vanzin commented on issue #24204: [SPARK-27270][SS] Add Kafka dynamic JAAS authentication debug possibility URL: https://github.com/apache/spark/pull/24204#issuecomment-478178235 > It provides different kind of debug log entries just like HADOOP_JAAS_DEBUG I didn't ask about that option. I asked about `sun.security.krb5.debug` which is the system property to enable the exact thing you're enabling here with another config. The only advantage I see here is to only enable that option for the kafka login, but is that really an advantage that justifies adding a new config option that people won't necessarily know about, when everybody who has to debug kerberos one time or another has to deal with that system property? Did you try setting that system property and seeing whether it shows the things you want to see when debugging?
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