Read Parquet key-value metadata — parquet_kv

Reads the custom key-value metadata stored in a Parquet file's footer. This includes the full VCF header if the file was created with vcf_to_parquet_duckdb with include_metadata = TRUE.

Usage

parquet_kv_metadata(file, con = NULL)

Arguments

file: Path to Parquet file
con: Optional existing DuckDB connection

Value

A data frame with columns: key, value. Returns empty data frame if no custom metadata exists.

Examples

if (FALSE) { # \dontrun{
meta <- parquet_kv_metadata("variants.parquet")
# Get the VCF header
vcf_header <- meta[meta$key == "vcf_header", "value"]
cat(vcf_header)
} # }