Github user phrocker commented on the issue: https://github.com/apache/nifi/pull/1618 @mattyb149 I began with an empty password for my user and thus set an empty string. I saw an NPE in the logs, which did go away once I set a password for my user and subsequently set it in processor config. 2017-03-24 18:19:53,150 ERROR [blc-localhost:3306] org.apache.nifi.NiFi An Unknown Error Occurred in Thread Thread[blc-localhost:3306,5,main]: java.lang.NullPointerException 2017-03-24 18:19:53,155 ERROR [blc-localhost:3306] org.apache.nifi.NiFi java.lang.NullPointerException: null ââat com.github.shyiko.mysql.binlog.network.protocol.command.AuthenticateCommand.passwordCompatibleWithMySQL411(AuthenticateCommand.java:89) ~[mysql-binlog-connector-java-0.8.1.jar:na] ââat com.github.shyiko.mysql.binlog.network.protocol.command.AuthenticateCommand.toByteArray(AuthenticateCommand.java:70) ~[mysql-binlog-connector-java-0.8.1.jar:na] ââat com.github.shyiko.mysql.binlog.network.protocol.PacketChannel.write(PacketChannel.java:65) ~[mysql-binlog-connector-java-0.8.1.jar:na] ââat com.github.shyiko.mysql.binlog.BinaryLogClient.authenticate(BinaryLogClient.java:546) ~[mysql-binlog-connector-java-0.8.1.jar:na] ââat com.github.shyiko.mysql.binlog.BinaryLogClient.connect(BinaryLogClient.java:407) ~[mysql-binlog-connector-java-0.8.1.jar:na] ââat com.github.shyiko.mysql.binlog.BinaryLogClient$5.run(BinaryLogClient.java:635) ~[mysql-binlog-connector-java-0.8.1.jar:na] ââat java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_121]
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