tests/testthat/_snaps/append-parquet.md

In nanoparquet: Read and Write 'Parquet' Files

appending all-NA rows to REQUIRED columns gives a clear error

Code
  append_parquet(df_nas, tmp)
Condition
  Error in `check_schema_required_cols()`:
  ! Parquet schema does not allow missing values for columns:id, value, label

nanoparquet documentation built on April 20, 2026, 5:06 p.m.