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Release 368 (11 Jan 2022)

General​

  • Allow setting per task memory limits via query.max-total-memory-per-task config property or via query_max_total_memory_per_task session property. (#10308)
  • Improve wall time for query processing with the phased scheduling policy. The previous behavior can be restored by setting the query.execution-policy configuration property to legacy-phased. (#10350)
  • Enable phased scheduling policy by default. The previous behavior can be restored by setting the query.execution-policy configuration property to all-at-once. (#10455)
  • Improve performance of arithmetic operations involving decimals with precision larger than 18. (#10051)
  • Reduce risk of out-of-memory failure on congested clusters with high memory usage. (#10475)
  • Fix queries not being unblocked when placed in reserved memory pool. (#10475)
  • Prevent execution of REFRESH MATERIALIZED VIEW from getting stuck. (#10360)
  • Fix double reporting of scheduled time for scan operators in EXPLAIN ANALYZE. (#10472)
  • Fix issue where the length of log file names grow indefinitely upon log rotation. (#10394)

Hive connector​

  • Improve performance of decoding decimal values with precision larger than 18 in ORC, Parquet and RCFile data. (#10051)
  • Disallow querying the properties system table for Delta Lake tables, since Delta Lake tables are not supported. This fixes the previous behavior of silently returning incorrect values. (#10447)
  • Reduce risk of worker out-of-memory exception when scanning ORC files. (#9949)

Iceberg connector​

  • Fix Iceberg table creation with location when schema location inaccessible. (#9732)
  • Support file based access control. (#10493)
  • Display the Iceberg table location in SHOW CREATE TABLE output. (#10459)

SingleStore (MemSQL) connector​

  • Add support for time type. (#10332)

Oracle connector​

  • Fix incorrect result when a date value is older than or equal to 1582-10-14. (#10380)

Phoenix connector​

  • Add support for reading binary type. (#10539)

PostgreSQL connector​

  • Add support for accessing tables created with declarative partitioning in PostgreSQL. (#10400)

SPI​

  • Encode long decimal values using two's complement representation and change their carrier type to io.trino.type.Int128 instead of io.airlift.slice.Slice. (#10051)
  • Fix ClassNotFoundException when using aggregation with a custom state type. (#10408)