https://community.cloudera.com/t5/Support-Questions/Cloudera-Kafka-HDFS-Sink-Connector-cannot-connect-to-simple/m-p/336495#M232269 <P>I've recovered this error. It was caused by wrong hdfs.uri</P> Thu, 17 Feb 2022 08:57:07 GMT namutree 2022-02-17T08:57:07Z https://community.cloudera.com/t5/Support-Questions/Cloudera-Kafka-HDFS-Sink-Connector-cannot-connect-to-simple/m-p/336488#M232264 <P>I've encountered this error log at cloudera HDFS sink connector. (I erased only hostname)</P><P>&nbsp;</P><PRE><SPAN>org.apache.kafka.connect.errors.ConnectException: org.apache.kafka.connect.errors.ConnectException: java.io.IOException: DestHost:destPort&nbsp;<BR />Failed on local exception: java.io.IOException: Server asks us to fall back to SIMPLE auth, but this client is configured to only allow secure connections.&nbsp;</SPAN></PRE><P>&nbsp;</P><P>As this log says, the destination HDFS uses SIMPLE authentication.&nbsp;(<SPAN>hadoop.security.authentication=simple)</SPAN></P><P><SPAN>Is there any way to connect cloudera HDFS sink connector to HDFS with simple authentication?</SPAN></P> Tue, 21 Apr 2026 08:00:52 GMT https://community.cloudera.com/t5/Support-Questions/Cloudera-Kafka-HDFS-Sink-Connector-cannot-connect-to-simple/m-p/336488#M232264 namutree 2026-04-21T08:00:52Z https://community.cloudera.com/t5/Support-Questions/Cloudera-Kafka-HDFS-Sink-Connector-cannot-connect-to-simple/m-p/336495#M232269 <P>I've recovered this error. It was caused by wrong hdfs.uri</P> Thu, 17 Feb 2022 08:57:07 GMT https://community.cloudera.com/t5/Support-Questions/Cloudera-Kafka-HDFS-Sink-Connector-cannot-connect-to-simple/m-p/336495#M232269 namutree 2022-02-17T08:57:07Z