*Note*: migrated from original JIRA: https://issues.apache.org/jira/browse/ARROW-12438 Once we implement (https://github.com/apache/arrow-datafusion/issues/133) https://issues.apache.org/jira/browse/ARROW-11019 would be good to add support for partition pruning optimization based on filters / `WHERE` clause.