Release 402 (2 Nov 2022)

General

• Fix query processing when fault-tolerant execution is enabled and a stage of the query produces no data. ({issue}14794)

Blackhole connector

• Add support for column comments on view columns. ({issue}10705)

Clickhouse connector

• Reuse JDBC connections for metadata queries. This can be disabled with the query.reuse-connection configuration property. ({issue}14653)

Delta Lake connector

• Remove the deprecated hive.parquet.fail-on-corrupted-statistics and parquet.fail-on-corrupted-statistics configuration properties. The parquet.ignore-statistics property can be used to allow querying Parquet files with corrupted or incorrect statistics. ({issue}14777)
• Fix memory leak and improve memory tracking during large INSERT queries. ({issue}14823)

Druid connector

• Reuse JDBC connections for metadata queries. This can be disabled with the query.reuse-connection configuration property. ({issue}14653)

Hive connector

• Add support for column comments on view columns. ({issue}10705)
• Remove the deprecated hive.parquet.fail-on-corrupted-statistics and parquet.fail-on-corrupted-statistics configuration properties. The parquet.ignore-statistics property can be used to allow querying Parquet files with corrupted or incorrect statistics. ({issue}14777)
• Fix memory leak and improve memory tracking during large INSERT queries. ({issue}14823)

Hudi connector

• Remove the deprecated hive.parquet.fail-on-corrupted-statistics and parquet.fail-on-corrupted-statistics configuration properties. The parquet.ignore-statistics property can be used to allow querying Parquet files with corrupted or incorrect statistics. ({issue}14777)

Iceberg connector

• Add support to skip archiving when committing to a table in the Glue metastore and the iceberg.glue.skip-archive configuration property is set to true. ({issue}13413)
• Add support for column comments on view columns. ({issue}10705)
• Remove the deprecated hive.parquet.fail-on-corrupted-statistics and parquet.fail-on-corrupted-statistics configuration properties. The parquet.ignore-statistics property can be used to allow querying Parquet files with corrupted or incorrect statistics. ({issue}14777)
• Fix incorrect results when the column order in the equality delete filter is different from the table definition. ({issue}14693)
• Fix memory leak and improve memory tracking during large INSERT queries. ({issue}14823)

MariaDB connector

• Reuse JDBC connections for metadata queries. This can be disabled with the query.reuse-connection configuration property. ({issue}14653)

Memory connector

• Add support for column comments on view columns. ({issue}10705)

MySQL connector

• Reuse JDBC connections for metadata queries. This can be disabled with the query.reuse-connection configuration property. ({issue}14653)

MongoDB connector

• Support predicate pushdown on date, time(3), timestamp(3) and timestamp(3) with time zone columns. ({issue}14795)

Oracle connector

• Reuse JDBC connections for metadata queries. This can be disabled with the query.reuse-connection configuration property. ({issue}14653)

Phoenix connector

• Reuse JDBC connections for metadata queries. This can be disabled with the query.reuse-connection configuration property. ({issue}14653)

PostgreSQL connector

• Reuse JDBC connections for metadata queries. This can be disabled with the query.reuse-connection configuration property. ({issue}14653)

Redshift connector

• Reuse JDBC connections for metadata queries. This can be disabled with the query.reuse-connection configuration property. ({issue}14653)

SingleStore (MemSQL) connector

• Reuse JDBC connections for metadata queries. This can be disabled with the query.reuse-connection configuration property. ({issue}14653)

SQL Server connector

• Improve performance of certain queries which use the OR operator. ({issue}14570)
• Improve performance of queries with predicates involving the nullif function or arithmetic expressions. ({issue}14570)