Github user sryza commented on a diff in the pull request:
https://github.com/apache/spark/pull/3339#discussion_r20490313
--- Diff: docs/building-spark.md ---
@@ -113,7 +113,17 @@ mvn -Pyarn -Phive -Phive-thriftserver-0.12.0
-Phadoop-2.4 -Dhadoop.version=2.4.0
{% endhighlight %}
# Building for Scala 2.11
-To produce a Spark package compiled with Scala 2.11, use the
`-Dscala-2.11` property:
+### For SBT users just start the console as
+
+`sbt/sbt -Pscala-2.11`
+
+And then run the commands as usual, e.g. clean, assembly or test etc..
+
+### For maven users it is a two step process.
+
+Step 1: First run `dev/change-version-to-2.11.sh` script from
`$SPARK_HOME`.
--- End diff --
Nit: the rest of the directions don't mention SPARK_HOME and just assume
that all commands are run from the project root directory. If we want to be
more explicit on this, we should should probably spell it out near the top
instead of for this particular command.
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