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GeezerVison is showing github.com — feat: Created DocEmbedder class by patelchaitany · Pull Request #5973 · feast-dev/feast

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@patelchaitany

@patelchaitany patelchaitany commented Feb 16, 2026 •
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What this PR does / why we need it:

This PR adds a Document Embedder capability to Feast, allowing users to go from raw documents to embeddings stored in the online vector store in a single step. It handles chunking, embedding generation, and writing the results to the online store — providing an end-to-end ingestion pipeline for RAG workflows within Feast.

What changed:

sdk/python/feast/chunker.py

Defines the document chunking layer. Provides:

  • A BaseChunker abstract class that users can extend with custom chunking strategies
  • A built-in TextChunker that splits plain text by word count with configurable size, overlap, and thresholds
  • A chunk_dataframe() convenience method to chunk all documents in a DataFrame

Currently only basic text chunking is implemented. There is room for improvement — future iterations can support more advanced strategies like semantic chunking, sentence-aware splitting, or format-specific chunkers (PDF, HTML, etc.).

sdk/python/feast/embedder.py

Defines the embedding generation layer. Provides:

  • A BaseEmbedder abstract class with a modality-routing registry for extensibility
  • A MultiModalEmbedder with built-in support for text (via sentence-transformers) and image (via CLIP) embeddings
  • Lazy model loading and configurable batch processing

sdk/python/feast/doc_embedder.py

The high-level orchestrator that coordinates chunking, embedding, and storage. Provides:

  • A DocEmbedder class that runs the full pipeline: chunk -> embed -> logical layer -> write to online store
  • A user-defined logical layer function to map output to the FeatureView schema
  • Auto-generation of a default FeatureView if the user does not define their own (controlled by create_feature_view). This is a basic implementation intended as a starting point

sdk/python/feast/init.py

Updated to export DocEmbedder, LogicalLayerFn, BaseChunker, TextChunker, ChunkingConfig, BaseEmbedder, MultiModalEmbedder, and EmbeddingConfig as part of Feast's public API.

Which issue(s) this PR fixes:

Create DocEmbedder class along with RAGRetriever #5426

Misc


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@patelchaitany
patelchaitany requested a review from a team as a code owner February 16, 2026 11:28
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@patelchaitany

patelchaitany commented Feb 16, 2026

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@ntkathole @jyejare can You pls review this PR and let me know if any changes is needed.

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@patelchaitany patelchaitany changed the title feat: Created DocEmbedder class #5972 feat: Created DocEmbedder class Feb 16, 2026
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jyejare
jyejare reviewed Feb 23, 2026
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Great Addition @patelchaitany , this is a milestone for Feast in RAG. Glad to see multiple types of data are being supported by Embedder.

Few comments and we should be good to go.

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@ntkathole
ntkathole force-pushed the fet-DocEmbedder branch from 1ef9d8e to 083eadb Compare March 2, 2026 05:15
@ntkathole ntkathole added the ok-to-test label Mar 2, 2026
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ntkathole force-pushed the fet-DocEmbedder branch from 083eadb to bb74079 Compare March 2, 2026 07:52
@ntkathole

ntkathole commented Mar 2, 2026

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@patelchaitany filename typo - examples/rag-retriever/rag_feast_docebedder.ipynb should be rag_feast_docembedder.ipynb

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@ntkathole ntkathole removed the ok-to-test label Mar 2, 2026
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patelchaitany force-pushed the fet-DocEmbedder branch 2 times, most recently from e00ee22 to ee663f5 Compare March 5, 2026 06:31
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@patelchaitany
- Introduced DocEmbedder class for embedding documents and transformi…
85ee6e2
…ng them into the FeatureView schema.

- Added BaseChunker and TextChunker classes for document chunking.
- Updated pyproject.toml to include sentence-transformers dependency.
- Created a new Jupyter notebook example for using the RAG retriever with document embedding.

Signed-off-by: Chaitany patel <[email protected]>
@patelchaitany
patelchaitany force-pushed the fet-DocEmbedder branch from 510c54a to 85ee6e2 Compare March 9, 2026 12:35
@patelchaitany @ntkathole
- Introduced DocEmbedder class for embedding documents and transformi…
2c66417
…ng them into the FeatureView schema.

- Added BaseChunker and TextChunker classes for document chunking.
- Updated pyproject.toml to include sentence-transformers dependency.
- Created a new Jupyter notebook example for using the RAG retriever with document embedding.

