Problemsby IbisTrouble with Polars read
Data engineering4 posts from 3 people4d active+22 posts in the last 7 days, 0 the 7 days before (rising)
Posts per day
The posts behind it
4, newest first`read_ipc` panics (`cast_slice>TargetAlignmentGreaterAndInputNotAligned`) on a compressed IPC file whose Decimal128 buffer is stored uncompressed (length -1)### Checks - [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the [latest version](https://pypi.org/project/polars/) of Polars. ### Reproducible example The file below is the output of `clickhouse local -q "SELECT...pola-rs/polars · hanke580Open ↗Hive partition value `k=` of a Categorical/Enum key is read back as null instead of "" (String keys were fixed in #24546)### Checks - [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the [latest version](https://pypi.org/project/polars/) of Polars. ### Reproducible example Output: ### Log output ### Issue description The writer keeps `""`...pola-rs/polars · hanke5801 reactionsOpen ↗`read_database` raises `ImportError` with SQLAlchemy 2.1 when `greenlet` is not installed### Checks - [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the [latest version](https://pypi.org/project/polars/) of Polars. ### Reproducible example ### Log output ### Issue description SQLAlchemy 2.1 moved...pola-rs/polars · kirangadhave1 reactionsOpen ↗Allow infer_schema_length=0 in read_json when schema is explicitly provided### Description When calling pl.read_json() with an explicit schema, setting infer_schema_length=0 currently results in a bug. Since the schema is already provided by the user, schema inference is unnecessary in this case. It would be useful if infer_schema_length=0 could be...pola-rs/polars · math-hiyoko1 reactionsOpen ↗
Companies and products named
About this problem
Evidence
4 posts from 3 people in 1 place, about 1 a week over 53 days. Mostly on pola-rs/polars. Tools named alongside: PyPI, GitHub, ClickHouse.
Frustration Frustration 0 of 3· Seen on GitHub issues
How it was grouped
Posts about Polars with no known issue, sharing the word "read". First post Aug 29, 2026, latest Oct 20, 2026. Corroborated: 3 or more posts from 2 or more people or places. Method
Other Polars problems
Trouble with Polars columnTrouble with Polars truePolars upgrades break working setupsPolars users keep filing bugsPolars error messages are crypticTrouble with Polars parquetTrouble with Polars streamingTrouble with Polars joinBad data slips through Polars unnoticedTrouble with Polars structPolars runs out of memoryTrouble with Polars datetime
History
Trouble with Polars read (4 posts)