gaborgsomogyi commented on code in PR #19372: URL: https://github.com/apache/flink/pull/19372#discussion_r847413385
########## flink-runtime/src/main/java/org/apache/flink/runtime/security/token/KerberosDelegationTokenManager.java: ########## @@ -110,13 +126,84 @@ public void obtainDelegationTokens(Credentials credentials) { * task managers. */ @Override - public void start() { - LOG.info("Starting renewal task"); + public void start() throws Exception { + checkState(renewalExecutor == null, "Manager is already started"); + + if (!isRenewalPossible()) { + LOG.info("Renewal is NOT possible, skipping to start renewal task"); + return; + } + + ThreadFactory threadFactory = + new ThreadFactoryBuilder() + .setDaemon(true) + .setNameFormat("Credential Renewal Thread") + .build(); + renewalExecutor = new ScheduledThreadPoolExecutor(1, threadFactory); Review Comment: I'm fine w/ using the already existing executors but I don't see any `ComponentMainThreadExecutor` in `ResourceManager`. Can you point where can I find it to pass to DTM? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org