apache/spark — pull request #3785 by YanTangZhai (2014-12-24 06:20:40+00:00)
Title: [SPARK-4946] [CORE] Using AkkaUtils.askWithReply in MapOutputTracker.askTracker to reduce the chance of the communicating problem

Using AkkaUtils.askWithReply in MapOutputTracker.askTracker to reduce the chance of the communicating problem