fix: Allow serving features while a feature view is MATERIALIZING by alan-gauthier-jt · Pull Request #6789 · feast-dev/feast

alan-gauthier-jt · 2026-08-27T14:07:12Z

What this does

Adds an opt-in registry config flag, serve_features_while_materializing (default false), that lets online serving continue for a feature view while it is in the MATERIALIZING state.

Problem

The lifecycle serving gate introduced in v0.64.0 (#6401) rejects any feature view whose state is not AVAILABLE_ONLINE or STATE_UNSPECIFIED:

Feature view '<name>' is in state 'MATERIALIZING' and cannot serve features.
Only AVAILABLE_ONLINE feature views can serve.

FeatureStore.materialize() transitions a feature view to MATERIALIZING and commits that state to the registry. In the standard pattern — one shared registry, periodic incremental materialization, and a separate feast serve process — this means routine materialization interrupts online serving until it completes.

Fixes #6780.

Change

When serve_features_while_materializing: true is set under registry:, MATERIALIZING is added to the set of servable states, so servers keep returning the last-materialized values during materialization. States that never had online data (CREATED, GENERATED) remain gated, and the default (false) preserves current behavior.

The flag follows the existing plumbing pattern of enable_online_feature_view_versioning: a RegistryConfig field, copied onto the registry object in __init__ (proto Registry and SqlRegistry), and read via getattr(registry, ...) in the gate.

registry:
  path: ...
  serve_features_while_materializing: true

Testing

New unit tests in test_feature_view_state.py covering: MATERIALIZING blocked by default, served when the flag is on, AVAILABLE_ONLINE served regardless, and CREATED still blocked even with the flag on.
ruff check / ruff format clean; mypy clean; full test_feature_view_state.py suite passes (33/33).

Notes

Python-only: the Go feature server has no equivalent lifecycle gate, so no Go changes are needed.
No proto changes.

codecov-commenter · 2026-08-27T14:10:59Z

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✅ All modified and coverable lines are covered by tests.
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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6789      +/-   ##
==========================================
+ Coverage   47.84%   47.87%   +0.02%     
==========================================
  Files         422      422              
  Lines       52727    52745      +18     
  Branches     7662     7666       +4     
==========================================
+ Hits        25226    25250      +24     
+ Misses      25680    25676       -4     
+ Partials     1821     1819       -2

Flag	Coverage Δ
go-feature-server	`30.58% <ø> (ø)`
python-unit	`49.21% <100.00%> (+0.03%)`	⬆️

Files with missing lines	Coverage Δ
sdk/python/feast/infra/registry/base_registry.py	`74.07% <100.00%> (+0.09%)`	⬆️
sdk/python/feast/infra/registry/registry.py	`62.79% <100.00%> (+0.04%)`	⬆️
sdk/python/feast/infra/registry/remote.py	`45.76% <100.00%> (+0.79%)`	⬆️
sdk/python/feast/infra/registry/snowflake.py	`39.03% <100.00%> (+0.10%)`	⬆️
sdk/python/feast/infra/registry/sql.py	`59.24% <100.00%> (+0.05%)`	⬆️
sdk/python/feast/repo_config.py	`79.52% <100.00%> (+0.49%)`	⬆️
sdk/python/feast/utils.py	`79.40% <100.00%> (+0.73%)`	⬆️

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jyejare

This PR introduces a new configuration option 'serve_features_while_materializing' to allow feature serving to continue during materialization, preventing serving interruptions. The implementation is well-documented and tested, with proper configuration propagation across registry implementations and clear behavioral boundaries for different feature view states.

jyejare · 2026-09-10T07:28:34Z

+    serve_features_while_materializing: StrictBool = False
+    """ bool: Allow online serving to continue for a feature view while it is in
+        the ``MATERIALIZING`` state. When ``feature_store.materialize()`` runs against
+        a shared registry it transitions the feature view to ``MATERIALIZING`` and
+        commits that state, which otherwise causes concurrent feature servers to
+        reject requests until materialization completes. When True, feature views in
+        the ``MATERIALIZING`` state keep serving their last-materialized values.
+        Truly-unavailable states (e.g. ``CREATED``, ``GENERATED``) remain gated. """


[Suggestion] Consider adding validation for incompatible configurations

While the documentation is clear, consider adding runtime validation to ensure this setting doesn't conflict with other registry configurations that might make serving during materialization unsafe.

