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<@U0A71G31CDV> what is the latest stable version o...
# questions-and-troubleshooting
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@Rocky what is the latest stable version of starrocks?
r
As of September 2026, the latest versions of StarRocks are: * Latest Stable Version: 3.5.21 (v3.5 series) * Latest Feature Version: 4.1.3 (v4.1 series) StarRocks typically maintains the three most recent minor versions. The v3.5 series is currently designated as the primary stable line, while v4.1 provides the latest features and architectural improvements, including enhanced Apache Iceberg support and first-class JSON data type performance. For production environments, it is generally recommended to use the latest patch of the Stable version (currently 3.5.x) unless you specifically require features introduced in the 4.x branches. You can always check the most recent releases on the StarRocks GitHub Releases page. References • release_notes/release-4.0.md • release_notes/release-3.4.md • release_notes/release-3.2.md • release_notes/release-2.4.md
Yes, you can safely downgrade from StarRocks v4.1.4 to v4.0.11, as long as you follow the official downgrade procedure. According to the StarRocks v4.1 Release Notes, the specific compatibility rule is that you must not downgrade to any version earlier than v4.0.6. Since v4.0.11 is later than this threshold, it is supported. Critical Considerations * Version Limitation: Do not attempt to downgrade to v4.0.0 through v4.0.5. Version 4.1 introduced significant changes to internal data layout and tablet distribution mechanisms. Metadata generated in v4.1 is not backward compatible with versions prior to v4.0.6. * Feature Compatibility: If you have enabled and used new features exclusive to v4.1—such as Adaptive Layout (Range Distribution) or specific Iceberg Variant data types—the data or table structures created with these features will not function in v4.0.11. * Procedure: 1. Backup Metadata: Before starting, run 
ALTER SYSTEM CREATE IMAGE;
on the Leader FE to ensure you have a fresh metadata snapshot. 2. Disable Balancer: Temporarily disable tablet balancing and cloning using:
Copy code
sql
        ADMIN SET FRONTEND CONFIG ("disable_balance" = "true");
        ADMIN SET FRONTEND CONFIG ("disable_colocate_balance" = "true");
3. Order of Operations: Downgrade FEs first (Follower nodes first, then the Leader), then proceed to downgrade the BE/CN nodes. If your cluster is running in a production environment, it is highly recommended to perform a "downgrade availability test" on a single FE/BE node (or a staging environment) before proceeding with the entire cluster. References • release_notes/release-4.1.md • release_notes/release-4.0.md • deployment/downgrade.md References • release_notes/release-4.0.md • release_notes/release-3.3.md • deployment/downgrade.md • release_notes/release-3.4.md
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@Rocky what is the latest 4.1 version? from github i see it as 4.1.4, 4.1.5 is on the changelog - could you confirm?
r
Yes, you are correct. The latest version in the 4.1 series is 4.1.5. According to the official StarRocks documentation and changelog, v4.1.5 was released on September 8, 2026. The reason you might see 4.1.4 on certain parts of GitHub (like the branch tree) is often due to how the release branches are managed. While the 
4.1
branch might be showing a specific state, the v4.1.5 tag is the official release point. What's new in 4.1.5? This patch includes several key improvements and bug fixes, including: * ANALYZE Improvement: Supports 
ANALYZE SAMPLE TABLE PREDICATE COLUMNS
for external tables. * Tablet Pre-splitting: Extended sample-based tablet pre-split to support non-key expressions and Iceberg loads. * Performance: Reduced lock contention by making SQL blacklist verification lock-free and removing global metacache locks for lake segments. * Paimon Integration: Optimized background metadata refresh for Paimon catalogs to refresh only recently accessed tables. For the most accurate list of releases, you should check the GitHub Releases Page rather than the branch tree, as the release page will list the specific tags and binaries for 4.1.5. References • release_notes/release-4.1.md • release_notes/release-4.0.md • release_notes/release-3.3.md • release_notes/release-3.4.md References • release_notes/release-2.1.md • release_notes/release-2.5.md • release_notes/release-3.3.md • release_notes/release-3.1.md
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@Rocky when is 4.1.5 coming out?
r
StarRocks v4.1.5 has already been officially released as of September 8, 2026. If you are seeing v4.1.4 on the GitHub "tree" or branch selector, it may be because the release branch for 4.1 is currently pointing to a specific commit, or the repository's default branch view hasn't updated to show the 4.1.5 tag in that specific dropdown. To confirm the release and get the latest version: * GitHub Releases: Check the Releases page directly. You should see the tag 
v4.1.5
with the associated changelog and assets. * Docker Hub: The official Docker images (e.g., 
starrocks/fe-ubuntu:4.1.5
) are typically pushed shortly after the GitHub tag is created. * Documentation: The StarRocks v4.1 Release Notes already reflect this version as the latest in the series. If you are looking for specific binary downloads and only see 4.1.4 on a download page, there is sometimes a slight delay (1-2 days) between the source code release and the availability of pre-compiled community binaries on the main website. However, the source code and tags are live. Key Highlights of 4.1.5: * Optimized Paimon Refresh: Only refreshes recently accessed tables rather than the entire warehouse. * Reduced Lock Contention: Removed global metacache locks for lake segments to improve concurrency. * Enhanced ANALYZE: Better support for predicate-based sampling on external tables. References • release_notes/release-4.1.md • release_notes/release-4.0.md • release_notes/release-3.3.md • release_notes/release-3.4.md References • release_notes/release-2.5.md • release_notes/release-2.1.md • release_notes/release-3.3.md • release_notes/release-2.3.md
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