Github user vanzin commented on a diff in the pull request: https://github.com/apache/spark/pull/19272#discussion_r146436646 --- Diff: resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/security/AMCredentialRenewer.scala --- @@ -59,8 +59,7 @@ private[yarn] class AMCredentialRenewer( private var lastCredentialsFileSuffix = 0 private val credentialRenewer = - Executors.newSingleThreadScheduledExecutor( - ThreadUtils.namedThreadFactory("Credential Refresh Thread")) + ThreadUtils.newDaemonSingleThreadScheduledExecutor("Credential Refresh Thread") --- End diff -- Normally you should avoid making changes that are not related to your PR.
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