{
  "schema_name": "match_index_parquet",
  "schema_version": 3,
  "artifact": "match_index.parquet",
  "format": "parquet",
  "row_grain": "one row per match-map demo",
  "description": "Semantic match-map-level grouping and aggregate counts. Physical shard paths and byte offsets live only in sample_index.parquet.",
  "primary_key": [
    "match_id"
  ],
  "columns": [
    {
      "name": "match_id",
      "arrow_type": "string",
      "nullable": false
    },
    {
      "name": "split",
      "arrow_type": "string",
      "nullable": false
    },
    {
      "name": "map_slug",
      "arrow_type": "string",
      "nullable": false
    },
    {
      "name": "round_count",
      "arrow_type": "int32",
      "nullable": false
    },
    {
      "name": "complete_10_rounds",
      "arrow_type": "int32",
      "nullable": false,
      "description": "Number of rounds with all 10 POV samples present."
    },
    {
      "name": "sample_count",
      "arrow_type": "int32",
      "nullable": false
    },
    {
      "name": "pov_count",
      "arrow_type": "int32",
      "nullable": false,
      "description": "Distinct anonymized POV ids observed for this match."
    },
    {
      "name": "total_frames",
      "arrow_type": "int64",
      "nullable": false
    },
    {
      "name": "total_duration_s",
      "arrow_type": "float64",
      "nullable": false
    },
    {
      "name": "first_tick",
      "arrow_type": "int64",
      "nullable": false,
      "description": "Earliest released round/sample tick for this match."
    },
    {
      "name": "last_tick",
      "arrow_type": "int64",
      "nullable": false,
      "description": "Latest released round/sample tick for this match."
    },
    {
      "name": "t_rounds_won",
      "arrow_type": "int32",
      "nullable": false
    },
    {
      "name": "ct_rounds_won",
      "arrow_type": "int32",
      "nullable": false
    }
  ],
  "validation": [
    "primary key is unique",
    "round_count > 0",
    "complete_10_rounds == round_count",
    "sample_count > 0",
    "pov_count == 10",
    "total_frames > 0",
    "total_duration_s > 0",
    "first_tick <= last_tick",
    "t_rounds_won + ct_rounds_won <= round_count",
    "no resolution, shard_path, or byte-offset columns are present",
    "no column is named map"
  ]
}