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  1. Reference
  2. Offline stores

Trino (contrib)

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Last updated 2 years ago

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Description

The Trino offline store provides support for reading .

  • Entity dataframes can be provided as a SQL query or can be provided as a Pandas dataframe. A Pandas dataframes will be uploaded to Trino as a table in order to complete join operations.

Disclaimer

The Trino offline store does not achieve full test coverage. Please do not assume complete stability.

Example

feature_store.yaml
project: feature_repo
registry: data/registry.db
provider: local
offline_store:
    type: feast_trino.trino.TrinoOfflineStore
    host: localhost
    port: 8080
    catalog: memory
    connector:
        type: memory
online_store:
    path: data/online_store.db

Functionality Matrix

Trino

get_historical_features (point-in-time correct join)

yes

pull_latest_from_table_or_query (retrieve latest feature values)

yes

pull_all_from_table_or_query (retrieve a saved dataset)

yes

offline_write_batch (persist dataframes to offline store)

no

write_logged_features (persist logged features to offline store)

no

Below is a matrix indicating which functionality is supported by TrinoRetrievalJob.

Trino

export to dataframe

yes

export to arrow table

yes

export to arrow batches

no

export to SQL

yes

export to data lake (S3, GCS, etc.)

no

export to data warehouse

no

export as Spark dataframe

no

local execution of Python-based on-demand transforms

yes

remote execution of Python-based on-demand transforms

no

persist results in the offline store

no

preview the query plan before execution

yes

read partitioned data

yes

The full set of configuration options is available in .

The set of functionality supported by offline stores is described in detail . Below is a matrix indicating which functionality is supported by the Trino offline store.

To compare this set of functionality against other offline stores, please see the full .

TrinoSources
TrinoOfflineStoreConfig
here
functionality matrix