Github user chtyim commented on a diff in the pull request: https://github.com/apache/twill/pull/7#discussion_r76454783 --- Diff: twill-yarn/src/main/java/org/apache/twill/yarn/YarnTwillRunnerService.java --- @@ -211,7 +226,7 @@ public String getJVMOptions() { @Override public Cancellable scheduleSecureStoreUpdate(final SecureStoreUpdater updater, long initialDelay, long delay, TimeUnit unit) { - if (!UserGroupInformation.isSecurityEnabled()) { + if (!UserGroupInformation.isSecurityEnabled() || !enableSecureStoreUpdate) { --- End diff -- You shouldn't disable this one. Otherwise user won't be able to schedule his own update. We should only disable the default one by Twill (the one that update HDFS delegation tokens in `startUp`).
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