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pinning chrono in v0.53 breaks dependency chain

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

rustRelated to Rust PolarsRelated to Rust Polars

Status: Open.

#26694 In pola-rs/polars;

· keltia opened on Feb 24, 2026

Projection not pushed down past join

A-optimizerArea: plan optimizationArea: plan optimization

acceptedReady for implementationReady for implementation

performancePerformance issues or improvementsPerformance issues or improvements

Status: Open.

#26693 In pola-rs/polars;

· JakubValtar opened on Feb 24, 2026

<code>qcut</code> applied after <code>rank().over()</code> doesn't correctly respect group boundaries when computing quantile cut points

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#26689 In pola-rs/polars;

· almostintuitive opened on Feb 24, 2026

Allow a shorthand form for computing the length of a <code>LazyFrame</code>.

enhancementNew feature or an improvement of an existing featureNew feature or an improvement of an existing feature

Status: Open.

#26687 In pola-rs/polars;

· ramcasa opened on Feb 24, 2026

feat: add Polars SQL to context7

A-sqlArea: Polars SQL functionalityArea: Polars SQL functionality

enhancementNew feature or an improvement of an existing featureNew feature or an improvement of an existing feature

Status: Open.

#26683 In pola-rs/polars;

· jqnatividad opened on Feb 24, 2026

<code>approximate_bytes_per_file</code> in <code>PartitionBy</code> is ignored unless <code>row_group_size</code> is small enough

Status: Open.

#26682 In pola-rs/polars;

· ndgigliotti opened on Feb 24, 2026

<code>sort_by(nulls_last=True)</code> silently ignored in <code>group_by().agg()</code> when combined with <code>map_batches</code>

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#26680 In pola-rs/polars;

· gautamvarmadatla opened on Feb 23, 2026

Extremely high memory usage with scan_parquet on parquet files with large columns

A-io-parquetArea: reading/writing Parquet filesArea: reading/writing Parquet files

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#26679 In pola-rs/polars;

· abgros opened on Feb 23, 2026

LazyFrame.join() documentation for <code>validate=</code> parameter seems inaccurate

documentationImprovements or additions to documentationImprovements or additions to documentation

Status: Open.

#26678 In pola-rs/polars;

· itamarst opened on Feb 23, 2026

Performance regression in CSV <code>pl.select(pl.len())</code> using streaming engine

A-io-csvArea: reading/writing CSV filesArea: reading/writing CSV files

A-streamingRelated to the streaming engineRelated to the streaming engine

acceptedReady for implementationReady for implementation

bugSomething isn't workingSomething isn't working

P-mediumPriority: mediumPriority: medium

performancePerformance issues or improvementsPerformance issues or improvements

pythonRelated to Python PolarsRelated to Python Polars

regressionIssue introduced by a new releaseIssue introduced by a new release

Status: Open.

#26675 In pola-rs/polars;

· kdn36 opened on Feb 23, 2026

<code>map_groups</code> errors when <code>group_by</code> is passed a list

bugSomething isn't workingSomething isn't working

needs triageAwaiting prioritization by a maintainerAwaiting prioritization by a maintainer

pythonRelated to Python PolarsRelated to Python Polars

Status: Open.

#26672 In pola-rs/polars;

· bicarlsen opened on Feb 23, 2026

Support newly-added Apache Arrow functionality in Oracle SQL connections

A-sqlArea: Polars SQL functionalityArea: Polars SQL functionality

enhancementNew feature or an improvement of an existing featureNew feature or an improvement of an existing feature

Status: Open.

#26664 In pola-rs/polars;

· JaredSchwartz opened on Feb 23, 2026