Does impala support orc file format ? If not when will it be available to support?
I think no: How Impala Works with Hadoop File Formats
Only RC format supported now.
In Hulu, we have supported ORC format in our branch of Impala. We're planning to contribute it to the community. You can track this if you still need it: https://issues.apache.org/jira/browse/IMPALA-5717