Lib.rs

Cargo Features

polars-parquet has no features set by default.

[dependencies]
polars-parquet = { version = "0.39.2", features = ["compression", "snappy", "gzip", "gzip_zlib_ng", "async", "bloom_filter", "serde_types", "fallible-streaming-iterator"] }

compression = brotli, gzip, lz4, snappy, zstd

snappy compression? = snap

compression backends

gzip compression?

Enables rust_backend of flate2

gzip_zlib_ng

Enables zlib-ng of flate2

async = async-stream, futures

Enables async of parquet-format-safe

Affects read::read_metadata_async, column_chunk::write_column_chunk_async, write::write_column_index_async, write::write_offset_index_async, page::write_page_async, row_group::write_row_group_async…

bloom_filter = xxhash-rust

Affects parquet::bloom_filter…

serde_types = serde

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

fallible-streaming-iterator implicit feature

Enables fallible-streaming-iterator

fallible-streaming-iterator:

Fallible streaming iteration

futures async?

async-stream async?

brotli compression?

Enables brotli ^3.3

flate2 gzip? gzip_zlib_ng?

lz4 compression?

serde serde_types?

snap snappy?

zstd compression?

xxhash-rust bloom_filter?