============= Release 0.146 ============= General Changes --------------- * Fix error in :func:`map_concat` when the second map is empty. * Require at least 4096 file descriptors to run Presto. * Support casting between map types. * Add :doc:`/connector/mongodb`. Hive Changes ------------ * Fix incorrect skipping of data in Parquet during predicate push-down. * Fix reading of Parquet maps and lists containing nulls. * Fix reading empty ORC file with ``hive.orc.use-column-names`` enabled. * Fix writing to S3 when the staging directory is a symlink to a directory. * Legacy authorization properties, such as ``hive.allow-drop-table``, are now only enforced when ``hive.security=none`` is set, which is the default security system. Specifically, the ``sql-standard`` authorization system does not enforce these settings. Black Hole Changes ------------------ * Add support for ``varchar(n)``. Cassandra Changes ----------------- * Add support for Cassandra 3.0.