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Release 372 (2 Mar 2022)

General​

  • Add trim_array() function. (#11238)
  • Improve handling of prepared statements with long query text by compressing them within HTTP headers. This can be configured or disabled using the protocol.v1.prepared-statement-compression.length-threshold configuration property. (#11098)
  • Improve performance of specific queries which compare table columns of type timestamp with date literals. (#11170)
  • Add redirection awareness for ADD COLUMN, DROP TABLE, COMMENT tasks. (#11072)
  • Remove support for reserved memory pool. Configuration property experimental.reserved-pool-disabled can no longer be used. (#6677)
  • Ensure memory is released completely after query completion. (#11030)
  • Fix certain queries failing due to dictionary compacting error. (#11080)
  • Fix SET SESSION and RESET SESSION not working for catalogs which include special characters in their name. (#11171)
  • Fix bug where queries were not transitioned to RUNNING state when task-level retries were enabled. (#11198)

Security​

  • Allow configuration of connect and read timeouts for LDAP authentication. (#10925)

Docker image​

  • Add a health check to the Docker container image. (#10413)

JDBC driver​

  • Fix DatabaseMetaData#getTables and DatabaseMetaData#getColumns to include views for Iceberg, Raptor, Accumulo and Blackhole connectors. (#11063, #11060)

Base-JDBC connector library​

  • Fix spurious query failures when metadata cache is not enabled and data access depends on the session state. (#11068)

Accumulo connector​

  • Fix incorrect results when querying date type columns. (#11055)

Cassandra connector​

  • Fix incorrect results when filtering partition keys without projections. (#11001)

ClickHouse connector​

  • Fix spurious query failures when metadata cache is not enabled and extra credentials with user-credential-name or password-credential-name are used to access data. (#11068)

Druid connector​

  • Fix spurious query failures when metadata cache is not enabled and extra credentials with user-credential-name or password-credential-name are used to access data. (#11068)

Hive connector​

  • Allow redirects of Iceberg or Delta tables which have no StorageDescriptor in the Glue metastore. (#11092)
  • Stop logging spurious failures when storage caching is used. (#11101)
  • Allow reading Zstandard compressed Avro files. (#11090)
  • Fix incorrect query results after writes to a table when directory caching is enabled enabled with the hive.file-status-cache-tables configuration property. (#10621)
  • Fix potential query failures for queries writing data to tables backed by S3. (#11089)

Iceberg connector​

  • Add support for COMMENT ON COLUMN statement. (#11143)
  • Improve query performance after table schema evolved, by fixing the connector to support table stats in such case. (#11091)
  • Fix potential query failures for queries writing data to tables backed by S3. (#11089)
  • Prevent query failure from dereference pushdown when a column has a comment. (#11104)

Kudu connector​

  • Add support for Kerberos authentication. (#10953)

MongoDB connector​

  • Map MongoDB bindata type to Trino varbinary type if explicit schema does not exist. (#11122)

MySQL connector​

  • Fix spurious query failures when metadata cache is not enabled and extra credentials with user-credential-name or password-credential-name are used to access data. (#11068)

Oracle connector​

  • Fix spurious query failures when metadata cache is not enabled and extra credentials with user-credential-name or password-credential-name are used to access data. (#11068)

Phoenix connector​

  • Fix query failures when applying predicates on array(char) type columns. (#10451)
  • Fix metadata listing failure in case of concurrent table deletion. (#10904)

PostgreSQL connector​

  • Add support for pushing down joins on character string type columns. (#10059)
  • Fix spurious query failures when metadata cache is not enabled and extra credentials with user-credential-name or password-credential-name are used to access data. (#11068)

Redshift connector​

  • Fix spurious query failures when metadata cache is not enabled and extra credentials with user-credential-name or password-credential-name are used to access data. (#11068)

SingleStore (MemSQL) connector​

  • Fix spurious query failures when metadata cache is not enabled, and extra credentials with user-credential-name or password-credential-name are used to access data. (#11068)

SQL Server connector​

  • Update JDBC driver to 10.2.0. The new version automatically enables TLS and certificate verification. Update the TLS configuration to keep the old behavior. (#10898)
  • Fix spurious query failures when metadata cache is not enabled and extra credentials with user-credential-name or password-credential-name are used to access data. (#11068)

SPI​

  • Pass more information about predicates in ConnectorMetadata#applyFilter invocation. The predicates that cannot be represented with a TupleDomain are available via Constraint.getExpression(). (#7994)