Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/1328#discussion_r15220164
--- Diff: core/src/main/scala/org/apache/spark/MapOutputTracker.scala ---
@@ -340,6 +459,7 @@ private[spark] class MapOutputTrackerMaster(conf:
SparkConf)
*/
private[spark] class MapOutputTrackerWorker(conf: SparkConf) extends
MapOutputTracker(conf) {
protected val mapStatuses = new HashMap[Int, Array[MapStatus]]
+ with mutable.SynchronizedMap[Int, Array[MapStatus]]
--- End diff --
I think `ConcurrentHashMap` is better in most cases.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
