Github user andrewor14 commented on a diff in the pull request: https://github.com/apache/spark/pull/4665#discussion_r25037005 --- Diff: docs/configuration.md --- @@ -221,6 +234,10 @@ Apart from these, the following properties are also available, and may be useful <td>(none)</td> <td> Extra classpath entries to append to the classpath of the driver. + + <br /><em>Note:</em> In client mode, this config must not be set through the <code>SparkConf</code> + directly in your application, because the driver JVM has already started at that point. + Instead, please set this through the default properties file.</td> --- End diff -- you should add the command line option here `--driver-class-path`
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