Github user tnachen commented on a diff in the pull request:
https://github.com/apache/spark/pull/2161#discussion_r16799232
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/CoarseMesosSchedulerBackend.scala
---
@@ -139,16 +145,16 @@ private[spark] class CoarseMesosSchedulerBackend(
if (uri == null) {
val runScript = new File(sparkHome,
"./bin/spark-class").getCanonicalPath
--- End diff --
It's confusing what the expectation of where spark lives, but if you don't
specify a SPARK_EXECUTOR_URI then with the current code we're expecting it to
be installed on each Mesos slave at the same location where you're launching
your spark shell.
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