Changelog
This changelog provides a detailed record of updates and enhancements we have made to improve your Dremio Cloud experience.
December 18, 2025
Dremio Cloud is now available in AWS Europe (Ireland) and Germany (Frankfurt), offering improved performance, lower latency, and enhanced compliance with EU data residency and GDPR requirements.
Creating functions on another project's Open Catalog without navigating to that project first is now properly disallowed.
Setting and unsetting row-filtering and column-masking policies on another project's Open Catalog (added as a source) is now properly disallowed with an improved error message.
Fixed an issue where full refresh Reflections could stop working after repeated refreshes with no data changes.
Reflection refresh job profiles now include a new "Source Table Refresh State" phase that displays tables and other Reflection scans that were planned to build the new materialization.
Fixed an issue that resulted in a truncated file when exporting a query result containing a large number of rows or columns from the Dremio console.
The Catalog API now returns isMetadataExpired and lastMetadataRefreshAt in responses for tables and views.
Fixed an issue where the GET /reflection/recommendations/job-based/{id}/results/ REST API response contained incorrect endpoint URLs.
Fixed an issue where the output rows count was incorrect on the Jobs page for queries accelerated by results cache.
Fixed an issue where the Catalog Usage admin monitor failed to load due to an error processing queries containing a LIST_FILES function call.
When navigating to the SQL Runner, a loading indicator is now shown in the Data Panel.
December 4, 2025
Fixed an issue where the planner threw a "cannot translate call DO_NOT_PUSHDOWN" exception.
Fixed an issue in the vectorized copier where an exception was incorrectly thrown during column vector compaction.
Queries involving evaluation of large numbers of expressions are now more responsive to cancellation.
Fixed an issue where position delete files for Apache Iceberg v2 tables were not being sorted by file_path and pos according to the Iceberg specification.
Fixed an issue where an invalid range error would be thrown when reading a Delta Lake table that used column mapping.
Fixed an issue with validation during the PREPARE statement from the JDBC driver for some DML queries with parameters. Querying complex types with parameters and certain DML queries selected from a subquery with parameters are not supported.
Fixed an issue where SQL queries using tables from the sys source intermittently failed with a "Failure getting source [sys]" error.
Fixed an issue of Dremio process aborting when complex data type columns were involved in hash join queries.
Fixed an issue with runtime filters on DECIMAL columns incorrectly filtering out values.
Fixed an issue where filters on VARBINARY columns could produce inconsistent results.
In the Events tab on the Engines page, the last query time now shows the correct datetime or "--" instead of an invalid date.
Added engine replica numbers to the Engines page for failed events.
Fixed an issue where deleting a namespace you were viewing resulted in a not-found error.
The Maintenance filter in the Attributes dropdown on the Jobs page now appears automatically upon entering the page.
November 20, 2025
Fixed an issue where Iceberg table write operations could create invalid Parquet files when nullability checks were disabled in Dremio, leading to DATA_READ ERROR failures during subsequent queries.
Fixed an issue where sources in a broken state could not be reconfigured.
Reflections are now blocked on JDBC sources (such as Microsoft SQL Server and Oracle) with user impersonation enabled. If user impersonation is enabled after a Reflection is created, users should delete existing Reflections to prevent unauthorized data access, as these Reflections will fail to refresh and expire eventually according to their corresponding policy.
All values in the Attributes filter on the Jobs page now act as OR filters, showing jobs that match any of the selected criteria.
November 12, 2025
Introducing the new Dremio Cloud, featuring the built-in Open Catalog (Powered by Polaris) for seamless data governance and interoperability, Dremio's Query Engine to deliver on fast performance and Dremio's AI Agent so you can discover, analyze, and visualize data using natural language with no SQL expertise required. Try it out with our 30-day free trial by signing up at dremio.com/get-started.