Github user tzulitai commented on a diff in the pull request: https://github.com/apache/flink/pull/5172#discussion_r165635517 --- Diff: flink-yarn/src/main/java/org/apache/flink/yarn/YarnApplicationMasterRunner.java --- @@ -170,9 +160,10 @@ protected int run(String[] args) { final Configuration flinkConfig = createConfiguration(currDir, dynamicProperties); - // set keytab principal and replace path with the local path of the shipped keytab file in NodeManager - if (keytabPath != null && remoteKeytabPrincipal != null) { - flinkConfig.setString(SecurityOptions.KERBEROS_LOGIN_KEYTAB, keytabPath); + File f = new File(currDir, Utils.KEYTAB_FILE_NAME); + if (remoteKeytabPrincipal != null && f.exists()) { --- End diff -- Can we re-add the debug log `LOG.debug("keytabPath: {}", keytabPath);` to provide more visibility to this?
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