ntkathole · 2026-09-26T13:47:45Z

@alan-gauthier-jt looks good, only concern is the flag is set on Registry (proto-backed) and SqlRegistry, but not on RemoteRegistry, SnowflakeRegistry, or the base CachingRegistry. The gate in utils.py uses getattr(registry, "serve_features_while_materializing", False), which safely falls back to False - so this won't crash. However, it means the flag silently has no effect for users of those registry backends, with no warning emitted.

alan-gauthier-jt · 2026-09-29T07:42:14Z

@ntkathole Good catch, thanks! The flag now defaults to False on BaseRegistry, and RemoteRegistry and SnowflakeRegistry now read it from their config, so it works on every backend instead of silently doing nothing.

alan-gauthier-jt · 2026-09-29T08:51:02Z

Tests are flaky on master, here's a PR to fix them: #6890

The lifecycle serving gate added in v0.64.0 rejects any feature view not in AVAILABLE_ONLINE / STATE_UNSPECIFIED state. Because materialization transitions a feature view to MATERIALIZING in the shared registry, routine incremental materialization interrupts concurrent feature servers with "cannot serve features. Only AVAILABLE_ONLINE feature views can serve." Add an opt-in registry config flag, serve_features_while_materializing (default False), that also permits serving while a feature view is MATERIALIZING, letting servers keep returning last-materialized values during materialization. States that never had online data (CREATED, GENERATED) remain gated. Fixes feast-dev#6780 Signed-off-by: Alan Gauthier <alan.gauthier@jobteaser.com>

test_module_level_fips_sets_env_before_pyarrow_import spawns a cold subprocess that imports feast.offline_server, pulling in pyarrow and gRPC. On contended CI runners (observed on macOS) this can exceed the 60s timeout and fail with subprocess.TimeoutExpired, even though the import itself is healthy (~3-7s locally). Raise the timeout to 300s to give ample headroom against runner contention while still catching a genuine import hang. Signed-off-by: Alan Gauthier <alan.gauthier@jobteaser.com>

Emit advisory (non-fatal) warnings when the flag is combined with a non-sql registry (no-op) or cache_mode='thread' (state transitions may be observed stale). Signed-off-by: Alan Gauthier <alan.gauthier@jobteaser.com>

Default the flag on BaseRegistry and wire it in RemoteRegistry and SnowflakeRegistry. Signed-off-by: Alan Gauthier <alan.gauthier@jobteaser.com>