Signed-off-by: Chaitany patel <[email protected]>
@ntkathole
ntkathole force-pushed the fet-DocEmbedder branch from 85ee6e2 to 2c66417 Compare March 11, 2026 04:48
@patelchaitany
Merge branch 'fet-DocEmbedder' of https://github.com/patelchaitany/feast
7562dd0
 into fet-DocEmbedder
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patelchaitany force-pushed the fet-DocEmbedder branch from 720f0ce to 7562dd0 Compare March 11, 2026 05:28
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@patelchaitany
Merge branch 'master' into fet-DocEmbedder
f4439cc
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patelchaitany added 2 commits March 11, 2026 11:48
@patelchaitany
Merge branch 'fet-DocEmbedder' of https://github.com/patelchaitany/feast
d455968
 into fet-DocEmbedder
@patelchaitany
Merge branch 'fet-DocEmbedder' of https://github.com/patelchaitany/feast
b4545aa
 into fet-DocEmbedder
@ntkathole ntkathole added the ok-to-test label Mar 14, 2026
patelchaitany added 2 commits March 16, 2026 15:30
@patelchaitany
Merge remote-tracking branch 'origin/master' into fet-DocEmbedder
9fc01a8
@patelchaitany
resolving the merge conflict
30dddd7
Signed-off-by: Chaitany patel <[email protected]>
@patelchaitany
patelchaitany force-pushed the fet-DocEmbedder branch from 523bdfb to 30dddd7 Compare March 16, 2026 11:18
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Devin Review found 1 new potential issue.

View 23 additional findings in Devin Review.

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ntkathole
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lgtm

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@ntkathole
ntkathole merged commit 0719c06 into feast-dev:master Mar 16, 2026
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franciscojavierarceo
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Comment thread sdk/python/feast/doc_embedder.py


@runtime_checkable
class LogicalLayerFn(Protocol):

@franciscojavierarceo franciscojavierarceo Mar 16, 2026

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Probably we should rename this as it's not particularly intuitive IMO

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@patelchaitany patelchaitany Mar 17, 2026

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So i have two name in the mind - SchemaMapperFn or the FeatureViewMapperFn i think this two name are more intuitive if you have particular name in mind then let me know.

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Anarion-zuo pushed a commit to Anarion-zuo/feast that referenced this pull request Mar 17, 2026
@patelchaitany @Anarion-zuo
feat: Created DocEmbedder class (feast-dev#5973)
7b5740e
* - Introduced DocEmbedder class for embedding documents and transforming them into the FeatureView schema.
- Added BaseChunker and TextChunker classes for document chunking.
- Updated pyproject.toml to include sentence-transformers dependency.
- Created a new Jupyter notebook example for using the RAG retriever with document embedding.

Signed-off-by: Chaitany patel <[email protected]>

* - Introduced DocEmbedder class for embedding documents and transforming them into the FeatureView schema.
- Added BaseChunker and TextChunker classes for document chunking.
- Updated pyproject.toml to include sentence-transformers dependency.
- Created a new Jupyter notebook example for using the RAG retriever with document embedding.

Signed-off-by: Chaitany patel <[email protected]>

* resolving the merge conflict

Signed-off-by: Chaitany patel <[email protected]>

---------

Signed-off-by: Chaitany patel <[email protected]>
Signed-off-by: aaronzuo <[email protected]>
Shizoqua pushed a commit to Shizoqua/feast that referenced this pull request Mar 18, 2026
@patelchaitany Shizoqua
feat: Created DocEmbedder class (feast-dev#5973)
8e6327c
* - Introduced DocEmbedder class for embedding documents and transforming them into the FeatureView schema.
- Added BaseChunker and TextChunker classes for document chunking.
- Updated pyproject.toml to include sentence-transformers dependency.
- Created a new Jupyter notebook example for using the RAG retriever with document embedding.

Signed-off-by: Chaitany patel <[email protected]>

* - Introduced DocEmbedder class for embedding documents and transforming them into the FeatureView schema.
- Added BaseChunker and TextChunker classes for document chunking.
- Updated pyproject.toml to include sentence-transformers dependency.
- Created a new Jupyter notebook example for using the RAG retriever with document embedding.

Signed-off-by: Chaitany patel <[email protected]>

* resolving the merge conflict

Signed-off-by: Chaitany patel <[email protected]>

---------

Signed-off-by: Chaitany patel <[email protected]>
Signed-off-by: Shizoqua <[email protected]>
aniketpalu pushed a commit to aniketpalu/feast that referenced this pull request Mar 23, 2026
@patelchaitany @aniketpalu
feat: Created DocEmbedder class (feast-dev#5973)
865e82f
* - Introduced DocEmbedder class for embedding documents and transforming them into the FeatureView schema.
- Added BaseChunker and TextChunker classes for document chunking.
- Updated pyproject.toml to include sentence-transformers dependency.
- Created a new Jupyter notebook example for using the RAG retriever with document embedding.

