12.56. Release 0.180

Fix a rare bug where rows containing only values are not returnedto the client. This only occurs when an entire result page contains onlynull values. The only known case is a query over an ORC encoded Hive tablethat does not perform any transformation of the data.
Fix incorrect results when performing comparisons between values of approximatedata types (REAL, DOUBLE) and columns of certain exact numeric types(INTEGER, BIGINT, DECIMAL).
Fix query failure due to NoClassDefFoundError when scalar functions declaredin plugins are implemented with instance methods.
Improve performance of map subscript from O(n) to O(1) in all cases. Previously, only mapsproduced by certain functions and readers could take advantage of this improvement.
Skip unknown costs in EXPLAIN output.
Support Secure Internal Communication between Presto nodes.
Add initial support for CROSS JOIN against LATERAL derived tables.
Add support for VARBINARY concatenation.
Add that makes it possible to use Presto withexternal systems without the need to implement a custom connector.
Add experimental REST endpoint on coordinator.

Hive Changes

Ignore partition bucketing if table is not bucketed. This allows droppingthe bucketing from table metadata but leaving it for old partitions.
Improve error message for Hive partitions dropped during execution.
The optimized RCFile writer is enabled by default, but can be disabledwith the hive.rcfile-optimized-writer.enabled config option.The writer supports validation which reads back the entire file afterwriting. Validation is disabled by default, but can be enabled with thehive.rcfile.writer.validate config option.