11.88. Release 0.146

General Changes

• Fix error in map_concat() when the second map is empty.
• Require at least 4096 file descriptors to run Presto.
• Support casting between map types.
• Add MongoDB Connector.

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 nowonly enforced when hive.security=none is set, which is the defaultsecurity system. Specifically, the sql-standard authorization systemdoes not enforce these settings.

Black Hole Changes

• Add support for varchar(n).

Cassandra Changes

• Add support for Cassandra 3.0.