srowen commented on a change in pull request #23685:
[SPARK-26771][CORE][GRAPHX] Make .unpersist(), .destroy() consistently
non-blocking by default
URL: https://github.com/apache/spark/pull/23685#discussion_r252434984
##########
File path: core/src/main/scala/org/apache/spark/rdd/RDD.scala
##########
@@ -212,11 +212,11 @@ abstract class RDD[T: ClassTag](
/**
* Mark the RDD as non-persistent, and remove all blocks for it from memory
and disk.
*
- * @param blocking Whether to block until all blocks are deleted.
+ * @param blocking Whether to block until all blocks are deleted; default is
false
* @return This RDD.
*/
- def unpersist(blocking: Boolean = true): this.type = {
- logInfo("Removing RDD " + id + " from persistence list")
+ def unpersist(blocking: Boolean = false): this.type = {
+ logInfo(s"Removing RDD $id from persistence list")
Review comment:
Will do. We also don't have a similar note about freeing broadcasts, so I'll
add a few sentences about it.
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