20.84. Release 0.165

General Changes

  • Make AT a non-reserved keyword.

  • Improve performance of transform().

  • Improve exchange performance by deserializing in parallel.

  • Add support for compressed exchanges. This can be enabled with the exchange.compression-enabled config option.

  • Add input and hash collision statistics to EXPLAIN ANALYZE output.

Hive Changes

  • Add support for MAP and ARRAY types in optimized Parquet reader.

MySQL and PostgreSQL Changes

  • Fix connection leak on workers.