In cdh6.3.0, the version of impala is 3.2. Impala can support files in ORC format, but you need to set ‑enable_orc_scanner to true.
How do I set this property in the Cloudera manager console?
Based on Impala documentation you need to add that flag, possibly to IMPALA_SERVER_ARGS
environment variable on the Impala Daemons.
I'm not sure Cloudera Manager exposes such settings.
Note: Just because you have Cloudera Manager, does not mean you can configure each little detail on the nodes; you might need to SSH to individual machines.