Github user sryza commented on a diff in the pull request:
https://github.com/apache/spark/pull/5751#discussion_r29277660
--- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala ---
@@ -1387,6 +1387,11 @@ class SparkContext(config: SparkConf) extends
Logging with ExecutorAllocationCli
* Register an RDD to be persisted in memory and/or disk storage
*/
private[spark] def persistRDD(rdd: RDD[_]) {
+ _executorAllocationManager.foreach { _ =>
+ logWarning(
+ s"Dynamic allocation currently does not support cached RDDs.
Cached data for RDD " +
+ s"${rdd.id} will be deallocated when executors are removed.")
--- End diff --
nit: can we say "lost" instead of "deallocated"? Deallocate has a
connotation to me of purposely returned to a pool, where as this is more a
situation of unpurposely returned to nowhere accessible.
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