Github user tgravescs commented on a diff in the pull request: https://github.com/apache/spark/pull/8867#discussion_r40679882 --- Diff: yarn/src/main/scala/org/apache/spark/deploy/yarn/ExecutorDelegationTokenUpdater.scala --- @@ -76,7 +76,10 @@ private[spark] class ExecutorDelegationTokenUpdater( SparkHadoopUtil.get.getTimeFromNowToRenewal( sparkConf, 0.8, UserGroupInformation.getCurrentUser.getCredentials) if (timeFromNowToRenewal <= 0) { - executorUpdaterRunnable.run() + // If the `timeFromNowToRenewal` equals 0, it's better to wait 1 minutes to schedule for + // avoid cycle calling and cause StackOverflow Exception. --- End diff -- can you explain?
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