{
  "namespace": "sra/sample",
  "key": "2026-09-02_Incremental",
  "completed_at": "2026-09-03T01:37:48.122793+00:00",
  "metadata": {
    "row_count": 1007655,
    "parquet_parts": 3,
    "source_url": "https://ftp.ncbi.nlm.nih.gov/sra/reports/Mirroring/NCBI_SRA_Mirroring_20260902/meta_sample_set.xml.gz",
    "output_dir": "s3://omicidx/sra/raw/sample/date=2026-09-02/stage=Incremental"
  }
}