feat: Support table format: Iceberg, Delta, and Hudi by HaoXuAI · Pull Request #5650 · feast-dev/feast

HaoXuAI · 2025-10-05T21:47:54Z

What this PR does / why we need it:

examples:

  from feast.table_format import IcebergFormat
  from feast.infra.offline_stores.contrib.spark_offline_store.spark_source import SparkSource

  # Create Iceberg format with snapshot option
  iceberg_format = IcebergFormat()
  iceberg_format.set_property("snapshot-id", "your_snapshot_id")

  spark_source = SparkSource(
      name="iceberg_features",
      path="my_catalog.my_database.my_table",  # Catalog table name
      table_format=iceberg_format
  )

  Generated Spark code:
  spark.read.format("iceberg").option("snapshot-id", "your_snapshot_id").load("my_catalog.my_database.my_table")

  ✅ Delta Example:

  from feast.table_format import DeltaFormat

  delta_format = DeltaFormat()
  delta_format.set_property("versionAsOf", "1")

  spark_source = SparkSource(
      name="delta_features",
      path="s3://bucket/delta-table",
      table_format=delta_format
  )

  Generated Spark code:
  spark.read.format("delta").option("versionAsOf", "1").load("s3://bucket/delta-table")

  ✅ Hudi Example:

  from feast.table_format import HudiFormat

  hudi_format = HudiFormat()
  hudi_format.set_property("hoodie.datasource.query.type", "snapshot")
  hudi_format.set_property("as.of.instant", "20231010120000")

  spark_source = SparkSource(
      name="hudi_features",
      path="s3://bucket/hudi-table",
      table_format=hudi_format
  )

  Generated Spark code:
  spark.read.format("hudi")\
    .option("hoodie.datasource.query.type", "snapshot")\
    .option("as.of.instant", "20231010120000")\
    .load("s3://bucket/hudi-table")

Which issue(s) this PR fixes:

Misc

Signed-off-by: HaoXuAI <sduxuhao@gmail.com>

HaoXuAI · 2025-10-05T22:29:38Z

protos/feast/core/DataSource.proto

    string date_partition_column_format = 5;
+
+    // Table Format (e.g. iceberg, delta, etc)
+    string table_format = 6;


TODO, create TableFormat proto, consolidate with FileFormat proto

tokoko · 2025-10-06T09:58:50Z

+1 on the inclusion of all 3 formats. Still I think we might be able to better design data-source side such that data source definitions don't tie the sources to specific offline stores. For example right now FileSource already supports specifying delta as a format... I don't like that design either because delta and especially iceberg might require more configuration that plain files, but the upside in that design was that Source class wasn't tied to a single offline store and it is actually usable from both dask and duckdb offline stores. Hiding formats behind SparkSource will mean that when a user stores a data source instance in the registry only spark offline store can be used to retrieve the data.

I think we can have best of both worlds if we instead go for adding all these formats as separate independent data sources (DeltaSource, IcebergSource, HudiSource) and then simply teach spark engine (and in the future others) how to read it.

franciscojavierarceo · 2025-10-06T12:21:05Z

sdk/python/feast/infra/offline_stores/contrib/spark_offline_store/spark_source.py

            query: The query to be executed in Spark.
            path: The path to file data.
-            file_format: The format of the file data.
+            file_format: The underlying file format (parquet, avro, csv, json).


why not consolidate now?

franciscojavierarceo · 2025-10-06T12:22:28Z

I think we can have best of both worlds if we instead go for adding all these formats as separate independent data sources (DeltaSource, IcebergSource, HudiSource) and then simply teach spark engine (and in the future others) how to read it.

+1

HaoXuAI · 2025-10-06T22:58:09Z

@franciscojavierarceo @tokoko consolidation with FilleFormat and new data sources could break the backward compatibility, so I want to do it pace by pace.

franciscojavierarceo · 2025-10-07T00:02:09Z

That makes sense

tokoko · 2025-10-07T08:46:29Z

@HaoXuAI Why would new data sources break backwards compatibility though?

HaoXuAI · 2025-10-09T05:01:50Z

@HaoXuAI Why would new data sources break backwards compatibility though?

There will be some proto changes, no 100% sure if there will be API changes exposed to users but I think might be the case

Signed-off-by: HaoXuAI <sduxuhao@gmail.com>

HaoXuAI · 2025-10-10T05:11:42Z

@franciscojavierarceo @ntkathole mind take a look

franciscojavierarceo

@HaoXuAI i don't see use actually using or testing Spark Table, Iceberg, or Hudi format's outside of our definitions, can you add that?

Can you also add documentation that these formats are now supported?

Otherwise lgtm.

HaoXuAI · 2025-10-14T21:20:25Z

@HaoXuAI i don't see use actually using or testing Spark Table, Iceberg, or Hudi format's outside of our definitions, can you add that?

Can you also add documentation that these formats are now supported?

