Release 425 (24 Aug 2023)

General

• Improve performance of GROUP BY. ({issue}18106)
• Fix incorrect reporting of cumulative memory usage. ({issue}18714)

BlackHole connector

• Remove support for materialized views. ({issue}18628)

Delta Lake connector

• Add support for check constraints in MERGE statements. ({issue}15411)
• Improve performance when statistics are missing from the transaction log. ({issue}16743)
• Improve memory usage accounting of the Parquet writer. ({issue}18756)
• Improve performance of DELETE statements when they delete the whole table or when the filters only apply to partition columns. ({issue}18332 )

Hive connector

• Add support for CASCADE option in DROP SCHEMA statements. ({issue}18320)
• Create a new directory if the specified external location for a new table does not exist. ({issue}17920)
• Improve memory usage accounting of the Parquet writer. ({issue}18756)
• Improve performance of writing to JSON files. ({issue}18683)

Iceberg connector

• Improve memory usage accounting of the Parquet writer. ({issue}18756)

Kudu connector

• Add support for CASCADE option in DROP SCHEMA statements. ({issue}18629)

MongoDB connector

• Add support for the Decimal128 MongoDB type. ({issue}18722)
• Add support for CASCADE option in DROP SCHEMA statements. ({issue}18629)
• Fix query failure when reading the value of -0 as a decimal type. ({issue}18777)