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rfsspec

Rust python FSs

Implements s3, gcs, azure blob and HTTP backends for fsspec using Rust.

Respects concurrency of many simultaneous requests as made by fsspec, but

  • does not need python asyncio,
  • releases the GIL,
  • can safely be called from multiple threads
  • is probably NOT fork-safe

Limitations

Currently only the methods cat_ranges, cat and cat_file are supported, enough to open a (consolidated) zarr dataset for reading.

Implementations

The http backend supports:

  • headers
  • method
  • ranges

The s3 implementation supports configuration by environment variables and .aws files, and options

  • profile
  • endpoint_url
  • anon
  • region
  • ranges
  • requester-pays

The GCS backend supports:

  • anon
  • ranges
  • requester-pays
  • assumes credentials via env variables and gcloud CLI

The Azure blob backend supports

  • anon
  • ranges
  • account/key auth (account always required)

Installation

> pip install -i https://pypi.anaconda.org/mdurant/simple rfsspec

Benchmarks

Latest results from examples/script.py:

Rust http: 0.1335
Rust s3: 0.1163
Rust anon s3: 0.0921
fsspec http: 0.1611
fsspec s3: 0.4758
fsspec anon s3: 0.4208

(multi-threaded benchmarks should be more meaningful)

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Rust python FS

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