Hi, I'm using kafka service KAFKA-2.1.0-1.2.1.0.p0.115. `kafka-console-consumer --topic test3 --from-beginning --zookeeper cdh-1:2181` works well. `kafka-console-consumer --bootstrap-server cdh-1:9092 --topic test3 --from-beginning --zookeeper cdh-1:2181 --new-consumer`, however, keep throwing "cannot auto-commit offsets for group since the coordinator is unknown"   does anyone have any idea? thanks a lot.       ... View more

Hi, I have a cluster consist of 7 nodes. Ony ONE of the node delete the activited parcels every time after restart. It delete all the files in /opt/cloudera/parcels except the soft links. Could anyone help me? Thanks. ... View more

 Hi, I'm trying to enable authorization system in Cloudera. I'm reading this link https://www.cloudera.com/documentation/enterprise/5-3-x/topics/cm_sg_ldap_grp_mappings.html . Q0: Why can we use LdapGroupsMapping in production environment? I would like to use Apache Zeppline to integreted Apache Spark. I would like to use LDAP as a unifined account system. Q1: If I use org.apache.hadoop.security.ShellBasedUnixGroupsMapping, Should I create users and groups in EVERY host in my cluster? Q2: If I use org.apache.hadoop.security.LdapGroupsMapping. When new users and groups are created, will they sync to EVERY host in my cluster? Q3:When adding new service in Cloudera Manager, for example, kafka service, will `kafka` user created both in LDAP database and EVERY host in my cluster? Q4: I've enabled MIT kerberos in my cluster. Can I submit task from Windows IDE with proper kerberos keytab files. For example, using impyla in Python in Windows machine. ... View more