Problemsby GlyphDuckDB
Open source project68 problems254 posts+0 this week
Problem posts per week
DuckDB problems
Models fail to return valid structured output
15 posts from 13 people on GitHub issues, Hacker News.
Apache Spark users keep filing bugs
Top post: "Is a broadcast variable shared across multiple concurrent Spark jobs?", one of 16 posts from 15 people on GitHub issues, Reddit, Stack Overflow.
Bad data slips into production unnoticed
21 posts from 21 people on GitHub issues, Reddit, Stack Overflow.
Trouble with Polars column
Top post: "Compare lists in one column to the first n elements of another column in Python Polars lazyframes, where n is", one of 20 posts from 16 people on GitHub issues, Stack Overflow.
Queries run too slowly and are hard to tune
5 posts from 5 people on GitHub issues, Stack Overflow.
DuckDB upgrades break working setups
37 posts from 28 people on GitHub issues.
dbt users keep filing bugs
Top post: "dbt deps randomly fails with 500 Internal Server Error from codeload.github.com", one of 34 posts from 20 people on GitHub issues, Reddit, Community forums.
DuckDB users keep filing bugs
Top post: "latest alpha DuckDB 2.0 with Quack server on Windows/Linux got `Authentication failed` since several days ago", one of 23 posts from 15 people on GitHub issues.
Polars upgrades break working setups
23 posts from 16 people on GitHub issues.
Trouble with DuckDB internal
Top post: "duckdb 2.0.0 fails to launch on BE: `INTERNAL Error: The time zone data is corrupt`", one of 14 posts from 7 people on GitHub issues.
Trouble with Apache Iceberg table
Top post: "Parquet files written with the default CRS are not compatible with Iceberg Java EPSG:4326 table", one of 12 posts from 8 people on GitHub issues.
Microsoft Fabric users keep asking for help
Top post: "SQL: support time-zone-aware timestamps (CAST AS TIMESTAMPTZ / TIMESTAMP WITH TIME ZONE, AT TIME ZONE)", one of 10 posts from 9 people on Reddit, GitHub issues.
Trouble with DuckDB returns
Top post: "Comparison simplification returns an incorrect result when a narrowing `DECIMAL` cast is used", one of 9 posts from 9 people on GitHub issues.
Trouble with DuckDB join
Top post: "Segfault in `dense_rank() OVER ()` over a RIGHT_ANTI hash join that returns its unmatched rows", one of 9 posts from 8 people on GitHub issues.
Modeling data in Databricks is unclear and hard to change
7 posts from 7 people on Reddit.
Trouble with DuckDB cast
Top post: "TRY_CAST of an empty BLOB to BIT escapes a non-fallible __cast and invalidates the database", one of 7 posts from 6 people on GitHub issues.
Trouble with DuckDB column
Top post: "2.0 alpha: comparing a CASE/split_part result to a constant fails with BindBuiltinScalarFunction did not", one of 7 posts from 5 people on GitHub issues.
Trouble with DuckDB values
Top post: "ManualVuln37 Unbounded Recursion in EncodeVariantValue Causes Stack Overflow via variant_comparator on Deeply", one of 6 posts from 6 people on GitHub issues.
Experiments on DuckDB are hard to reproduce and track
6 posts from 4 people on GitHub issues.
Trouble with DuckDB null
Top post: "DuckDB: `HAVING` of `(φ IS TRUE) OR NOT (φ IS TRUE) AND …` is empty for a NULL `φ`, but the same boolean as", one of 6 posts from 6 people on GitHub issues.
Hard to trace lineage and find trusted data in dbt
6 posts from 6 people on GitHub issues, Reddit.
Upstream schema changes break downstream pipelines
6 posts from 6 people on GitHub issues, Reddit.
Trouble with DuckDB parquet
Top post: "External file cache range metadata grows for deleted local Parquet files in v1.5.6 despite buffer eviction", one of 5 posts from 5 people on GitHub issues.
Trouble with dbt fusion
Top post: "With dbt Fusion and no dbt-core, every definitions load runs `dbt list` and leaves a target directory behind", one of 4 posts from 4 people on GitHub issues.
Apache Spark upgrades break working setups
4 posts from 4 people on GitHub issues.
Apache Airflow login, SSO or OAuth breaks
4 posts from 3 people on GitHub issues.
DuckDB costs outgrow the value it gives
4 posts from 4 people on GitHub issues.
About
Problems here are about DuckDB or name it. It is tracked from the product list on the Method page. Website: duckdb.org.