Product updates

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24 results

  • Jun 23, 2026

      Improved
      Aiven for ClickHouse®

    End-of-life schedule for Aiven for ClickHouse® 25.3

    Aiven for ClickHouse® 25.3 has scheduled end of availability (EOA) and end of life (EOL) dates.

    • End of availability: July 1, 2026. New service creation is no longer available for version 25.3.
    • End of life: September 30, 2026. Services running version 25.3 are automatically upgraded to version 25.8 after this date.

    Upgrade services before the EOL date to avoid disruption. Fork a service before upgrading to test compatibility.

    To learn more, see Aiven for ClickHouse version lifecycle policy and Aiven for ClickHouse version dates.

  • May 29, 2026

      New
      Aiven for ClickHouse®

    Apache Arrow Flight support (early availability)

    Aiven for ClickHouse® now supports Apache Arrow Flight for new services running ClickHouse 25.8 LTS. Use Arrow Flight to transfer large analytical datasets faster between ClickHouse and Arrow-native tools.

    Arrow Flight connection details are not yet available in the Aiven Console. To get the connection details, use the Aiven API, Aiven CLI, or Aiven MCP server.

    For more information, see Supported interfaces and drivers.

  • Apr 28, 2026

      Improved
      Aiven for ClickHouse®

    Default ClickHouse version for new services changes to 25.8

    Starting May 5, 2026, the default Aiven for ClickHouse version is 25.8. New services created without a specified version use 25.8. Existing ClickHouse services running version 25.3 are not upgraded automatically.

    To avoid unintended version changes, explicitly specify the ClickHouse version in your infrastructure-as-code (IaC) configuration.

    To upgrade an existing ClickHouse 25.3 service, refer to the ClickHouse version management documentation.

  • Apr 20, 2026

      New
      Aiven for ClickHouse®

    Configurable vector search index cache ratio now available for Aiven for ClickHouse®

    You can now tune the vector_similarity_index_cache_size setting for Aiven for ClickHouse services running version 25.8 and later.

    This setting controls how ClickHouse's SLRU cache splits between protected and probationary segments for HNSW vector similarity indexes. The Aiven default is `0.1`. Changing this setting doesn't require a service restart.

  • Mar 25, 2026

      New
      Aiven for ClickHouse®

    Multi-version support for Aiven for ClickHouse®

    Aiven for ClickHouse® now supports multiple ClickHouse versions. You can select the ClickHouse version when creating a service and upgrade the service to a newer supported version later.

    Currently supported versions include:

    • ClickHouse 25.3 (default)
    • ClickHouse 25.8

    Downgrading to an earlier ClickHouse version is not supported.

    For more information, see Manage versions in Aiven for ClickHouse®.

  • Mar 25, 2026

      Improved
      Aiven for ClickHouse®

    ClickHouse 25.8 LTS support

    Aiven for ClickHouse® now supports ClickHouse 25.8 LTS. This release adds new table engines and expands support for data lake and object storage integrations.

    Key highlights

    • Vector search GA with binary quantization for lower memory usage and faster indexing
    • Lightweight projections act as secondary indexes without duplicating data
    • Lightweight updates (beta) — UPDATE ... SET ... WHERE on MergeTree tables
    • Correlated subqueries and lag/lead window functions for broader SQL compatibility
    • Iceberg and Delta Lake improvements including write support, catalog integration, and position/equality deletes
    • Parquet reader v3 with filter pushdown for faster queries on external files
    • Lazy materialization and query condition cache for improved query performance

    More engines supported

    • MergeTree family
      • CoalescingMergeTree
      • ReplicatedCoalescingMergeTree
    • Integration
      • GCS
    • Data lake
      • DeltaLakeAzure
      • DeltaLakeS3

    Table engines supported in ClickHouse 25.3 remain available in ClickHouse 25.8. For the complete list of upstream changes, see ClickHouse 2025 Changelog.

  • Dec 15, 2025

      New
      Aiven for ClickHouse®

    Aiven for ClickHouse® upgraded to 25.3

    Aiven for ClickHouse® has been upgraded from 24.8 to 25.3. This release contains new features, improvements to existing functionality, and fixes on top of the previous version.

    Highlights

    • S3Queue table engine
    • AzureQueue table engine
    • New query analyzer
    • Improved JOIN performance
    • Data types: JSON, Variant, Dynamic
    • Refreshable materialized view
    • New generateSerialID function

    For all the introduced changes, see relevant sections of the ClickHouse changelog (24.9, 24.10, 24.11, 24.12, 25.1, 25.2, 25.3).

  • Sep 2, 2025

      New
      Aiven for ClickHouse®
      Aiven for Apache Kafka®
      Aiven Console

    All Aiven for ClickHouse® - Kafka® integration configs now also via console

    You can now configure all advanced settings for your Aiven for ClickHouse® - Aiven for Kafka® integration table directly in the Aiven Console. You can still use API if you prefer to configure these setting programmatically. The advanced settings in the console will be set to their default values unless you have configured them previously.

    See how to enable and configure Aiven for ClickHouse® - Aiven for Kafka® integration.

  • Jun 19, 2025

      New
      Aiven for ClickHouse®

    More flexible, price-performant plans for Aiven for ClickHouse®

    With the new Aiven for ClickHouse® plans, you can now enjoy improved performance and cost efficiency. You gain more flexibility in managing your ClickHouse workloads with stronger control and greater predictability over your services.

    New features

    • Optimized plans: Introduced enhanced plans across AWS, Google Cloud, and Microsoft Azure, offering improved price-performance ratios and greater flexibility. You can now double compute power for the same plan or reduce costs by up to 30% for the same compute.
    • Dynamic Disk Sizing (DDS): Enabled independent scaling of local storage, allowing you to pay only for the storage they need and avoid overprovisioning.

    Improvements

    • Utilizing more modern instance types, including ARM chipsets where available, for performance and cost improvements.
    • Expanded plan options within startup and business tiers (new startup & business 8, and 128 plans) for simplified resource management and optimized costs.

    Deprecation

    • Older plans for Aiven for ClickHouse will be retired on August 29, 2025.

    Learn more about the introduced enhancements and check out our FAQs in Your ClickHouse, optimized: Experience more flexible, price-performant plans.