https://lukehebert.com/tag/bigdata/Recent content in Bigdata on Luke HebertHugoen-usThu, 04 Feb 2021 00:00:00 +0000https://lukehebert.com/post/spark-token-debug/Thu, 04 Feb 2021 00:00:00 +0000https://lukehebert.com/post/spark-token-debug/Enable verbose Kerberos and token logging on Spark driver and executor nodes to capture the diagnostic data you need when authentication is failing. Covers log4j configuration files and the exact spark-submit flags to wire them in.https://lukehebert.com/post/cannot-find-key-of-the-appropriate-type-to-decrypt-ap-rep/Tue, 03 Nov 2020 00:00:00 +0000https://lukehebert.com/post/cannot-find-key-of-the-appropriate-type-to-decrypt-ap-rep/A troubleshooting guide for the Kerberos error ‘Cannot find key of the appropriate type to decrypt AP REP,’ covering encryption type mismatches between keytabs and Active Directory, plus practical steps to align AES and RC4 settings.