gaborgsomogyi commented on code in PR #21511:
URL: https://github.com/apache/flink/pull/21511#discussion_r1049360305


##########
flink-runtime/src/main/java/org/apache/flink/runtime/security/modules/HadoopModule.java:
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@@ -75,6 +83,10 @@ public void install() throws SecurityInstallException {
                                         new File(fileLocation), 
hadoopConfiguration);
                         loginUser.addCredentials(credentials);
                     }
+                    tgtRenewalExecutorService =

Review Comment:
   Flink never renews tokens but re-obtains them. The DT framework overwrites 
tokens coming from other sources other then providers.



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