Presto 0.186 Documentation

11.9. Release 0.178

11.9. Release 0.178

General Changes

  • Fix various memory accounting bugs, which reduces the likelihood of full GCs/OOMs.
  • Fix a regression that causes queries that use the keyword “stats” to fail to parse.
  • Fix an issue where a query does not get cleaned up on the coordinator after query failure.
  • Add ability to cast to JSON from REAL, TINYINT or SMALLINT.
  • Add support for GROUPING operation to complex grouping operations.
  • Add support for correlated subqueries in IN predicates.
  • Add to_ieee754_32() and to_ieee754_64() functions.

Hive Changes

  • Fix high CPU usage due to schema caching when reading Avro files.
  • Preserve decompression error causes when decoding ORC files.

Memory Connector Changes

  • Fix a bug that prevented creating empty tables.

SPI Changes

  • Make environment available to resource group configuration managers.
  • Add additional performance statistics to query completion event.