gaborgsomogyi commented on code in PR #19372:
URL: https://github.com/apache/flink/pull/19372#discussion_r849363213
##########
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've tested it on cluster and works like charm so closing this discussion.
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