Signed-off-by: Chaitany patel <[email protected]>

* - Introduced DocEmbedder class for embedding documents and transforming them into the FeatureView schema.
- Added BaseChunker and TextChunker classes for document chunking.
- Updated pyproject.toml to include sentence-transformers dependency.
- Created a new Jupyter notebook example for using the RAG retriever with document embedding.

Signed-off-by: Chaitany patel <[email protected]>

* resolving the merge conflict

Signed-off-by: Chaitany patel <[email protected]>

---------

Signed-off-by: Chaitany patel <[email protected]>
Signed-off-by: Aniket Paluskar <[email protected]>
@patelchaitany patelchaitany mentioned this pull request Mar 31, 2026
docs: Add DocEmbedder documentation for PR #5973 #6201
Merged
3 tasks
yuan1j pushed a commit to yuan1j/feast that referenced this pull request Apr 2, 2026
@patelchaitany @yuan1j
feat: Created DocEmbedder class (feast-dev#5973)
bc97642
* - Introduced DocEmbedder class for embedding documents and transforming them into the FeatureView schema.
- Added BaseChunker and TextChunker classes for document chunking.
- Updated pyproject.toml to include sentence-transformers dependency.
- Created a new Jupyter notebook example for using the RAG retriever with document embedding.

Signed-off-by: Chaitany patel <[email protected]>

* - Introduced DocEmbedder class for embedding documents and transforming them into the FeatureView schema.
- Added BaseChunker and TextChunker classes for document chunking.
- Updated pyproject.toml to include sentence-transformers dependency.
- Created a new Jupyter notebook example for using the RAG retriever with document embedding.

Signed-off-by: Chaitany patel <[email protected]>

* resolving the merge conflict

Signed-off-by: Chaitany patel <[email protected]>

---------

Signed-off-by: Chaitany patel <[email protected]>
Signed-off-by: yuanjun220 <[email protected]>
franciscojavierarceo pushed a commit that referenced this pull request Apr 7, 2026
@feast-ci-bot
chore(release): release 0.61.0
b374396
# [0.61.0](v0.60.0...v0.61.0) (2026-04-07)

### Bug Fixes

* Add grpcio dependency group to transformation server Dockerfile ([2c2150a](2c2150a))
* Add https readiness check for rest-registry tests ([ea85e63](ea85e63))
* Add website build check for PRs and fix blog frontmatter YAML error ([#6079](#6079)) ([30a3a43](30a3a43))
* Added missing jackc/pgx/v5 entries ([94ad0e7](94ad0e7))
* Added MLflow metric charts across feature selection ([#6080](#6080)) ([a403361](a403361))
* Check duplicate names for feature view across types ([#5999](#5999)) ([95b9af8](95b9af8))
* Fix integration tests ([#6046](#6046)) ([02d5548](02d5548))
* Fix missing error handling for resource_counts endpoint ([d9706ce](d9706ce))
* Fix non-specific label selector on metrics service ([a1a160d](a1a160d))
* fix path feature_definitions.py ([7d7df68](7d7df68))
* Fix regstry Rest API tests intermittent failure ([d53a339](d53a339))
* Fixed IntegrityError on SqlRegistry ([#6047](#6047)) ([325e148](325e148))
* Fixed intermittent failures in get_historical_features ([c335ec7](c335ec7))
* Fixed pre-commit check ([114b7db](114b7db))
* Fixed the intermittent FeatureViewNotFoundException ([661ecc7](661ecc7))
* Fixed uv cache permission error for docker build on mac ([ad807be](ad807be))
* Fixes a `PydanticDeprecatedSince20` warning for trino_offline_store ([#5991](#5991)) ([abfd18a](abfd18a))
* Handle existing RBAC role gracefully in namespace registry ([b46a62b](b46a62b))
* Ignore ipynb files during apply ([#6151](#6151)) ([4ea123d](4ea123d))
* Integration test failures ([#6040](#6040)) ([9165870](9165870))
* Mount TLS volumes for init container ([080a9b5](080a9b5))
* **postgres:** Use end_date in synthetic entity_df for non-entity retrieval ([#6110](#6110)) ([088a802](088a802)), closes [#6066](#6066)
* Ray offline store tests are duplicated across 3 workflows ([54f705a](54f705a))
* Reenable tests ([#6036](#6036)) ([82ee7f8](82ee7f8))
* SSL/TLS mode by default for postgres connection ([4844488](4844488))
* Use commitlint pre-commit hook instead of a separate action ([35a81e7](35a81e7))

