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Add 480 release notes
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‎docs/src/main/sphinx/release.md‎

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# Release notes
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(releases-2026)=
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## 2026
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```{toctree}
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:maxdepth: 1
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release/release-480
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```
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(releases-2025)=
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## 2025
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‎docs/src/main/sphinx/release/release-480.md‎

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# Release 480 (updated to 19/01/2026)
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## General
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* Expose coordinator and worker counts to the metrics endpoint. ({issue}`27408`)
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* Expose scale writers max memory limits to improve management of insert memory
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consumption . ({issue}`27874`)
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* {{breaking}} Remove `enable-large-dynamic-filters` configuration property and the
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corresponding system session property `enable_large_dynamic_filters`. ({issue}`27637`)
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* {{breaking}} Remove the `dynamic-filtering.small*` and `dynamic-filtering.large-broadcast*`
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configuration properties. ({issue}`27637`)
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* Improve performance for remote data exchanges on newer CPU architectures and Graviton
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4 CPUs. ({issue}`27586`)
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* Improve performance of queries with data exchanges or aggregations. ({issue}`27657`)
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* Reduce out-of-memory errors in window queries when spilling is enabled. ({issue}`27873`)
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* Fix incorrect results when using {func}`localtimestamp(3)`. ({issue}`27806`)
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* Fix {func}`localtimestamp` failure for precisions 7 and 8. ({issue}`27807`)
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* Fix spurious query failures when querying `system` catalog while some catalog
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is dropped. ({issue}`28017`)
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## Web UI
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* Add cluster status info to the header in the preview UI. ({issue}`27712`)
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* Fix numeric ordering of stages. ({issue}`27655`)
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## ClickHouse connector
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* Fix failure when creating table caused by incorrect cleanup of the tables after a failed
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`CREATE TABLE ... AS SELECT` operation. ({issue}`27702`)
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## Delta Lake connector
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* {{breaking}} Remove live files table metadata cache. The configuration
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properties `metadata.live-files.cache-size`, `metadata.live-files.cache-ttl` and
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`checkpoint-filtering.enabled` are now defunct and must be removed from server
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configurations. ({issue}`27618`)
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* {{breaking}} Remove the `hive.write-validation-threads` configuration property. ({issue}`27729`)
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* {{breaking}} Remove the `parquet.optimized-writer.validation-percentage` configuration
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property, use `parquet.writer.validation-percentage`, instead. ({issue}`27729`)
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* {{breaking}} Remove the `hive.parquet.writer.block-size` configuration property, use
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`parquet.writer.block-size`, instead. ({issue}`27729`)
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* {{breaking}} Remove the `hive.parquet.writer.page-size` configuration property, use
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`parquet.writer.page-size`, instead. ({issue}`27729`)
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* {{breaking}} Remove the `gcs.use-access-token` configuration property. ({issue}`26941`)
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* {{breaking}} Remove the `hive.fs.new-file-inherit-ownership` configuration property. ({issue}`28029`)
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* Improve effectiveness of bloom filters for high cardinality columns written in Parquet files. ({issue}`27656`)
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* Do not require `PutObjectTagging` AWS S3 permission when writing to Delta Lake tables
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on S3. ({issue}`27701`)
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* Fix potential table corruption when executing `CREATE OR REPLACE` with table definition
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changes. ({issue}`27805`)
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## DuckDB connector
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* Fix failure when creating table caused by incorrect cleanup of the tables after a failed
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`CREATE TABLE ... AS SELECT` operation. ({issue}`27702`)
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## Hive connector
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* Add support for reading Parquet files with timestamps stored in nanosecond units as a
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`timestamp(p) with time zone` column. ({issue}`27861`)
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* {{breaking}} Remove the `hive.write-validation-threads` configuration property. ({issue}`27729`)
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* {{breaking}} Remove the `parquet.optimized-writer.validation-percentage` configuration
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property, use the `parquet.writer.validation-percentage`, instead. ({issue}`27729`)
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* {{breaking}} Remove the `hive.parquet.writer.block-size` configuration property, use
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`parquet.writer.block-size`, instead. ({issue}`27729`)
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* {{breaking}} Remove the `hive.parquet.writer.page-size` configuration property, use
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`parquet.writer.page-size`, instead. ({issue}`27729`)
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* {{breaking}} Remove the deprecated `gcs.use-access-token` configuration property. ({issue}`26941`)
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* {{breaking}} Remove the `hive.fs.new-file-inherit-ownership` configuration property. ({issue}`28029`)
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* Improve effectiveness of bloom filters written in Parquet files for high cardinality. ({issue}`27656`)
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## Hudi connector
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* {{breaking}} Remove the `hive.write-validation-threads` configuration property. ({issue}`27729`)
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* {{breaking}} Remove the `parquet.optimized-writer.validation-percentage` configuration
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property, use `parquet.writer.validation-percentage`, instead. ({issue}`27729`)
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* {{breaking}} Remove the `hive.parquet.writer.block-size` configuration property, use
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`parquet.writer.block-size`, instead. ({issue}`27729`)
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* {{breaking}} Remove the `hive.parquet.writer.page-size` configuration property, use
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`parquet.writer.page-size`, instead. ({issue}`27729`)
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* {{breaking}} Remove the deprecated `gcs.use-access-token` configuration property. ({issue}`26941`)
