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feat: Make online_write_batch_size configurable in MaterializationConfig#6268

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ntkathole merged 2 commits intofeast-dev:masterfrom
cutoutsy:feat/configurable-online-write-batch-size
Apr 14, 2026
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feat: Make online_write_batch_size configurable in MaterializationConfig#6268
ntkathole merged 2 commits intofeast-dev:masterfrom
cutoutsy:feat/configurable-online-write-batch-size

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@cutoutsy cutoutsy commented Apr 13, 2026

What this PR does / why we need it:

Add a configurable online_write_batch_size option to MaterializationConfig for controlling batch size during online store writes.

Changes:

  • Add online_write_batch_size: Optional[int] = None to MaterializationConfig
  • When None (default): write all rows in a single batch (backward compatible)
  • When set to a positive integer: write rows in batches of that size

Usage in feature_store.yaml:

materialization:
  online_write_batch_size: 10000

This allows users to control memory usage during materialization for large datasets.

Which issue(s) this PR fixes:

Fixes #6160


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@cutoutsy cutoutsy requested a review from a team as a code owner April 13, 2026 03:56
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@cutoutsy cutoutsy force-pushed the feat/configurable-online-write-batch-size branch 2 times, most recently from de8fe04 to 654b5e4 Compare April 13, 2026 06:15
Comment thread sdk/python/feast/infra/compute_engines/local/nodes.py Outdated
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@cutoutsy can we please also have a test case that exercises the batched write path ?

Comment thread sdk/python/feast/repo_config.py Outdated
@cutoutsy cutoutsy force-pushed the feat/configurable-online-write-batch-size branch from d653115 to bff1499 Compare April 14, 2026 02:27
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@cutoutsy can we please also have a test case that exercises the batched write path ?

Added two unit tests for the batched write functionality.

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looks good, Thanks @cutoutsy

Comment thread sdk/python/feast/infra/compute_engines/local/nodes.py
@ntkathole ntkathole force-pushed the feat/configurable-online-write-batch-size branch from bff1499 to 8b4ea7a Compare April 14, 2026 10:06
@ntkathole ntkathole merged commit d41becf into feast-dev:master Apr 14, 2026
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franciscojavierarceo pushed a commit that referenced this pull request May 4, 2026
# [0.63.0](v0.62.0...v0.63.0) (2026-05-04)

### Bug Fixes

* Add project filter to apply_data_source and delete_data_source (closes [#6206](#6206)) ([#6322](#6322)) ([96562c4](96562c4))
* Add project_id filter to SnowflakeRegistry UPDATE path ([#6243](#6243)) ([6658b71](6658b71)), closes [#6208](#6208) [#6208](#6208)
* Add subprocess timeouts to prevent test_e2e_local hanging on Dask atexit handler ([3de6556](3de6556))
* Ambiguous truth value of array during materialization ([#6259](#6259)) ([d0c8984](d0c8984))
* Auto-detect GCS/S3 registry store when registry is passed as string ([#6260](#6260)) ([7ebcf03](7ebcf03))
* **bigquery:** Prefer query over table in get_table_query_string ([#6360](#6360)) ([77ed779](77ed779)), closes [#6200](#6200)
* correct project_id scoping in get_user_metadata and delete_project ([0c469a7](0c469a7))
* disable Redis RDB persistence in test deployments ([44cd682](44cd682))
* Disable snowflake tests temporarily in CI ([#6356](#6356)) ([31d5a98](31d5a98))
* Filter empty SQL commands at execute_snowflake_statement call sites ([#6249](#6249)) ([92ffbb9](92ffbb9))
* Fix five bugs in milvus online store ([#6275](#6275)) ([212504b](212504b))
* Fix issue with apply feature view ([835cda8](835cda8))
* Fix streaming materialization for exotic sources with lazy UDF pipelines ([c07972d](c07972d))
* Handle missing features gracefully instead of panicking ([7d00b3a](7d00b3a))
* Harden informer cache with label selectors and memory optimizations ([#6242](#6242)) ([3f11356](3f11356))
* **helm:** Avoid nil pointer for metrics.enabled inside podAnnotations ([#6251](#6251)) ([c833f1a](c833f1a))
* Include git in feast server image ([fb03c46](fb03c46))
* Include StreamFeatureView in freshness metric ([#6269](#6269)) ([463f16c](463f16c))
* Pre-create S3A event log dir before SparkContext init ([#6317](#6317)) ([9feca77](9feca77))
* Remote Online Store Type Inference Error with All-NULL Columns ([#6063](#6063)) ([de67bdd](de67bdd))
* Remove selector with kustomize overlay using a JSON 6902 patch ([9107a43](9107a43))
* Resolve multiple bugs in SnowflakeRegistry and Snowflake connection handling ([#6315](#6315)) ([7e66a2e](7e66a2e))
* **spark:** BatchFeatureView with TransformationMode.PYTHON now reads all source columns ([a310eaf](a310eaf))
* **spark:** Use SELECT * when feature_name_columns is empty in pull_all_from_table_or_query ([e1b1d2d](e1b1d2d))
* Support pandas mode in feature builder and fix dask column extraction ([863315e](863315e))
* support SQL string as entity_df in RemoteOfflineStore.get_historical_features ([c559889](c559889))
* Wrap LocalOutputNode return value in ArrowTableValue for consist… ([#6286](#6286)) ([a16cd55](a16cd55))

### Features

* Add agent skills and Cursor/Claude rules for Feast development ([312eea3](312eea3))
* Add feature view versioning support to FAISS online store ([b36acb7](b36acb7))
* Add feature view versioning support to Redis and DynamoDB online stores ([#6257](#6257)) ([edf25af](edf25af)), closes [#6164](#6164) [#6163](#6163)
* Add optional 'org' in feature view ([#6288](#6288)) ([#6301](#6301)) ([608b105](608b105))
* Add RaySource, to_ray_dataset first-class method, docs, and tests ([1c98157](1c98157))
* Add TLS support for Go Feature Server ([#6229](#6229)) ([28a58d0](28a58d0))
* Add Vector Search support to MongoDBOnlineStore ([#6344](#6344)) ([c102738](c102738))
* Add versioning support to Milvus online store ([#6330](#6330)) ([3268ced](3268ced))
* Addresses performance issues in the Redis online store ([2e50da0](2e50da0))
* Allow to set gpu for ray ([5580ab4](5580ab4))
* Bump redis-py version cap from <5 to <8 ([#6339](#6339)) ([9538180](9538180))
* Expose feature_server, materialization, and openlineage configuration via FeatureStore CRD ([ec6ecfd](ec6ecfd))
* Make online_write_batch_size configurable in MaterializationConfig ([#6268](#6268)) ([d41becf](d41becf))
* Make udf optional if agg defined ([#5689](#5689)) ([#6328](#6328)) ([f630056](f630056))
* MongoDB offline store ([#6138](#6138)) ([8eebad7](8eebad7))
* Optional input_schema for ODFV ([#6308](#6308)) ([#6312](#6312)) ([f08b4e8](f08b4e8))
* Provision minimal TokenReview RBAC for OIDC auth and add SSL error logging in token parser ([#6240](#6240)) ([dca57e8](dca57e8))
* **spark:** Add compute-on-read support for BatchFeatureView in get_… ([#6357](#6357)) ([630d9f8](630d9f8))
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Materializes all rows as Python proto objects — high memory usage at scale

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