@Gerd Koenig The question here is are you running Apache NiFi 0.6 or HDF 1.2? I believe you are using Apache NiFi 0.6 which does not understand PLAINTEXTSASL as the security protocol. The Kafka 0.8 in HDP 2.3.2 and the Kafka 0.9 in HDP 2.3.4 use a custom Hortonworks Kafka client library. Kafka 0.8 in HDP 2.3.2 introduced support for kerberos before it was supported in the community. That support introduced the PLAINTEXTSASL security protocol. later when Apache Kafka 0.9 added kerberos support they used a different security protocol (SASL_PLAINTEXT). In order for HDF 1.2 to work with HDP 2.3.2, the GetKafka processor was modified from the Apache GetKafka to use that modified client library. Hortonworks again modified the client lib in HDP 2.3.4 for Kafka 0.9 so that it was backwards compatible and still supported the PLAINTEXTSASL security protocol. So bottom line here is that HDF 1.2 NiFi can talk kerberos to both HDP 2.3.2 (Kafka 0.8) and HDP 2.3.4 (Kafka 0.9), but Apache NiFi cannot. The NiFi consume and publish Kafka processor available in NiFi 0.7, NiFi 1.0, and HDF 2.0 do not use the Hortonworks custom Kafka client lib and can be used with Kafka 0.9 but not Kafka 0.8. You will need to use the SASL_PLAINTEXT security protocol with these new processors. Thanks, Matt
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