### Features

* Add Claude Code agent skills for Feast ([#6081](#6081)) ([1e5b60f](1e5b60f)), closes [#5976](#5976) [#6007](#6007)
* Add complex type support (Map, JSON, Struct) with schema validation ([#5974](#5974)) ([1200dbf](1200dbf))
* Add decimal to supported feature types ([#6029](#6029)) ([#6226](#6226)) ([cff6fbf](cff6fbf))
* Add feast apply init container to automate registry population on pod start ([#6106](#6106)) ([6b31a43](6b31a43))
* Add feature view versioning support to PostgreSQL and MySQL online stores ([#6193](#6193)) ([940e0f0](940e0f0)), closes [#6168](#6168) [#6169](#6169) [#2728](#2728)
* Add materialization, feature freshness, request latency, and push metrics to feature server ([2c6be18](2c6be18))
* Add metadata statistics to registry api ([ef1d4fc](ef1d4fc))
* Add non-entity retrieval support for ClickHouse offline store ([4d08ddc](4d08ddc)), closes [#5835](#5835)
* Add OnlineStore for MongoDB ([#6025](#6025)) ([bf4e3fa](bf4e3fa)), closes [golang/go#74462](golang/go#74462)
* Add Oracle DB as Offline store in python sdk & operator ([#6017](#6017)) ([9d35368](9d35368))
* Add RBAC aggregation labels to FeatureStore ClusterRoles ([daf77c6](daf77c6))
* Add ServiceMonitor auto-generation for Prometheus discovery ([#6126](#6126)) ([56e6d21](56e6d21))
* Add typed_features field to grpc write request (([#6117](#6117)) ([#6118](#6118)) ([eeaa6db](eeaa6db)), closes [#6116](#6116)
* Add UUID and TIME_UUID as feature types ([#5885](#5885)) ([#5951](#5951)) ([5d6e311](5d6e311))
* Add version indicators to lineage graph nodes ([#6187](#6187)) ([73805d3](73805d3))
* Add version tracking to FeatureView ([#6101](#6101)) ([ed4a4f2](ed4a4f2))
* Added Agent skills for AI Agents ([#6007](#6007)) ([99008c8](99008c8))
* Added CodeQL SAST scanning and detect-secrets pre-commit hook ([547b516](547b516))
* Added odfv transformations metrics ([8b5a526](8b5a526))
* Adding optional name to Aggregation (feast-dev[#5994](#5994)) ([#6083](#6083)) ([56469f7](56469f7))
* Created DocEmbedder class ([#5973](#5973)) ([0719c06](0719c06))
* Extended OIDC support to extract groups & namespaces and token injection with multiple methods ([#6089](#6089)) ([7c04026](7c04026))
* Feature Server High-Availability on Kubernetes ([#6028](#6028)) ([9c07b4c](9c07b4c)), closes [Hi#Availability](https://github.com/Hi/issues/Availability) [Hi#Availability](https://github.com/Hi/issues/Availability)
* **go:** Implement metrics and tracing for http and grpc servers ([#5925](#5925)) ([2b4ec9a](2b4ec9a))
* Horizontal scaling support to the Feast operator ([#6000](#6000)) ([3ec13e6](3ec13e6))
* Making feature view source optional (feast-dev[#6074](#6074)) ([#6075](#6075)) ([76917b7](76917b7))
* Replace ORJSONResponse with Pydantic response models for faster JSON serialization ([65cf03c](65cf03c))
* Support arm docker build ([#6061](#6061)) ([1e1f5d9](1e1f5d9))
* Support distinct count aggregation [[#6116](#6116)] ([3639570](3639570))
* Support HTTP in MCP ([#6109](#6109)) ([e72b983](e72b983))
* Support nested collection types (Array/Set of Array/Set) ([#5947](#5947)) ([#6132](#6132)) ([ab61642](ab61642))
* Support podAnnotations on Deployment pod template ([1b3cdc1](1b3cdc1))
* Use orjson for faster JSON serialization in feature server ([6f5203a](6f5203a))
* Utilize date partition column in BigQuery ([#6076](#6076)) ([4ea9b32](4ea9b32))

