Github user aarondav commented on a diff in the pull request:
https://github.com/apache/spark/pull/5392#discussion_r33518468
--- Diff: core/src/main/scala/org/apache/spark/deploy/worker/Worker.scala
---
@@ -235,21 +250,47 @@ private[worker] class Worker(
* still not safe if the old master recovers within this interval,
but this is a much
* less likely scenario.
*/
- if (master != null) {
- master ! RegisterWorker(
- workerId, host, port, cores, memory, webUi.boundPort,
publicAddress)
- } else {
- // We are retrying the initial registration
- tryRegisterAllMasters()
+ master match {
+ case Some(masterRef) =>
+ // registered == false && master != None means we lost the
connection to master, so
+ // masterRef cannot be used and we need to recreate it again.
Note: we must not set
+ // master to None due to the above comments.
+ if (registerMasterFutures != null) {
+ registerMasterFutures.foreach(_.cancel(true))
+ }
+ val masterAddress = masterRef.address
+ registerMasterFutures =
Array(registerMasterThreadPool.submit(new Runnable {
+ override def run(): Unit =
--- End diff --
nit: braces
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