# [0.67.0](v0.66.0...v0.67.0) (2026-10-13) ### Bug Fixes * Allow dill 0.4 so UDF serialization works on Python 3.14 ([#6858](#6858)) ([139704f](139704f)) * Allow serving features while a feature view is MATERIALIZING ([#6789](#6789)) ([e2d7fe2](e2d7fe2)), closes [#6780](#6780) * Allowlist the pinned commit SHA flagged by detect-secrets ([4b81d18](4b81d18)) * Apply point-in-time filter correctly with the Polars backend ([#6992](#6992)) ([01224d0](01224d0)) * Authorize registry server writes before deserializing UDFs ([e0ef16e](e0ef16e)) * Automate versioned documentation publication ([#6763](#6763)) ([5ad5592](5ad5592)), closes [#6762](#6762) * Avoid NumPy generic-unit deprecation when importing feast.type_map ([5fea698](5fea698)) * Bind metrics, REST registry, ui, and lineage servers dual-stack ([#6886](#6886)) ([8d2773c](8d2773c)) * Bound Arrow Flight batch size in the offline server ([#6896](#6896)) ([d169238](d169238)) * Compute std and var correctly for tiled aggregations ([213a130](213a130)) * Convert PdfBytes values to protos like ImageBytes ([#6968](#6968)) ([af20fe4](af20fe4)) * Decode fixed_size_list as the matching Feast list value type ([#6944](#6944)) ([8cfe891](8cfe891)) * Do not log /metrics requests from the pre-fork metrics server thread ([7087f1f](7087f1f)), closes [#6928](#6928) * Don't return from finally blocks in REST registry helpers ([d7cb4d0](d7cb4d0)) * Encode non-finite floats in feature server JSON responses ([#6930](#6930)) ([211ecb8](211ecb8)) * Feature freshness logic updated ([#6765](#6765)) ([f0bc070](f0bc070)) * Fix monitoring auth ([015cc84](015cc84)) * Handle non-nanosecond timestamps in tiled aggregations ([b8989cb](b8989cb)) * Improve feature list column sizing ([#6793](#6793)) ([2573693](2573693)) * Include vector attributes in Field equality ([#6934](#6934)) ([298c3f6](298c3f6)) * Increase feast container probe timeouts to avoid false restarts ([e8dbd50](e8dbd50)) * Infer the tensor type from retrieved values in to_tensor ([a03e323](a03e323)) * Infer timestamps for datetime columns in any unit or timezone ([810391f](810391f)) * Infer vector width when vector_length is undeclared ([0056565](0056565)), closes [#6907](#6907) * Initialize auth managers in standalone lineage server ([#6873](#6873)) ([ecd0d38](ecd0d38)) * Keep a zero watermark delay threshold on a Kafka source ([e2e28c7](e2e28c7)) * Keep entity rows apart in the ibis point-in-time join ([a87c070](a87c070)) * Keep the BatchFeatureView type and settings when copying it ([#6989](#6989)) ([013fc57](013fc57)) * Keep tiling, offline and stream engine settings when copying a StreamFeatureView ([fac0f88](fac0f88)) * Limit tiled max and min aggregations to the window ([2583c45](2583c45)) * Load Milvus collections once instead of on every query ([#6882](#6882)) ([f9e91fa](f9e91fa)) * Make vector length validation reachable, schema-driven and vectorized ([#6909](#6909)) ([29af8c0](29af8c0)), closes [#6907](#6907) * Map INT32_LIST, PDF_BYTES and IMAGE_BYTES type names to their ValueType ([8c1e825](8c1e825)) * Map narrow and unsigned Arrow integer types to Feast value types ([#6960](#6960)) ([ae74360](ae74360)) * Map Spark smallint and tinyint columns to INT32 ([9d42729](9d42729)) * Map SQL Server bigint to INT64 and float to DOUBLE ([6d15533](6d15533)) * Map Trino DECIMAL columns to pyarrow decimal128 ([155bc24](155bc24)) * Normalize Arrow-backed dtypes from Ray Dataset.to_pandas() for pyarrow >=25 compatibility ([#6916](#6916)) ([374f1d7](374f1d7)) * **operator:** Set grpc appProtocol on the offline Service port ([f9dcfb5](f9dcfb5)) * Pin expected tensor to same device in online retrieval test ([#6777](#6777)) ([1f2584d](1f2584d)) * Preserve an unset aggregation time window across a proto round-trip ([2000379](2000379)) * Preserve entity row order in precomputed reads ([ce37029](ce37029)) * Pull the MinIO test image from pgsty/minio ([fe27230](fe27230)) * Pull the MinIO test image from quay ([#6838](#6838)) ([367001b](367001b)) * Raise Trino monitoring query errors other than a missing table ([6161766](6161766)) * Read Kafka and Kinesis sources without a batch source from proto ([a620f5c](a620f5c)) * Read naive datetimes as UTC in UnixTimestamp values ([bc703d9](bc703d9)) * Record which storage class wrote a custom_storage payload ([#6988](#6988)) ([c0545f7](c0545f7)) * Refresh the SQL registry cache after deleting a data source ([66c55e3](66c55e3)) * Refresh the SQL registry cache after deleting a permission ([6b212f5](6b212f5)) * Reject