Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/4984#discussion_r33642003
--- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala ---
@@ -1355,10 +1354,14 @@ class SparkContext(config: SparkConf) extends
Logging with ExecutorAllocationCli
/**
* Return whether dynamically adjusting the amount of resources
allocated to
- * this application is supported. This is currently only available for
YARN.
+ * this application is supported. This is currently only available for
YARN
+ * and Mesos coarse-grained mode.
*/
- private[spark] def supportDynamicAllocation =
- master.contains("yarn") ||
_conf.getBoolean("spark.dynamicAllocation.testing", false)
+ private[spark] def supportDynamicAllocation = {
--- End diff --
not your code, but can you add return type `Boolean` here
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