Release 482 (25 Jun 2026)

General

Add support for the AT LOCAL operator. ({issue}29644)
Add support for named arguments in function calls using the name => value syntax. ({issue}29530)
Add support for casting char values to numeric, boolean, varbinary, and temporal types. ({issue}29374)
Add support for the MATCH predicate. ({issue}29810)
Add support for the UNIQUE predicate. ({issue}29811)
Add support for the SYMMETRIC and ASYMMETRIC keywords in the BETWEEN predicate. ({issue}29981)
Add support for predicates such as <, BETWEEN, and IS NULL in the WHEN clauses of a simple CASE expression. ({issue}29446)
Add support for the IS [NOT] TRUE, IS [NOT] FALSE, and IS [NOT] UNKNOWN predicates. ({issue}29998)
Add support for the like_regex predicate in SQL/JSON path expressions. ({issue}29592)
Add the {func}ends_with function. ({issue}29847)
Add support for the OVERLAY string function. ({issue}30026)
Add the ROW::fields function to return the field names of a row value. ({issue}29425)
Add support for invoking string functions as methods on varchar and char values, such as value.length() and varchar::chr(65). ({issue}29978)
Allow INSERT, UPDATE, and MERGE to assign values to array, map, and row columns containing nested character types when the value is assignable to the column type. ({issue}29953)
Allow comparing and ordering row and array values that contain null elements, for example in ORDER BY, DISTINCT, {func}min, {func}max, and range comparisons. ({issue}29891)
{{breaking}} Remove support for Alluxio-backed exchange storage for fault-tolerant execution. ({issue}29596)
{{breaking}} Reverse the implicit coercion between char and varchar: a char value coerces to varchar with its trailing spaces removed, and comparisons between char and varchar follow varchar semantics with no blank padding, so trailing spaces are significant. The previous behavior can be restored by setting the deprecated.legacy-varchar-to-char-coercion configuration property to true. ({issue}29939)
Disallow OMIT QUOTES in JSON_QUERY when the returned type is json. ({issue}29587)
Reduce memory usage that accumulates over time on long-running clusters that execute many queries with aggregations. ({issue}29523, {issue}29524)
Improve performance of queries with a {func}starts_with filter by enabling predicate pushdown. ({issue}29712)
Fix incorrect results for queries on number columns containing NaN values. ({issue}29497)
Fix incorrect results when casting decimal values with precision smaller than 19 to double. ({issue}29831)
Fix DISTINCT and GROUP BY treating two NaN values in number columns as distinct. ({issue}29920)
Fix incorrect results for DISTINCT, GROUP BY, and = comparisons on number values whose magnitude exceeds the supported precision. ({issue}29962)
Fix incorrect ordering, grouping, and aggregation of row values with more than 64 fields. ({issue}30013)
Fix incorrect column lineage for recursive common table expressions with column aliases. ({issue}29304)
Fix query failure when dereferencing a field of a null row value inside a lambda expression. ({issue}29504)
Fix failure when executing a SQL user-defined function that declares a variable with a structural default value such as an array. ({issue}29533)
Fix failure when a table function returns large pass-through columns. ({issue}29561)
Fix incorrect query progress reported through the /v1/query endpoint and the Web UI. ({issue}29793)
Fix query progress reported as NaN under fault-tolerant execution. ({issue}29791)
Fix failure when serializing custom data types provided by connectors over the spooling protocol. ({issue}29711)
Fix {func}round returning NaN for double and real values when rounding to a number of decimal places that causes underflow. ({issue}29808)
Fix DESCRIBE OUTPUT returning the number type to clients that do not support it. ({issue}29671)

Security

Add a User-Agent header to JWKS requests used for JWT authentication and OAuth 2.0 token validation. ({issue}29669)

Web UI

Add buttons to the preview UI to cancel or preempt a running query. ({issue}29315)
Reduce CPU usage of the preview UI query list page. ({issue}29865)
Fix error in the preview UI splits timeline view for a failed query with no stages. ({issue}29537)

JDBC driver

Fix connection leak when retrieval of a spooled result segment fails. ({issue}30048)

CLI

Fix connection leak when retrieval of a spooled result segment fails. ({issue}30048)

Cassandra connector

Fix query failure when a predicate on a Cassandra table results in an empty WHERE clause. ({issue}30027)

