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| author | felixcheung <felixcheung_m@hotmail.com> | 2015-11-18 23:32:49 -0800 |
|---|---|---|
| committer | Shivaram Venkataraman <shivaram@cs.berkeley.edu> | 2015-11-18 23:32:49 -0800 |
| commit | 1a93323c5bab18ed7e55bf6f7b13aae88cb9721c (patch) | |
| tree | e1c867c4d8e04248bf3aa89f3263a85ad87ef9f3 /.rat-excludes | |
| parent | d02d5b9295b169c3ebb0967453b2835edb8a121f (diff) | |
| download | spark-1a93323c5bab18ed7e55bf6f7b13aae88cb9721c.tar.gz spark-1a93323c5bab18ed7e55bf6f7b13aae88cb9721c.tar.bz2 spark-1a93323c5bab18ed7e55bf6f7b13aae88cb9721c.zip | |
[SPARK-11339][SPARKR] Document the list of functions in R base package that are masked by functions with same name in SparkR
Added tests for function that are reported as masked, to make sure the base:: or stats:: function can be called.
For those we can't call, added them to SparkR programming guide.
It would seem to me `table, sample, subset, filter, cov` not working are not actually expected - I investigated/experimented with them but couldn't get them to work. It looks like as they are defined in base or stats they are missing the S3 generic, eg.
```
> methods("transform")
[1] transform,ANY-method transform.data.frame
[3] transform,DataFrame-method transform.default
see '?methods' for accessing help and source code
> methods("subset")
[1] subset.data.frame subset,DataFrame-method subset.default
[4] subset.matrix
see '?methods' for accessing help and source code
Warning message:
In .S3methods(generic.function, class, parent.frame()) :
function 'subset' appears not to be S3 generic; found functions that look like S3 methods
```
Any idea?
More information on masking:
http://www.ats.ucla.edu/stat/r/faq/referencing_objects.htm
http://www.sfu.ca/~sweldon/howTo/guide4.pdf
This is what the output doc looks like (minus css):
Author: felixcheung <felixcheung_m@hotmail.com>
Closes #9785 from felixcheung/rmasked.
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