Github user liyinan926 commented on a diff in the pull request:
https://github.com/apache/spark/pull/21366#discussion_r190956726
--- Diff:
resource-managers/kubernetes/core/src/main/scala/org/apache/spark/scheduler/cluster/k8s/KubernetesClusterManager.scala
---
@@ -56,17 +56,43 @@ private[spark] class KubernetesClusterManager extends
ExternalClusterManager wit
Some(new File(Config.KUBERNETES_SERVICE_ACCOUNT_TOKEN_PATH)),
Some(new File(Config.KUBERNETES_SERVICE_ACCOUNT_CA_CRT_PATH)))
- val allocatorExecutor = ThreadUtils
- .newDaemonSingleThreadScheduledExecutor("kubernetes-pod-allocator")
val requestExecutorsService = ThreadUtils.newDaemonCachedThreadPool(
--- End diff --
This also needs to be shutdown.
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