Release Notes v2.9.x

The 2.9.x series introduces Web UI full support for stateless transformations and revamped pipelines list and creation wizard. This release focuses on improving the day-to-day experience of creating and managing pipelines, with clearer navigation and better validation.

Version History

v2.9.2 — Patch release with bug fixes and default behavior updates
v2.9.1 — Patch release with filter and deduplication component fixes
v2.9.0 — Pipeline list and wizard revamp, transformations and filter improvements

What’s New

🔄 Stateless Transformations and Filters full support on the web UI

Stateless transformations and filters are now enabled on the web UI:

Remove feature flag for filters and transformations — Filters and transformations are now enabled by default on the web UI
Transformations — Stateless transformations are now fully supported in the web UI

📋 Revamped Pipelines List

The pipelines list has been redesigned for a clearer overview and easier actions:

Cleaner layout — Updated table and card presentation with consistent styling
Copy pipeline ID — Quick copy of pipeline ID from the list
Status filtering — Filter pipelines by status
Streamlined actions — Simplified action buttons and navigation

🔧 Transformation Configurator Improvements

The transformation configurator has been reworked for clarity and flexibility:

Concatenation builder — New builder for string concatenation expressions
Waterfall support — Support for waterfall-style functions and a more capable complex expression builder
Raw expression mode — Manual input and raw expression mode for advanced expressions
Expression mode fixes — Correct handling of various functions and fractional values in expression mode
Error feedback — Expandable panel to inspect transformation expression errors
Event editing — Event modifications at the type verification step; modified schema can be used as the source of truth for downstream steps, including when a schema is already present

🔍 Filter Builder Revamp

The filter builder has been improved for reliability and flexibility:

Condition chaining — Filter conditions chain correctly
Manual input — Option to enter filter expressions manually

🗺️ Pipeline Configuration Upload

You can upload a pipeline configuration instead of building it step-by-step:

Upload option — New option in the wizard to upload a pipeline JSON configuration file
Hydration — Uploaded config is hydrated so the wizard reflects the full configuration
Validation — Validation and error handling for uploaded configs

🗂️ Auto Mapping and Schema Handling

Auto mapping on demand — Auto mapping can be triggered at the mapping step when needed
Type verification — Event editing at the type verification step; modified schema is used as the source of truth for downstream steps

🆕 Patch Releases: v2.9.1 and v2.9.2

v2.9.1

Filter-only pipelines — Kubernetes orchestrator now enables the deduplication component when only filtering is enabled (no deduplication), so filter-only pipelines run correctly

v2.9.2

Sink read path — Fixed sink reading from the transform component when only filtering is enabled
Pipeline config generation — Fixed pipeline config generation to correctly include transformation expressions
Event fetching — Improved error display when reaching end-of-topic while fetching events
Config upload — Fixed pipeline config upload failing silently after hydration
Field mapper — Fixed search field alignment in the field mapper
Validation — Improved validation for topic selection and deduplication, with clearer error messages and correct submit button state when valid
UI — Styling changes to consolidate look and feel; new searchable select component (reused in transformation field select); fixed transformation select positioning; fixed help menu in light mode; ClickHouse mapper draft state preserved when revisiting the step; smart navigation with resume step and skipped event fetching when revisiting the Kafka selection form

Migration Notes

For Existing Users

No breaking changes — This release is fully backward compatible
Filter-only pipelines — Pipelines with only a filter (no deduplication) now correctly start the deduplication component; no config change needed

Configuration Updates

Filters — Default for NEXT_PUBLIC_FILTERS_ENABLED is now true in the UI
Transformations — Default for NEXT_PUBLIC_TRANSFORMATIONS_ENABLED is now true in the UI
Helm and build — No new required Helm values; build and image options updated for multi-arch and standalone output

Try It Out

To try the new features in v2.9.x:

Deploy the latest version using our Kubernetes Helm charts
Create a pipeline with transformations — Use the transformation configurator in the wizard (enabled by default)
Use the revamped pipelines list — Filter by status, copy pipeline IDs, and use the new actions
Upload a config — Upload an existing pipeline JSON from the creation flow

Full Changelog

For a complete list of changes, improvements, and bug fixes in the v2.9.x series, see the GitHub releases:

GlassFlow v2.9.x continues our commitment to making streaming ETL easier to configure, monitor, and operate for technical users and teams.