Github user mxm commented on a diff in the pull request:
https://github.com/apache/flink/pull/2917#discussion_r90621937
--- Diff:
flink-runtime/src/main/scala/org/apache/flink/runtime/jobmanager/JobManager.scala
---
@@ -2729,11 +2727,11 @@ object JobManager {
def getRemoteJobManagerAkkaURL(config: Configuration) : String = {
val (protocol, hostname, port) =
TaskManager.getAndCheckJobManagerAddress(config)
- var hostPort: InetSocketAddress = null
+ var hostPort: InetSocketAddress = new InetSocketAddress(hostname, port)
--- End diff --
It is just a check to see if we expect messages from a resolvable hostname.
It is not necessary to do that but I found test cases rely on that. Also, it
improves error reporting for the user in case a non-resolvable hostname was
chosen.
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