Delta Lake connector

Add the table location to the $properties metadata table. ({issue}29521)
Add support for limiting the number of rows in Parquet writer row groups with the parquet.writer.block-row-count configuration property or the parquet_writer_block_row_count session property. ({issue}29673)
Disallow creating tables partitioned by varbinary columns. ({issue}24155)
{{breaking}} Remove support for the Alluxio file system. This does not affect support for the Alluxio file system cache. ({issue}29596)
Improve compression and read performance for high-cardinality string columns in Parquet files. This can be disabled by setting the parquet.writer.delta-length-byte-array-encoding-enabled configuration property to false. ({issue}29246)
Improve performance of queries that access nested fields inside lambda expressions. ({issue}29532)
Improve performance of reads from Google Cloud Storage when using static credentials. ({issue}29776)
Fix data loss caused by cleanup of a failed write deleting active data files when deletion vectors are enabled. ({issue}29361)
Fix failure when accessing Azure Storage with a hierarchical namespace using vended credentials scoped to a subdirectory. ({issue}29293)
Fix sporadic failures when reading data from S3. ({issue}29419)

Druid connector

Improve performance of queries involving aggregations by pushing the computation to Druid. ({issue}29863)

Exasol connector

Add support for the timestamp type. ({issue}26963)

Hive connector

Add support for limiting the number of rows in Parquet writer row groups with the parquet.writer.block-row-count configuration property or the parquet_writer_block_row_count session property. ({issue}29673)
Add the hive.parquet.max-split-size configuration property to control the maximum size of splits for Parquet files, while hive.max-split-size applies only to other file formats. ({issue}29698)
{{breaking}} Remove the hive.max-initial-splits and hive.max-initial-split-size configuration properties. ({issue}29698)
{{breaking}} Remove support for the Alluxio file system. This does not affect support for the Alluxio file system cache. ({issue}29596)
Improve compression and read performance for high-cardinality string columns in Parquet files. This can be disabled by setting the parquet.writer.delta-length-byte-array-encoding-enabled configuration property to false. ({issue}29246)
Improve performance of queries that access nested fields inside lambda expressions. ({issue}29532)
Improve performance of reads from Google Cloud Storage when using static credentials. ({issue}29776)
Improve performance when a configured Hive metastore is unavailable by backing off before retrying the connection. ({issue}29653)
Fix sporadic failures when reading data from S3. ({issue}29419)

Hudi connector

{{breaking}} Remove support for the Alluxio file system. This does not affect support for the Alluxio file system cache. ({issue}29596)
Improve performance of reads from Google Cloud Storage when using static credentials. ({issue}29776)
Fix sporadic failures when reading data from S3. ({issue}29419)

Iceberg connector

Allow configuring the data_location table property without enabling object_store_layout_enabled. ({issue}28887)
Add support for limiting the number of rows in Parquet writer row groups with the parquet.writer.block-row-count configuration property or the parquet_writer_block_row_count session property. ({issue}29673)
Add support for caching Parquet file footers, configurable with the iceberg.parquet-footer-cache.type configuration property. ({issue}29684)
Add support for the write.object-storage.partitioned-paths table property. ({issue}27633)
Add support for prefixed path storage credentials in the Iceberg REST catalog. ({issue}29641)
Add support for reading and writing geometry and geography values in Iceberg v3 tables. ({issue}27893)
Add support for the location property when creating views in the REST and JDBC catalogs. ({issue}29724)
Add the iceberg.max-split-size configuration property and max_split_size session property to control the maximum size of splits. This replaces the experimental experimental_split_size session property. ({issue}29894)
Add support for the target_max_file_size and parquet_writer_row_group_size table properties, persisted as the Iceberg-native write.target-file-size-bytes and write.parquet.row-group-size-bytes properties. ({issue}28250)
{{breaking}} Change the lower_bounds and upper_bounds columns of the $files metadata table from map(integer, varchar) to typed row values. Queries using lower_bounds[1] or casting these columns to json must be updated. ({issue}23147)
{{breaking}} Remove the target_max_file_size and parquet_writer_row_group_size session properties, including the deprecated parquet_writer_block_size alias. Use the equivalent table properties instead. ({issue}28250)
{{breaking}} Remove support for the Alluxio file system. This does not affect support for the Alluxio file system cache. ({issue}29596)
Improve performance of queries on the $partitions metadata table. ({issue}23147)
Improve performance of queries on the iceberg_tables system table that filter the table name with an IN predicate. ({issue}29964)
Improve compression and read performance for high-cardinality string columns in Parquet files. This can be disabled by setting the parquet.writer.delta-length-byte-array-encoding-enabled configuration property to false. ({issue}29246, {issue}29616)
Improve performance of queries that access nested fields inside lambda expressions. ({issue}29532)
Reduce memory usage when reading tables with many equality delete files. ({issue}29643)
Improve performance of reads from Google Cloud Storage when using static credentials. ({issue}29776)
Increase the maximum supported size of variant metadata from 16MB to 128MB. ({issue}29423)
Fix loss of materialized view data when running CREATE OR REPLACE MATERIALIZED VIEW for a view with a fixed storage location. ({issue}29481)
Fix loss of the custom storage location of a view when running CREATE OR REPLACE VIEW in the REST and JDBC catalogs. ({issue}25425, {issue}29755)
Fix query failure when reading tables with delete files that reference nested fields. ({issue}29763)
Fix failure when reading statistics for a column whose type was changed. ({issue}29802)
Fix excessive token requests when listing nested namespaces in a REST catalog using OAuth 2.0 with iceberg.rest-catalog.session set to NONE. ({issue}29722)
Fix creation of multiple delete files per data file when updating tables partitioned only with identity transforms. ({issue}28276)
Fix failure when listing schemas in an Iceberg REST catalog and a nested namespace is dropped concurrently. ({issue}29500)
Fix failure when listing columns or comments for tables in the Glue catalog when access to a table is denied. ({issue}29995)
Fix failure when accessing Azure Storage with a hierarchical namespace using vended credentials scoped to a subdirectory. ({issue}29293)
Fix sporadic failures when reading data from S3. ({issue}29419)

