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From Hossein <fal...@gmail.com>
Subject Re: SparkR package path
Date Wed, 23 Sep 2015 17:41:58 GMT
Yes, I think exposing SparkR in CRAN can significantly expand the reach of
both SparkR and Spark itself to a larger community of data scientists (and
statisticians).

I have been getting questions on how to use SparkR in RStudio. Most of
these folks have a Spark Cluster and wish to talk to it from RStudio. While
that is a bigger task, for now, first step could be not requiring them to
download Spark source and run a script that is named install-dev.sh. I
filed SPARK-10776 to track this.


--Hossein

On Tue, Sep 22, 2015 at 7:21 PM, Shivaram Venkataraman <
shivaram@eecs.berkeley.edu> wrote:

> As Rui says it would be good to understand the use case we want to
> support (supporting CRAN installs could be one for example). I don't
> think it should be very hard to do as the RBackend itself doesn't use
> the R source files. The RRDD does use it and the value comes from
>
> https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/api/r/RUtils.scala#L29
> AFAIK -- So we could introduce a new config flag that can be used for
> this new mode.
>
> Thanks
> Shivaram
>
> On Mon, Sep 21, 2015 at 8:15 PM, Sun, Rui <rui.sun@intel.com> wrote:
> > Hossein,
> >
> >
> >
> > Any strong reason to download and install SparkR source package
> separately
> > from the Spark distribution?
> >
> > An R user can simply download the spark distribution, which contains
> SparkR
> > source and binary package, and directly use sparkR. No need to install
> > SparkR package at all.
> >
> >
> >
> > From: Hossein [mailto:falaki@gmail.com]
> > Sent: Tuesday, September 22, 2015 9:19 AM
> > To: dev@spark.apache.org
> > Subject: SparkR package path
> >
> >
> >
> > Hi dev list,
> >
> >
> >
> > SparkR backend assumes SparkR source files are located under
> > "SPARK_HOME/R/lib/." This directory is created by running
> R/install-dev.sh.
> > This setting makes sense for Spark developers, but if an R user downloads
> > and installs SparkR source package, the source files are going to be in
> > placed different locations.
> >
> >
> >
> > In the R runtime it is easy to find location of package files using
> > path.package("SparkR"). But we need to make some changes to R backend
> and/or
> > spark-submit so that, JVM process learns the location of worker.R and
> > daemon.R and shell.R from the R runtime.
> >
> >
> >
> > Do you think this change is feasible?
> >
> >
> >
> > Thanks,
> >
> > --Hossein
>

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