Upgrade polars 0.48.1 → 0.54.4#41
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- drop removed 'streaming' feature (engine stabilized upstream) - bump MSRV to 1.88 (polars 0.54 deps simd-json/sysinfo require it) - DataFrame::get_columns() -> columns() - DataFrame::get_column_names_str() -> get_column_names() - AnyValue::Decimal gained a field: (value, scale) -> (value, precision, scale) - DataFrame::new(cols) -> DataFrame::new(height, cols) (tests)
This was referenced Jun 23, 2026
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Upgrade polars 0.48.1 → 0.54.4
Bumps
polarsfrom0.48.1to0.54.4and adapts to its breaking API changes.Motivation
The public
DataframeOperatortrait returnspolars::prelude::DataFrame, so the pinned polars version is part of this crate's public API: downstream implementors are transitively locked to polars 0.48 and can't upgrade their own polars without aDataFrametype mismatch (Cargo otherwise compiles two polars versions side by side). This unblocks them and picks up the stabilized streaming engine and improved cloud Parquet pushdown.Changes
Dependencies
polars0.48.1→0.54.4; drop the removedstreamingfeature (engine is now always on).simd-json/sysinfounder polars 0.54).rust-toolchain.tomlbumped accordingly.API migration
DataFrame::get_columns()→DataFrame::columns()(postgres_operator_impl.rs,cdc_operator.rs).DataFrame::get_column_names_str()→DataFrame::get_column_names(), collected toVec<String>to keep the existingretain/joinlogic (postgres_operator_impl.rs).AnyValue::Decimalis now(value, precision, scale); the scale used to buildrust_decimal::Decimalmoved from the 2nd to the 3rd field. Updated the match toDecimal(value, _precision, scale)so numeric output is unchanged (postgres_row_struct.rs).DataFrame::new(cols)→DataFrame::new(height, cols)in unit tests.Verification
cargo check --workspace --all-targetsis clean on the new version. The DB-backed integration tests require the docker-compose Postgres/MinIO fixtures and were not run in this environment.Compatibility
Breaking for consumers: the public
DataFrametype changes major polars version and MSRV rises to 1.88. Recommend cutting this as a new minor (e.g.0.2.0).