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* {{breaking}} Remove the `hive.fs.new-file-inherit-ownership` configuration property. ({issue}`28029`)
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## Iceberg connector
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* Add support for BigLake metastore in Iceberg REST catalog. ({issue}`26219`)
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* Add `delete_after_commit_enabled` and `max_previous_versions` table properties. ({issue}`14128`)
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* Allow creating Iceberg format version 3 tables, upgrading v1 or v2 tables to v3, and inserting
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into v3 tables. Unsupported v3 features are explicitly rejected. ({issue}`27786`)
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* Add support for column default values in Iceberg v3 tables. ({issue}`27837`)
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* Add support for Iceberg format v3 deletion vectors to enable `DELETE`, `UPDATE`
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and `MERGE` on v3 tables. ({issue}`27788`)
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* Add `content` column to `$manifests` and `$all_manifests` metadata tables. ({issue}`27975`)
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* Clean up unused files from materialized views when they are refreshed. ({issue}`28008`)
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* {{breaking}} Remove the `hive.write-validation-threads` configuration property. ({issue}`27729`)
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* {{breaking}} Remove the `parquet.optimized-writer.validation-percentage` configuration
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property, use `parquet.writer.validation-percentage`, instead. ({issue}`27729`)
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* {{breaking}} Remove the `hive.parquet.writer.block-size` configuration property, use
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`parquet.writer.block-size`, instead. ({issue}`27729`)
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* {{breaking}} Remove the `hive.parquet.writer.page-size` configuration property, use
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`parquet.writer.page-size`, instead. ({issue}`27729`)
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* {{breaking}} Remove the deprecated `gcs.use-access-token` configuration property. ({issue}`26941`)
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* {{breaking}} Remove the `hive.fs.new-file-inherit-ownership` configuration property. ({issue}`28029`)
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* {{breaking}} The catalog configuration property `iceberg.extended-statistics.enabled` and the
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corresponding catalog session property `extended_statistics_enabled` are now defunct. ({issue}`27914`)
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* Improve effectiveness of bloom filters for high cardinality columns written in Parquet files. ({issue}`27656`)
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* Improve query performance when querying fresh Iceberg materialized view. ({issue}`27608`)
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* Reduce planning time of queries with scans on tables with delete files. ({issue}`27955`)
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* Reduce planning time for simple queries with a scan and filter. ({issue}`27973`)
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* Fix failure when reading `$files` metadata table with partition evolution using
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`truncate` or `bucket` on the same column. ({issue}`26109`)
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* Fix failure when reading `$file_modified_time` metadata column on tables with equality
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deletes. ({issue}`27850`)
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* Avoid Parquet footer explosion when binary columns contain certain pathological values. ({issue}`27903`)
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* Fix failures for queries with JOINs on metadata columns. ({issue}`27984`)
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## Ignite connector
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* Fix failure when creating table caused by incorrect cleanup of the tables after a failed
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`CREATE TABLE ... AS SELECT` operation. ({issue}`27702`)
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## Lakehouse connector
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* Fix failure when reading Iceberg `$files` tables. ({issue}`26751`)
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## MariaDB connector
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* Fix failure when creating table caused by incorrect cleanup of the tables after a failed
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`CREATE TABLE ... AS SELECT` operation. ({issue}`27702`)
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## MySQL connector
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* Fix failure when creating table caused by incorrect cleanup of the tables after a failed
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`CREATE TABLE ... AS SELECT` operation. ({issue}`27702`)
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## Oracle connector
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* Add support for configuring a connection wait timeout with the `oracle.connection-pool.wait-timeout`
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catalog property. ({issue}`27744`)
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* Fix failure when creating table caused by incorrect cleanup of the tables after a failed
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`CREATE TABLE ... AS SELECT` operation. ({issue}`27702`)
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* Fix failure when reading `float` type in `query` table function. ({issue}`27880`)
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## PostgreSQL connector
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* Fix failure when creating table caused by incorrect cleanup of the tables after a failed
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`CREATE TABLE ... AS SELECT` operation. ({issue}`27702`)
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## Redshift connector
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* Fix failure when creating table caused by incorrect cleanup of the tables after a failed
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`CREATE TABLE ... AS SELECT` operation. ({issue}`27702`)
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## SingleStore connector
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* Fix failure when creating table caused by incorrect cleanup of the tables after a failed
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`CREATE TABLE ... AS SELECT` operation. ({issue}`27702`)
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## Snowflake connector
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* Fix failure when creating table caused by incorrect cleanup of the tables after a failed
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`CREATE TABLE ... AS SELECT` operation. ({issue}`27702`)
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## SQL Server connector
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* Fix failure when creating table caused by incorrect cleanup of the tables after a failed
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`CREATE TABLE ... AS SELECT` operation. ({issue}`27702`)
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## Vertica connector
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* Fix failure when creating table caused by incorrect cleanup of the tables after a failed
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`CREATE TABLE ... AS SELECT` operation. ({issue}`27702`)
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## SPI
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* Remove support for `TypeSignatureParameter`. Use `TypeParameter` instead. ({issue}`27574`)
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* Remove support for `ParameterKind`. Use `TypeParameter.Type`, `TypeParameter.Numeric`,
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and `TypeParameter.Variable` instead. ({issue}`27574`)
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* Remove support for `NamedType`, `NamedTypeSignature` and `NamedTypeParameter`. Use
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`TypeParameter.Type` instead. ({issue}`27574`)
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* Deprecate `MaterializedViewFreshness#getLastFreshTime`.
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Use `getLastKnownFreshTime` instead. ({issue}`27803`)

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