The connectors as they are configured with Redash v2.0.0 do not work with Cloudera's CDH for either Impala or Hive. There are a number of issues, including:
thrift version 0.10.0 is incompatible (#1840),
many connection options are missing, especially security options, and
it is preferred to connect to a CDH Hive using Cloudera's Impyla library (especially on secured clusters).
The connectors as they are configured with Redash v2.0.0 do not work with Cloudera's CDH for either Impala or Hive. There are a number of issues, including:
I'll submit a pull request shortly.