LennonChin commented on code in PR #4435:
URL: https://github.com/apache/hadoop/pull/4435#discussion_r1062171496
##########
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/security/DelegationTokenRenewer.java:
##########
@@ -996,6 +996,22 @@ public void run() {
@Override
public void run() {
while (true) {
+ if (futures.isEmpty()) {
+ synchronized (this) {
+ try {
+ // waiting for tokenRenewerThreadTimeout milliseconds
+ long waitingTimeMs = Math.min(10000, Math.max(500,
tokenRenewerThreadTimeout));
Review Comment:
> @slfan1989 what do you suggest increasing them to?
I think he means to add a configuration to control the waiting time.
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