unknown resource types and actions in the REST permission API ([a5eaa36](a5eaa36)) * Remove pip install command from Redis GLIDE docstring ([66ff990](66ff990)) * Remove runtime pip install hints from mlflow errors ([dd9f099](dd9f099)) * Remove unsupported vector_len from PostgreSQL tutorial config ([fcc9a85](fcc9a85)) * Repair Chronon operator validation and Pixi CI setup ([#6947](#6947)) ([3710f78](3710f78)) * Report Dask monitoring read errors instead of no data ([81673d9](81673d9)) * Resolve feature view batch source name against registry ([f8883d0](f8883d0)) * Restrict UI server CORS to trusted origins ([#6986](#6986)) ([5e7ef3e](5e7ef3e)) * Return feature_view_metadata from the REST feature server ([#6927](#6927)) ([bc5aeef](bc5aeef)) * Serve aliased on demand feature views in feature services ([823b92e](823b92e)) * Snapshot tag filters in registry cache keys ([81e1546](81e1546)) * Stabilize materialization checks across hour boundaries ([#6948](#6948)) ([acadb17](acadb17)) * Stop the Couchbase online store reporting failed writes as written ([b3f3c98](b3f3c98)) * Support SQL registry dump ([b60f9c7](b60f9c7)) * Treat datetimes with a None utcoffset as naive ([687bee8](687bee8)) * Unwrap SecretStr tokens when building Trino auth objects ([#6771](#6771)) ([922db5c](922db5c)) * Use a valid ShuffleStrategy for the Ray DatasetContext ([6259f5c](6259f5c)) * Use do_exchange for offline server reads to support HPA ([bae07fc](bae07fc)) * Use group_by in Polars backend aggregation ([#6965](#6965)) ([7b9fad2](7b9fad2)) * Use upstream kubectl image as feast-operator CronJob default ([d6cc1dc](d6cc1dc)) * Use UTC end bound and correct docs for disable_event_timestamp ([#6956](#6956)) ([cc07c82](cc07c82)), closes [#6936](#6936) ### Features * Add a non-JVM read path for Lance data sources ([#6943](#6943)) ([e2a53bb](e2a53bb)), closes [#6925](#6925) [#5782](#5782) [#6909](#6909) * Add a non-JVM write path for Lance data sources ([#6945](#6945)) ([f754323](f754323)), closes [#6943](#6943) [#6909](#6909) * Add Chronon online and offline store integrations ([#6188](#6188)) ([dd059c6](dd059c6)) * Add consistency_level to the Milvus online store config ([97296c1](97296c1)) * Add dualStack server option to the Feast operator ([#6887](#6887)) ([725a147](725a147)), closes [#6977](#6977) * Add Lance optional dependencies ([#6958](#6958)) ([20bc993](20bc993)) * Add LanceFormat table format with version/tag pinning ([1196e22](1196e22)), closes [#5650](#5650) * Add MLflow as a first-class offline DataSource for Feast ([#6702](#6702)) ([3667772](3667772)) * Add optional GLIDE client for Redis online reads ([#6870](#6870)) ([6e9a532](6e9a532)) * Add quality monitoring features for Trino offline store ([#6779](#6779)) ([9340545](9340545)) * Add SavedDatasetLanceStorage ([1118d3e](1118d3e)) * Add standalone MCP server as a first-class component ([0efab5c](0efab5c)), closes [python-keycloak#623](https://github.com/python-keycloak/issues/623) * Add structured audit logging for MCP feature server ([#6456](#6456)) ([640ac70](640ac70)) * Add Trino compute engine for batch retrieval and materialization ([#6898](#6898)) ([11a47b4](11a47b4)) * Batch Postgres online reads across feature views ([#6832](#6832)) ([514bee7](514bee7)), closes [#3259](#3259) * **bigtable:** Make write batch size and concurrency configurable ([#6847](#6847)) ([5388522](5388522)) * Bucket feature count labels in latency metrics ([#6811](#6811)) ([d9ea120](d9ea120)) * Expose runtime version in Feast UI ([#6843](#6843)) ([fa8f06b](fa8f06b)) * Make Milvus index and search params configurable ([ef743ff](ef743ff)) * Offline write batch for IcebergSource ([5be5ed0](5be5ed0)) * OpenLineage consumer improvements - dataset versioning, column lineage, ownership ([69f294e](69f294e)) * **operator:** Add tolerations and nodeSelector to the FeatureStore CR ([#6741](#6741)) ([03dac6f](03dac6f)) * Serve the MCP server dual-stack on --host :: ([4fc9726](4fc9726)) * Support Milvus partition keys in the Milvus online store ([0ed3285](0ed3285)) * Support token, uri and db_name in the Milvus online store ([c5efecd](c5efecd)) * Version-pinning for FeatureService (online + offline) ([#6718](#6718)) ([787845a](787845a)) ### Performance Improvements * Avoid pandas copy in Spark reads ([#6878](#6878)) ([4771156](4771156)) * Decouple metrics HTTP server into a dedicated child process ([#6855](#6855)) ([0b621de](0b621de)) * Reduce online serving hot-path overhead from metrics and audit logging ([5ee7ee3](5ee7ee3))

