Tag: parquet

What an oversized iOS binary, a Linux linker error, and a SQL boundary teach about embedding DuckDB as the Parquet reader for languages without a mature native library.

Outcome: Reader can decide when DuckDB is the right Parquet path for a Swift or Zig project, configure the SPM and build.zig integrations correctly the first time, and avoid the binary-size and linker failures that the unconfigured path produces.

Why a precompiled-NIF fall-through on a less-common Linux target adds quiet minutes to a deploy, and what the borrowed-runtime pattern actually looks like for Elixir and Mojo.

Outcome: Reader can ship Parquet-reading Elixir without surprise source compilation in CI, recognize where Mojo's Python interop boundary is the bottleneck rather than Mojo itself, and know which DataFrame guarantees leak at the BEAM and PyArrow boundaries.

Why a default Go parquet.Read[T] call slurped a 1.4 GB file into 11 GB of resident memory, and the column-native Rust and Go patterns that replaced it.

Outcome: Reader can pick the streaming Parquet read path in Rust and Go, configure the compression-codec features explicitly, and avoid the eager-load anti-patterns that look fine in benchmarks and break in production.