Felix Cheung f4767bcc7a [SPARK-16310][SPARKR] R na.string-like default for csv source ... ## What changes were proposed in this pull request? Apply default "NA" as null string for R, like R read.csv na.string parameter. https://stat.ethz.ch/R-manual/R-devel/library/utils/html/read.table.html na.strings = "NA" An user passing a csv file with NA value should get the same behavior with SparkR read.df(... source = "csv") (couldn't open JIRA, will do that later) ## How was this patch tested? unit tests shivaram Author: Felix Cheung <felixcheung_m@hotmail.com> Closes #13984 from felixcheung/rcsvnastring.		2016-07-07 15:21:57 -07:00
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testthat	[SPARK-16310][SPARKR] R na.string-like default for csv source	2016-07-07 15:21:57 -07:00