Delete Unexpected from Cloudera Manager

I have cloudera manager 5.0.0 installed in my small cluster, tried to delete some nodes and then found cloudera manager not working, exceptions thrown in the landing page and 500 in the hosts page, almost null pointer exception everywhere. Next time when I restart cm and log into CM, agent upgrading guide begins again. Here … Continue reading “Delete Unexpected from Cloudera Manager”

CDH 4 HA Related Problems

Problem I meet ‘Failed to initialize High Availability state in ZooKeeper. This might be because a ZNode for this nameservice is already created. Either remove the ZNode, or to reuse the ZNode skip this step and simply start the NameNodes and Failover Controllers. To retry, use the “Initialize High Availability state in ZooKeeper” command available … Continue reading “CDH 4 HA Related Problems”