Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/2615#discussion_r19260454
--- Diff: bin/compute-classpath.sh ---
@@ -20,7 +20,7 @@
# This script computes Spark's classpath and prints it to stdout; it's
used by both the "run"
# script and the ExecutorRunner in standalone cluster mode.
-SCALA_VERSION=2.10
+SCALA_VERSION=${SCALA_VERSION:-"2.10"}
--- End diff --
I think if a user has compiled classes for both at the same time, it's
better to ask them to clean one or the other. Otherwise there could be really
complicated bugs where we are actually picking up Scala 2.10 source code but
running with Scala 2.11, right?
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