Hi,everyone I am using a hdfs client API to access a secured hdfs cluster. The kerberos have been set up successfully. When the configuration of hadoop.rpc.protection in core-site.xml is set to authentication, it works well. However, when it is set to integration or privacy, the namenode can not be connected, and the log of namenode give the following error. Does anyone know what the info mean and what lib is needed for connection in integration and privacy mode? Any hint will be very appreciated!!
2018-11-27 17:14:05,270 WARN SecurityLogger.org.apache.hadoop.ipc.Server: Auth failed for 127.0.0.1:50769:null (Problem with callback handler) 2018-11-27 17:14:05,270 INFO org.apache.hadoop.ipc.Server: Socket Reader #1 for port 8020: readAndProcess from client 127.0.0.1 threw exception [javax.security.sasl.SaslException: Problem with callback handler [Caused by javax.security.sasl.SaslException: Client selected unsupported protection: 1]] --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org