### Performance Improvements

* Online feature response construction in a single pass over read rows ([113fb04](113fb04))
* Optimize protobuf parsing in Redis online store ([#6023](#6023)) ([59dfdb8](59dfdb8))
* Optimize timestamp conversion in _convert_rows_to_protobuf ([33a2e95](33a2e95))
* Parallelize DynamoDB batch reads in sync online_read ([#6024](#6024)) ([9699944](9699944))
* Remove redundant entity key serialization in online_read ([d87283f](d87283f))
franciscojavierarceo pushed a commit that referenced this pull request Apr 8, 2026
@feast-ci-bot
chore(release): release 0.62.0
beaa9a6
# [0.62.0](v0.61.0...v0.62.0) (2026-04-08)

### Bug Fixes

* Added missing jackc/pgx/v5 entries ([94ad0e7](94ad0e7))
* Fix missing error handling for resource_counts endpoint ([d9706ce](d9706ce))
* fix path feature_definitions.py ([7d7df68](7d7df68))
* Fix regstry Rest API tests intermittent failure ([d53a339](d53a339))
* Fixed intermittent failures in get_historical_features ([c335ec7](c335ec7))
* Fixed the intermittent FeatureViewNotFoundException ([661ecc7](661ecc7))
* Handle existing RBAC role gracefully in namespace registry ([b46a62b](b46a62b))
* Ignore ipynb files during apply ([#6151](#6151)) ([4ea123d](4ea123d))
* Mount TLS volumes for init container ([080a9b5](080a9b5))
* **postgres:** Use end_date in synthetic entity_df for non-entity retrieval ([#6110](#6110)) ([088a802](088a802)), closes [#6066](#6066)
* SSL/TLS mode by default for postgres connection ([4844488](4844488))
* Sync v0.61-branch so v0.61.0 tag is reachable from master ([af66878](af66878))

### Features

* Add Claude Code agent skills for Feast ([#6081](#6081)) ([1e5b60f](1e5b60f)), closes [#5976](#5976) [#6007](#6007)
* Add decimal to supported feature types ([#6029](#6029)) ([#6226](#6226)) ([cff6fbf](cff6fbf))
* Add feast apply init container to automate registry population on pod start ([#6106](#6106)) ([6b31a43](6b31a43))
* Add feature view versioning support to PostgreSQL and MySQL online stores ([#6193](#6193)) ([940e0f0](940e0f0)), closes [#6168](#6168) [#6169](#6169) [#2728](#2728)
* Add metadata statistics to registry api ([ef1d4fc](ef1d4fc))
* Add Oracle DB as Offline store in python sdk & operator ([#6017](#6017)) ([9d35368](9d35368))
* Add RBAC aggregation labels to FeatureStore ClusterRoles ([daf77c6](daf77c6))
* Add ServiceMonitor auto-generation for Prometheus discovery ([#6126](#6126)) ([56e6d21](56e6d21))
* Add typed_features field to grpc write request (([#6117](#6117)) ([#6118](#6118)) ([eeaa6db](eeaa6db)), closes [#6116](#6116)
* Add UUID and TIME_UUID as feature types ([#5885](#5885)) ([#5951](#5951)) ([5d6e311](5d6e311))
* Add version indicators to lineage graph nodes ([#6187](#6187)) ([73805d3](73805d3))
* Add version tracking to FeatureView ([#6101](#6101)) ([ed4a4f2](ed4a4f2))
* Added Agent skills for AI Agents ([#6007](#6007)) ([99008c8](99008c8))
* Added odfv transformations metrics ([8b5a526](8b5a526))
* Created DocEmbedder class ([#5973](#5973)) ([0719c06](0719c06))
* Extended OIDC support to extract groups & namespaces and token injection with multiple methods ([#6089](#6089)) ([7c04026](7c04026))
* Replace ORJSONResponse with Pydantic response models for faster JSON serialization ([65cf03c](65cf03c))
* Support distinct count aggregation [[#6116](#6116)] ([3639570](3639570))
* Support HTTP in MCP ([#6109](#6109)) ([e72b983](e72b983))
* Support nested collection types (Array/Set of Array/Set) ([#5947](#5947)) ([#6132](#6132)) ([ab61642](ab61642))
* Support podAnnotations on Deployment pod template ([1b3cdc1](1b3cdc1))
* Utilize date partition column in BigQuery ([#6076](#6076)) ([4ea9b32](4ea9b32))

### Performance Improvements

* Online feature response construction in a single pass over read rows ([113fb04](113fb04))
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Reviewers

@franciscojavierarceo franciscojavierarceo franciscojavierarceo left review comments
@devin-ai-integration devin-ai-integration[bot] devin-ai-integration[bot] left review comments
@jyejare jyejare jyejare approved these changes
@ntkathole ntkathole ntkathole approved these changes

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@patelchaitany @ntkathole @franciscojavierarceo @jyejare
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