pkg` will still put pkg\tests (ie. the full tests) into the source package but `R CMD INSTALL` on such source package does not install these tests (and so `R CMD check` does not run them)
## How was this patch tested?
- [x] unit tests, Jenkins
- [x] AppVeyor
- [x] make a source package, install it, `R CMD check` it - verify the full tests are not installed or run
Author: Felix Cheung <felixcheung_m@hotmail.com>
Closes#18264 from felixcheung/rtestset.