* fix: Increase feast container probe timeouts to avoid false restarts Signed-off-by: Srihari <svenkata@redhat.com> * chore: Remove unused hermeto offline tree and sdist requirement locks (feast-dev#6987) * chore: Remove unused multicloud hermeto offline build tree Drop sdk/python/feast/infra/feature_servers/multicloud/offline/, which only supported local hermeto/arrow-from-source and RPM lock offline image builds and is unused by Makefile CI, GitHub Actions, or the standard feature-server Dockerfiles. Also clear related .secrets.baseline entries. Signed-off-by: ntkathole <nikhilkathole2683@gmail.com> Co-authored-by: Cursor <cursoragent@cursor.com> * chore: Drop unused minimal-sdist requirement locks Remove py3.10–3.12 minimal-sdist(-build) lockfiles, stop generating them in lock-python-dependencies-all, and delete the minimal-sdist-build extra. They only supported hermeto build-from-sdist offline image builds. Signed-off-by: ntkathole <nikhilkathole2683@gmail.com> Co-authored-by: Cursor <cursoragent@cursor.com> * chore: Refresh pixi.lock after removing minimal-sdist-build Keep pixi install --locked in sync with the pyproject.toml optional dependency change so ray/duckdb CI environments can install. Signed-off-by: ntkathole <nikhilkathole2683@gmail.com> Co-authored-by: Cursor <cursoragent@cursor.com> --------- Signed-off-by: ntkathole <nikhilkathole2683@gmail.com> Co-authored-by: Cursor <cursoragent@cursor.com> * chore(release): release 0.67.0 # [0.67.0](feast-dev/feast@v0.66.0...v0.67.0) (2026-10-13) ### Bug Fixes * Allow dill 0.4 so UDF serialization works on Python 3.14 ([feast-dev#6858](feast-dev#6858)) ([139704f](feast-dev@139704f)) * Allow serving features while a feature view is MATERIALIZING ([feast-dev#6789](feast-dev#6789)) ([e2d7fe2](feast-dev@e2d7fe2)), closes [feast-dev#6780](feast-dev#6780) * Allowlist the pinned commit SHA flagged by detect-secrets ([4b81d18](feast-dev@4b81d18)) * Apply point-in-time filter correctly with the Polars backend ([feast-dev#6992](feast-dev#6992)) ([01224d0](feast-dev@01224d0)) * Authorize registry server writes before deserializing UDFs ([e0ef16e](feast-dev@e0ef16e)) * Automate versioned documentation publication ([feast-dev#6763](feast-dev#6763)) ([5ad5592](feast-dev@5ad5592)), closes [feast-dev#6762](feast-dev#6762) * Avoid NumPy generic-unit deprecation when importing feast.type_map ([5fea698](feast-dev@5fea698)) * Bind metrics, REST registry, ui, and lineage servers dual-stack ([feast-dev#6886](feast-dev#6886)) ([8d2773c](feast-dev@8d2773c)) * Bound Arrow Flight batch size in the offline server ([feast-dev#6896](feast-dev#6896)) ([d169238](feast-dev@d169238)) * Compute std and var correctly for tiled aggregations ([213a130](feast-dev@213a130)) * Convert PdfBytes values to protos like ImageBytes ([feast-dev#6968](feast-dev#6968)) ([af20fe4](feast-dev@af20fe4)) * Decode fixed_size_list as the matching Feast list value type ([feast-dev#6944](feast-dev#6944)) ([8cfe891](feast-dev@8cfe891)) * Do not log /metrics requests from the pre-fork metrics server thread ([7087f1f](feast-dev@7087f1f)), closes [feast-dev#6928](feast-dev#6928) * Don't return from finally blocks in REST registry helpers ([d7cb4d0](feast-dev@d7cb4d0)) * Encode non-finite floats in feature server JSON responses ([feast-dev#6930](feast-dev#6930)) ([211ecb8](feast-dev@211ecb8)) * Feature freshness logic updated ([feast-dev#6765](feast-dev#6765)) ([f0bc070](feast-dev@f0bc070)) * Fix monitoring auth ([015cc84](feast-dev@015cc84)) * Handle non-nanosecond timestamps in tiled aggregations ([b8989cb](feast-dev@b8989cb)) * Improve feature list column sizing ([feast-dev#6793](feast-dev#6793)) ([2573693](feast-dev@2573693)) * Include vector attributes in Field equality ([feast-dev#6934](feast-dev#6934)) ([298c3f6](feast-dev@298c3f6)) * Increase feast container probe timeouts to avoid false restarts ([e8dbd50](feast-dev@e8dbd50)) * Infer the tensor type from retrieved values in to_tensor ([a03e323](feast-dev@a03e323)) * Infer timestamps for datetime columns in any unit or timezone ([810391f](feast-dev@810391f)) * Infer vector width when vector_length is undeclared ([0056565](feast-dev@0056565)), closes [feast-dev#6907](feast-dev#6907) * Initialize auth managers in standalone lineage server ([feast-dev#6873](feast-dev#6873)) ([ecd0d38](feast-dev@ecd0d38)) * Keep a zero watermark delay threshold on a Kafka source ([e2e28c7](feast-dev@e2e28c7)) * Keep entity rows apart in the ibis point-in-time join ([a87c070](feast-dev@a87c070)) * Keep the BatchFeatureView type and settings when copying it ([feast-dev#6989](feast-dev#6989)) ([013fc57](feast-dev@013fc57)) * Keep tiling, offline and stream engine settings when copying a StreamFeatureView ([fac0f88](feast-dev@fac0f88)) * Limit tiled max and min aggregations to the window ([2583c45](feast-dev@2583c45)) * Load Milvus collections once instead of on every query ([feast-dev#6882](feast-dev#6882)) ([f9e91fa](feast-dev@f9e91fa)) * Make vector length validation reachable, schema-driven and vectorized ([feast-dev#6909](feast-dev#6909)) ([29af8c0](feast-dev@29af8c0)), closes [feast-dev#6907](feast-dev#6907) * Map INT32_LIST, PDF_BYTES and IMAGE_BYTES type names to their ValueType ([8c1e825](feast-dev@8c1e825)) * Map narrow and unsigned Arrow integer types to Feast value types ([feast-dev#6960](feast-dev#6960)) ([ae74360](feast-dev@ae74360)) * Map Spark smallint and tinyint columns to INT32 ([9d42729](feast-dev@9d42729)) * Map SQL Server bigint to INT64 and float to DOUBLE ([6d15533](feast-dev@6d15533)) * Map Trino DECIMAL columns to pyarrow decimal128 ([155bc24](feast-dev@155bc24)) * Normalize Arrow-backed dtypes from Ray Dataset.to_pandas() for pyarrow >=25 compatibility ([feast-dev#6916](feast-dev#6916)) ([374f1d7](feast-dev@374f1d7)) * **operator:** Set grpc appProtocol on the offline Service port ([f9dcfb5](feast-dev@f9dcfb5)) * Pin expected tensor to same device in online retrieval test ([feast-dev#6777](feast-dev#6777)) ([1f2584d](feast-dev@1f2584d)) * Preserve an unset aggregation time window across a proto round-trip ([2000379](feast-dev@2000379)) * Preserve entity row order in precomputed reads ([ce37029](feast-dev@ce37029)) * Pull the MinIO test image from pgsty/minio ([fe27230](feast-dev@fe27230)) * Pull the MinIO test image from quay ([feast-dev#6838](feast-dev#6838)) ([367001b](feast-dev@367001b)) * Raise Trino monitoring query errors other than a missing table ([6161766](feast-dev@6161766)) * Read Kafka and Kinesis sources without a batch source from proto ([a620f5c](feast-dev@a620f5c)) * Read naive datetimes as UTC in UnixTimestamp values ([bc703d9](feast-dev@bc703d9)) * Record which storage class wrote a custom_storage payload ([feast-dev#6988](feast-dev#6988)) ([c0545f7](feast-dev@c0545f7)) * Refresh the SQL registry cache after deleting a data source ([66c55e3](feast-dev@66c55e3)) * Refresh the SQL registry cache after deleting a permission ([6b212f5](feast-dev@6b212f5)) * Reject unknown resource types and actions in the REST permission API ([a5eaa36](feast-dev@a5eaa36)) * Remove pip install command from Redis GLIDE docstring ([66ff990](feast-dev@66ff990)) * Remove runtime pip install hints from mlflow errors ([dd9f099](feast-dev@dd9f099)) * Remove unsupported vector_len from PostgreSQL tutorial config ([fcc9a85](feast-dev@fcc9a85)) * Repair Chronon operator validation and Pixi CI setup ([feast-dev#6947](feast-dev#6947)) ([3710f78](feast-dev@3710f78)) * Report Dask monitoring read errors instead of no data ([81673d9](feast-dev@81673d9)) * Resolve feature view batch source name against registry ([f8883d0](feast-dev@f8883d0)) * Restrict UI server CORS to trusted origins ([feast-dev#6986](feast-dev#6986)) ([5e7ef3e](feast-dev@5e7ef3e)) * Return feature_view_metadata from the REST feature server ([feast-dev#6927](feast-dev#6927)) ([bc5aeef](feast-dev@bc5aeef)) * Serve aliased on demand feature views in feature services ([823b92e](feast-dev@823b92e)) * Snapshot tag filters in registry cache keys ([81e1546](feast-dev@81e1546)) * Stabilize materialization checks across hour boundaries ([feast-dev#6948](feast-dev#6948)) ([acadb17](feast-dev@acadb17)) * Stop the Couchbase online store reporting failed writes as written ([b3f3c98](feast-dev@b3f3c98)) * Support SQL registry dump ([b60f9c7](feast-dev@b60f9c7)) * Treat datetimes with a None utcoffset as naive ([687bee8](feast-dev@687bee8)) * Unwrap SecretStr tokens when building Trino auth objects ([feast-dev#6771](feast-dev#6771)) ([922db5c](feast-dev@922db5c)) * Use a valid ShuffleStrategy for the Ray DatasetContext ([6259f5c](feast-dev@6259f5c)) * Use do_exchange for offline server reads to support HPA ([bae07fc](feast-dev@bae07fc)) * Use group_by in Polars backend aggregation ([feast-dev#6965](feast-dev#6965)) ([7b9fad2](feast-dev@7b9fad2)) * Use upstream kubectl image as feast-operator CronJob default ([d6cc1dc](feast-dev@d6cc1dc)) * Use UTC end bound and correct docs for disable_event_timestamp ([feast-dev#6956](feast-dev#6956)) ([cc07c82](feast-dev@cc07c82)), closes [feast-dev#6936](feast-dev#6936) ### Features * Add a non-JVM read path for Lance data sources ([feast-dev#6943](feast-dev#6943)) ([e2a53bb](feast-dev@e2a53bb)), closes [feast-dev#6925](feast-dev#6925) [feast-dev#5782](feast-dev#5782) [feast-dev#6909](feast-dev#6909) * Add a non-JVM write path for Lance data sources ([feast-dev#6945](feast-dev#6945)) ([f754323](feast-dev@f754323)), closes [feast-dev#6943](feast-dev#6943) [feast-dev#6909](feast-dev#6909) * Add Chronon online and offline store integrations ([feast-dev#6188](feast-dev#6188)) ([dd059c6](feast-dev@dd059c6)) * Add consistency_level to the Milvus online store config ([97296c1](feast-dev@97296c1)) * Add dualStack server option to the Feast operator ([feast-dev#6887](feast-dev#6887)) ([725a147](feast-dev@725a147)), closes [feast-dev#6977](feast-dev#6977) * Add Lance optional dependencies ([feast-dev#6958](feast-dev#6958)) ([20bc993](feast-dev@20bc993)) * Add LanceFormat table format with version/tag pinning ([1196e22](feast-dev@1196e22)), closes [feast-dev#5650](feast-dev#5650) * Add MLflow as a first-class offline DataSource for Feast ([feast-dev#6702](feast-dev#6702)) ([3667772](feast-dev@3667772)) * Add optional GLIDE client for Redis online reads ([feast-dev#6870](feast-dev#6870)) ([6e9a532](feast-dev@6e9a532)) * Add quality monitoring features for Trino offline store ([feast-dev#6779](feast-dev#6779)) ([9340545](feast-dev@9340545)) * Add SavedDatasetLanceStorage ([1118d3e](feast-dev@1118d3e)) * Add standalone MCP server as a first-class component ([0efab5c](feast-dev@0efab5c)), closes [python-keycloak#623](https://github.com/python-keycloak/issues/623) * Add structured audit logging for MCP feature server ([feast-dev#6456](feast-dev#6456)) ([640ac70](feast-dev@640ac70)) * Add Trino compute engine for batch retrieval and materialization ([feast-dev#6898](feast-dev#6898)) ([11a47b4](feast-dev@11a47b4)) * Batch Postgres online reads across feature views ([feast-dev#6832](feast-dev#6832)) ([514bee7](feast-dev@514bee7)), closes [feast-dev#3259](feast-dev#3259) * **bigtable:** Make write batch size and concurrency configurable ([feast-dev#6847](feast-dev#6847)) ([5388522](feast-dev@5388522)) * Bucket feature count labels in latency metrics ([feast-dev#6811](feast-dev#6811)) ([d9ea120](feast-dev@d9ea120)) * Expose runtime version in Feast UI ([feast-dev#6843](feast-dev#6843)) ([fa8f06b](feast-dev@fa8f06b)) * Make Milvus index and search params configurable ([ef743ff](feast-dev@ef743ff)) * Offline write batch for IcebergSource ([5be5ed0](feast-dev@5be5ed0)) * OpenLineage consumer improvements - dataset versioning, column lineage, ownership ([69f294e](feast-dev@69f294e)) * **operator:** Add tolerations and nodeSelector to the FeatureStore CR ([feast-dev#6741](feast-dev#6741)) ([03dac6f](feast-dev@03dac6f)) * Serve the MCP server dual-stack on --host :: ([4fc9726](feast-dev@4fc9726)) * Support Milvus partition keys in the Milvus online store ([0ed3285](feast-dev@0ed3285)) * Support token, uri and db_name in the Milvus online store ([c5efecd](feast-dev@c5efecd)) * Version-pinning for FeatureService (online + offline) ([feast-dev#6718](feast-dev#6718)) ([787845a](feast-dev@787845a)) ### Performance Improvements * Avoid pandas copy in Spark reads ([feast-dev#6878](feast-dev#6878)) ([4771156](feast-dev@4771156)) * Decouple metrics HTTP server into a dedicated child process ([feast-dev#6855](feast-dev#6855)) ([0b621de](feast-dev@0b621de)) * Reduce online serving hot-path overhead from metrics and audit logging ([5ee7ee3](feast-dev@5ee7ee3)) --------- Signed-off-by: Srihari <svenkata@redhat.com> Signed-off-by: ntkathole <nikhilkathole2683@gmail.com> Co-authored-by: Srihari <svenkata@redhat.com> Co-authored-by: Cursor <cursoragent@cursor.com> Co-authored-by: feast-ci-bot <feast-ci-bot@willem.co>