Lakehouse connector

Add support for limiting the number of rows in Parquet writer row groups with the parquet.writer.block-row-count configuration property or the parquet_writer_block_row_count session property. ({issue}29673)
Improve performance of reads from Google Cloud Storage when using static credentials. ({issue}29776)
Fix sporadic failures when reading data from S3. ({issue}29419)

MySQL connector

Fix incorrect results when filtering a char or varchar column with an equality or IN predicate where stored values differ only in trailing spaces. Inequality and range predicates on character columns are no longer pushed down. ({issue}29952, {issue}29939)

Oracle connector

Fix incorrect results when a CAST from char to varchar is pushed down to Oracle, which previously retained the blank padding instead of trimming it. ({issue}29939)

PostgreSQL connector

Add support for reading and writing the PostgreSQL point type as the Trino geometry type. ({issue}29568)
Fix failure when reading tables with PostGIS geometry columns. ({issue}29505)

Redis connector

Add support for TLS connections to Redis, configurable with the redis.tls.* configuration properties. ({issue}8091)

SQL Server connector

{{breaking}} Fix incorrect results when filtering a char or varchar column with an equality or IN predicate where stored values differ only in trailing spaces. Inequality and range predicates on character columns are no longer pushed down, so a DELETE or UPDATE that relies on pushing down such a predicate fails. ({issue}29952, {issue}29939)

TPC-DS connector

Update the TPC-DS data generator to version 1.7, which changes some generated data and table statistics. ({issue}30022)

SPI

Add the @StaticMethod annotation to register a scalar function as a static method of a named type, invocable via T::method(args). ({issue}29385)
Add the @InstanceMethod annotation to register a scalar function as a method of its receiver type, invocable via expr.method(args). ({issue}29399)
Add the @Name annotation to declare names for the arguments of functions implemented in Java. ({issue}29530)
Add support for lambda expressions in connector expression pushdown. ({issue}29532)
Add support for an optional description on connector table functions. ({issue}29830)
Add support for connector page sources to report memory usage through a MemoryContext provided by the engine. ({issue}29843)
{{breaking}} Replace the DynamicFilter parameter of ConnectorSplitManager.getSplits with the set of dynamic filter columns, and pass the current predicate to ConnectorSplitSource.getNextBatch as a DynamicFilterSnapshot. ({issue}29206)
{{breaking}} Remove the predicate from Constraint and add the ConnectorExpressionEvaluator interface for evaluating expressions during partition and split pruning. ({issue}29289)
{{breaking}} Remove deprecated methods from ConnectorPageSourceProvider and ConnectorPageSinkProvider. ({issue}29562)
{{breaking}} Remove a deprecated method from TableFunctionProcessorProvider. ({issue}29618)