13 releases (5 breaking)

new 0.22.3 Dec 4, 2024
0.22.2 Nov 30, 2024
0.21.0 Oct 28, 2024
0.18.1 Jun 24, 2024
0.17.1 Mar 7, 2024

#1873 in Database interfaces

Download history 62779/week @ 2024-08-17 57279/week @ 2024-08-24 48468/week @ 2024-08-31 19826/week @ 2024-09-07 3091/week @ 2024-09-14 3441/week @ 2024-09-21 4130/week @ 2024-09-28 19240/week @ 2024-10-05 40435/week @ 2024-10-12 15720/week @ 2024-10-19 14224/week @ 2024-10-26 12700/week @ 2024-11-02 13584/week @ 2024-11-09 15289/week @ 2024-11-16 10070/week @ 2024-11-23 14148/week @ 2024-11-30

55,631 downloads per month
Used in 19 crates (7 directly)

Apache-2.0

2MB
41K SLoC

Deltalake

crates.io api_doc

Native Delta Lake implementation in Rust

Usage

API

let table = deltalake::open_table("./tests/data/simple_table").await.unwrap();
println!("{}", table.get_files());

CLI

Navigate into the delta-inspect directory first and run the following command Please noted that the test data is under rust instead of delta-inspect

 cargo run --bin delta-inspect files ../rust/tests/data/delta-0.2.0
part-00000-cb6b150b-30b8-4662-ad28-ff32ddab96d2-c000.snappy.parquet
part-00000-7c2deba3-1994-4fb8-bc07-d46c948aa415-c000.snappy.parquet
part-00001-c373a5bd-85f0-4758-815e-7eb62007a15c-c000.snappy.parquet
 cargo run --bin delta-inspect info ./tests/data/delta-0.2.0
DeltaTable(./tests/data/delta-0.2.0)
        version: 3
        metadata: GUID=22ef18ba-191c-4c36-a606-3dad5cdf3830, name=None, description=None, partitionColumns=[], createdTime=1564524294376, configuration={}
        min_version: read=1, write=2
        files count: 3

Examples

The examples folder shows how to use Rust API to manipulate Delta tables.

Navigate into the rust directory first and examples can be run using the cargo run --example command. For example:

cargo run --example read_delta_table

Optional cargo package features

  • azure - enable the Azure storage backend to work with Delta Tables in Azure Data Lake Storage Gen2 accounts.
  • datafusion - enable the datafusion::datasource::TableProvider trait implementation for Delta Tables, allowing them to be queried using DataFusion.
  • datafusion-ext - DEPRECATED: alias for datafusion feature
  • gcs - enable the Google storage backend to work with Delta Tables in Google Cloud Storage.
  • json - enable the JSON feature of the parquet crate for better JSON interoperability.

Development

To run s3 integration tests from local machine, we use docker-compose to stand up AWS local stack. To spin up the test environment run docker-compose up in the root of the delta-rs repo.

Dependencies

~39–59MB
~1M SLoC