alan-gauthier-jt marked this pull request as ready for review August 27, 2026 14:09

alan-gauthier-jt requested a review from a team as a code owner August 27, 2026 14:09

alan-gauthier-jt force-pushed the fix/serve-features-while-materializing branch from f9755ad to 9ae554a Compare September 3, 2026 07:00

jyejare approved these changes Sep 10, 2026

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alan-gauthier-jt force-pushed the fix/serve-features-while-materializing branch 4 times, most recently from a8e32e3 to a318242 Compare September 15, 2026 09:18

alan-gauthier-jt force-pushed the fix/serve-features-while-materializing branch from a318242 to 8fe805a Compare September 22, 2026 06:46

ntkathole force-pushed the fix/serve-features-while-materializing branch 2 times, most recently from 4206637 to b78ba01 Compare September 26, 2026 13:34

ntkathole added the ok-to-test label Sep 26, 2026

alan-gauthier-jt force-pushed the fix/serve-features-while-materializing branch from b78ba01 to 2f439a0 Compare September 29, 2026 07:42

alan-gauthier-jt force-pushed the fix/serve-features-while-materializing branch from 2f439a0 to 42ff591 Compare September 29, 2026 07:51

ntkathole approved these changes Sep 29, 2026

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alan-gauthier-jt mentioned this pull request Sep 29, 2026

test: Run MCP audit handler coroutines with asyncio.run #6890

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alan-gauthier-jt added 4 commits September 29, 2026 14:39

feat: Warn on unsafe serve_features_while_materializing configs

c473fa3

Emit advisory (non-fatal) warnings when the flag is combined with a non-sql registry (no-op) or cache_mode='thread' (state transitions may be observed stale). Signed-off-by: Alan Gauthier <alan.gauthier@jobteaser.com>

fix: Honor serve_features_while_materializing on all registry backends

b696c79

Default the flag on BaseRegistry and wire it in RemoteRegistry and SnowflakeRegistry. Signed-off-by: Alan Gauthier <alan.gauthier@jobteaser.com>

ntkathole force-pushed the fix/serve-features-while-materializing branch from 42ff591 to b696c79 Compare September 29, 2026 09:09

ntkathole merged commit e2d7fe2 into feast-dev:master Sep 29, 2026
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rhods-devops-app Bot mentioned this pull request Oct 14, 2026

Automated Sync from main to stable red-hat-data-services/feast#493

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fix: Allow serving features while a feature view is MATERIALIZING - #6789

fix: Allow serving features while a feature view is MATERIALIZING#6789
ntkathole merged 4 commits into
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