Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/14744#discussion_r76173164
--- Diff: docs/configuration.md ---
@@ -1752,6 +1752,14 @@ showDF(properties, numRows = 200, truncate = FALSE)
Executable for executing R scripts in client modes for driver. Ignored
in cluster modes.
</td>
</tr>
+<tr>
+ <td><code>spark.r.shell.command</code></td>
+ <td>R</td>
+ <td>
+ Executable for executing sparkR shell in client modes for driver.
Ignored in cluster modes. It is the same as environment variable
<code>SPARKR_DRIVER_R</code>, but take precedence over it.
+ <code>spark.r.shell.command</code> is used for interactive mode of
sparkR (sparkR shell) while <code>spark.r.driver.command</code> is used for the
batch mode (running sparkR script).
--- End diff --
Hmm, I'm not entirely following.
`sparkR` is the name of the shell script that an user can run from
commandline/their shell (lower case)
`SparkR` is how we could call R support of Spark (upper case)
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