vanzin commented on a change in pull request #23525: [SPARK-26595][core] Allow
credential renewal based on kerberos ticket cache.
URL: https://github.com/apache/spark/pull/23525#discussion_r250321692
##########
File path:
core/src/main/scala/org/apache/spark/deploy/security/HadoopDelegationTokenManager.scala
##########
@@ -118,7 +127,7 @@ private[spark] class HadoopDelegationTokenManager(
def stop(): Unit = {
if (renewalExecutor != null) {
- renewalExecutor.shutdown()
+ renewalExecutor.shutdownNow()
Review comment:
`shutdown` doesn't stop the executor. Any schedule tasks will still be run.
So the executor might stay up for about a day if there's a renewal task
scheduled.
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