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What this PR does / why we need it:

Add improvements to the AWS Lambda materialization engine:

  1. Use Json structured logging instead of print statements.
  2. Use context manager for temporary directory.
  3. Fix broken import of DEFAULT_BATCH_SIZE.

Which issue(s) this PR fixes:

Misc

@nanohanno nanohanno requested a review from a team as a code owner January 12, 2026 14:28
@nanohanno nanohanno changed the title Update lambda materialization engine feat: Improve lambda materialization engine Jan 12, 2026
@nanohanno nanohanno force-pushed the hk/update-lambda-materialization-engine branch from 87e8826 to 92cfb48 Compare January 12, 2026 14:34
Signed-off-by: hkuepers <hanno.kuepers@ratepay.com>
@nanohanno nanohanno force-pushed the hk/update-lambda-materialization-engine branch from 92cfb48 to 6e62fcf Compare January 12, 2026 14:54
@franciscojavierarceo franciscojavierarceo merged commit f6116f9 into feast-dev:master Jan 16, 2026
16 of 17 checks passed
franciscojavierarceo pushed a commit that referenced this pull request Jan 16, 2026
# [0.59.0](v0.58.0...v0.59.0) (2026-01-16)

### Bug Fixes

* Add get_table_query_string_with_alias() for PostgreSQL subquery aliasing ([#5811](#5811)) ([11122ce](11122ce))
* Add hybrid online store to ONLINE_STORE_CLASS_FOR_TYPE mapping ([#5810](#5810)) ([678589b](678589b))
* Add possibility to overwrite send_receive_timeout for clickhouse offline store ([#5792](#5792)) ([59dbb33](59dbb33))
* Denial by default to all resources when no permissions set  ([#5663](#5663)) ([1524f1c](1524f1c))
* Make operator include full OIDC secret in repo config ([#5676](#5676)) ([#5809](#5809)) ([a536bc2](a536bc2))
* Populate Postgres `registry.path` during `feast init` ([#5785](#5785)) ([f293ae8](f293ae8))
* **redis:** Preserve millisecond timestamp precision for Redis online store ([#5807](#5807)) ([9e3f213](9e3f213))
* Search API to return all matching tags in matched_tags field ([#5843](#5843)) ([de37f66](de37f66))
* Spark Materialization Engine Cannot Infer Schema ([#5806](#5806)) ([58d0325](58d0325)), closes [#5594](#5594) [#5594](#5594)
* Support arro3 table schema with newer deltalake packages ([#5799](#5799)) ([103c5e9](103c5e9))
* Timestamp formatting and lakehouse-type connector for trino_offline_store. ([#5846](#5846)) ([c2ea7e9](c2ea7e9))
* Update model_validator to use instance method signature (Pydantic v2.12 deprecation) ([#5825](#5825)) ([3c10b6e](3c10b6e))

### Features

* Add dbt integration for importing models as FeatureViews ([#5827](#5827)) ([b997361](b997361)), closes [#3335](#3335) [#3335](#3335) [#3335](#3335)
* Add GCS registry store in Go feature server ([#5818](#5818)) ([1dc2be5](1dc2be5))
* Add progress bar to CLI from feast apply ([#5867](#5867)) ([ab3562b](ab3562b))
* Add RBAC blog post to website ([#5861](#5861)) ([b1844a3](b1844a3))
* Add skip_feature_view_validation parameter to FeatureStore.apply() and plan() ([#5859](#5859)) ([5482a0e](5482a0e))
* Added batching to feature server /push to offline store ([#5683](#5683)) ([#5729](#5729)) ([ce35ce6](ce35ce6))
* Enable static artifacts for feature server that can be used in Feature Transformations ([#5787](#5787)) ([edefc3f](edefc3f))
* Improve lambda materialization engine ([#5829](#5829)) ([f6116f9](f6116f9))
* Offline Store historical features retrieval based on datetime range in Ray ([#5738](#5738)) ([e484c12](e484c12))
* Read, Save docs and chat fixes ([#5865](#5865)) ([2081b55](2081b55))
* Resolve pyarrow >21 installation with ibis-framework ([#5847](#5847)) ([8b9bb50](8b9bb50))
* Support staging for spark materialization ([#5671](#5671)) ([#5797](#5797)) ([5b787af](5b787af))
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3 participants