Otherwise lgtm.

HaoXuAI · 2025-10-14T21:21:36Z

@HaoXuAI i don't see use actually using or testing Spark Table, Iceberg, or Hudi format's outside of our definitions, can you add that?
Can you also add documentation that these formats are now supported?
Otherwise lgtm.

Gonna update to add the TableFormat proto in the next PR, after that I'll add the docs. And I think the test will need to be changed as well.

Signed-off-by: hao-xu5 <hxu44@apple.com>

HaoXuAI · 2025-11-06T01:49:49Z

@franciscojavierarceo mind take another look?

franciscojavierarceo

Lgtm

* add support for table format such as Iceberg, Delta, Hudi etc. Signed-off-by: HaoXuAI <sduxuhao@gmail.com> * linting Signed-off-by: HaoXuAI <sduxuhao@gmail.com> * linting Signed-off-by: HaoXuAI <sduxuhao@gmail.com> * add tests Signed-off-by: HaoXuAI <sduxuhao@gmail.com> * fix tests Signed-off-by: HaoXuAI <sduxuhao@gmail.com> * fix tests Signed-off-by: HaoXuAI <sduxuhao@gmail.com> * linting Signed-off-by: HaoXuAI <sduxuhao@gmail.com> * add tableformat proto Signed-off-by: hao-xu5 <hxu44@apple.com> * update Signed-off-by: hao-xu5 <hxu44@apple.com> * update doc Signed-off-by: hao-xu5 <hxu44@apple.com> * fix linting Signed-off-by: hao-xu5 <hxu44@apple.com> * fix test Signed-off-by: hao-xu5 <hxu44@apple.com> --------- Signed-off-by: HaoXuAI <sduxuhao@gmail.com> Signed-off-by: hao-xu5 <hxu44@apple.com> Co-authored-by: hao-xu5 <hxu44@apple.com>

# [0.57.0](v0.56.0...v0.57.0) (2025-11-13) ### Bug Fixes * Improve trino to feast type mapping with (real,varchar,timestamp,decimal) ([#5691](#5691)) ([f855ad2](f855ad2)) * Materialize API - ODFV views not looked-up (thinks views non existant) - crashes materialize ([#5716](#5716)) ([1b050b3](1b050b3)) * Support historical feature retrieval with start_date/end_date in RemoteOfflineStore ([#5703](#5703)) ([ad32756](ad32756)) * Thread safe Clickhouse offline store ([#5710](#5710)) ([5f446ed](5f446ed)) ### Features * Add annotations to cronjob CRDs ([#5701](#5701)) ([be6e6c2](be6e6c2)) * Add batch commit mode for MySQL OnlineStore ([#5699](#5699)) ([3cfe4eb](3cfe4eb)) * Add possibility to materialize only latest values, to increase performance ([#5713](#5713)) ([8d77b72](8d77b72)) * Support table format: Iceberg, Delta, and Hudi ([#5650](#5650)) ([2915ad1](2915ad1))

HaoXuAI added 3 commits October 5, 2025 14:42

add support for table format such as Iceberg, Delta, Hudi etc.

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Signed-off-by: HaoXuAI <sduxuhao@gmail.com>

linting

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linting

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HaoXuAI requested a review from a team as a code owner October 5, 2025 21:47

HaoXuAI changed the title ~~feat: Support table format~~ feat: Support table format: Iceberg, Delta, and Hudi Oct 5, 2025

HaoXuAI added the ok-to-test label Oct 5, 2025

HaoXuAI added 2 commits October 5, 2025 15:08

add tests

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Signed-off-by: HaoXuAI <sduxuhao@gmail.com>

fix tests

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HaoXuAI commented Oct 5, 2025

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HaoXuAI requested review from franciscojavierarceo and ntkathole October 5, 2025 22:34

franciscojavierarceo reviewed Oct 6, 2025

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HaoXuAI added 3 commits October 8, 2025 23:01

fix tests

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Signed-off-by: HaoXuAI <sduxuhao@gmail.com>

Merge branch 'master' into support-table-format

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linting

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HaoXuAI requested a review from franciscojavierarceo October 10, 2025 04:47

Merge branch 'master' into support-table-format

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HaoXuAI closed this Oct 14, 2025

HaoXuAI reopened this Oct 14, 2025

Merge branch 'master' into support-table-format

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HaoXuAI and others added 7 commits October 29, 2025 21:36

Merge branch 'master' into support-table-format

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add tableformat proto

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Signed-off-by: hao-xu5 <hxu44@apple.com>

update

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update doc

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Merge branch 'master' into support-table-format

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fix test

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franciscojavierarceo approved these changes Nov 6, 2025

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HaoXuAI merged commit 2915ad1 into master Nov 6, 2025
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franciscojavierarceo mentioned this pull request Jan 14, 2026

Add blog post on new transformation framework #5856

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What this PR does / why we need it:

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