Since the OS version is not supported, Cloudera Support will be unable to support the cluster. However if you do have a support contract, I'd suggest talking to your account rep who can provide a definite answer. ... View more

> GenericJDBCException: Could not open connection This implies Cloudera Manager is unable to connect to the database. If you're using the embedded postgresql database, ensure it is running. Visit the file /etc/cloudera-scm-server/db.properties. Use the authentication creds in it and try to connect to the database directly, like "psql -U user -p password database". Does it work? ... View more

Debian 8.0 is not a supported OS as of C5.3.0. As an alternative you could install CM and CDH using tarballs, Path C. ref: http://www.cloudera.com/content/cloudera/en/documentation/core/latest/topics/installation_installation.html ... View more

When managing multiple clusters with the same instance of Cloudera Manager, each cluster can be on a different version and can be upgraded independent of each other. While having all three environments managed by the same Cloudera Manager seems attractive, it doesn't offer the flexibility of having three truly independent clusters, each with its own Cloudera Manager instance. ... View more

Hii there, Finally I mounted /dev/mb3 on /mtn. And Cloduera take it by default. Thank you for your help. ... View more

thx it works now. the hareware of the machine was too old and RAM too low. ... View more

From what I understand till now, the issues only appear on datanodes which are containing a large number of blocks and these datanodes contain far more blocks than the healthy ones. This can be remedied by running the HDFS Balancer.   In CDH 5.x, bug HDFS-6621 affects balancer performance. It is fixed in the GA releases 5.1.4 and 5.2.0 (and later versions like 5.3.0). It is not fixed in any 5.0.x version. So please consider upgrading to one of the above releases for the fix.   ... View more