Hi Alek, Thanks for the explanation, it is very helpful.
Cheers, Wei 2015-06-25 13:40 GMT-07:00 Eskilson,Aleksander <alek.eskil...@cerner.com>: > Hi there, > > The tutorial you’re reading there was written before the merge of SparkR > for Spark 1.4.0 > For the merge, the RDD API (which includes the textFile() function) was > made private, as the devs felt many of its functions were too low level. > They focused instead on finishing the DataFrame API which supports local, > HDFS, and Hive/HBase file reads. In the meantime, the devs are trying to > determine which functions of the RDD API, if any, should be made public > again. You can see the rationale behind this decision on the issue’s JIRA > [1]. > > You can still make use of those now private RDD functions by prepending > the function call with the SparkR private namespace, for example, you’d use > SparkR:::textFile(…). > > Hope that helps, > Alek > > [1] -- https://issues.apache.org/jira/browse/SPARK-7230 > > From: Wei Zhou <zhweisop...@gmail.com> > Date: Thursday, June 25, 2015 at 3:33 PM > To: "user@spark.apache.org" <user@spark.apache.org> > Subject: sparkR could not find function "textFile" > > Hi all, > > I am exploring sparkR by activating the shell and following the tutorial > here https://amplab-extras.github.io/SparkR-pkg/ > <https://urldefense.proofpoint.com/v2/url?u=https-3A__amplab-2Dextras.github.io_SparkR-2Dpkg_&d=AwMFaQ&c=NRtzTzKNaCCmhN_9N2YJR-XrNU1huIgYP99yDsEzaJo&r=0vZw1rBdgaYvDJYLyKglbrax9kvQfRPdzxLUyWSyxPM&m=aL4A2Pv9tHbhgJUX-EnuYx2HntTnrqVpegm6Ag-FwnQ&s=qfOET1UvP0ECAKgnTJw8G13sFTi_PhiJ8Q89fMSgH_Q&e=> > > And when I tried to read in a local file with textFile(sc, > "file_location"), it gives an error could not find function "textFile". > > By reading through sparkR doc for 1.4, it seems that we need sqlContext > to import data, for example. > > people <- read.df(sqlContext, "./examples/src/main/resources/people.json", > "json" > > ) > And we need to specify the file type. > > My question is does sparkR stop supporting general type file importing? > If not, would appreciate any help on how to do this. > > PS, I am trying to recreate the word count example in sparkR, and want > to import README.md file, or just any file into sparkR. > > Thanks in advance. > > Best, > Wei > > CONFIDENTIALITY NOTICE This message and any included attachments are > from Cerner Corporation and are intended only for the addressee. The > information contained in this message is confidential and may constitute > inside or non-public information under international, federal, or state > securities laws. Unauthorized forwarding, printing, copying, distribution, > or use of such information is strictly prohibited and may be unlawful. If > you are not the addressee, please promptly delete this message and notify > the sender of the delivery error by e-mail or you may call Cerner's > corporate offices in Kansas City, Missouri, U.S.A at (+1) (816)221-1024. >
