Apache ORC · JSON Structure

Apache Orc File Metadata Structure

FileMetadata schema from Apache ORC

Type: object Properties: 9
Big DataColumnar StorageCompressionFile FormatHadoopApacheOpen Source

FileMetadata is a JSON Structure definition published by Apache ORC, describing 9 properties. It conforms to the https://json-structure.org/meta/core/v0/# meta-schema.

Properties

filePath fileVersion writerVersion compression compressionBlockSize rowCount rawDataSize numberOfStripes stripes

Meta-schema: https://json-structure.org/meta/core/v0/#

JSON Structure

Raw ↑ 
{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/apache-orc/refs/heads/main/json-structure/apache-orc-file-metadata-structure.json",
  "description": "FileMetadata schema from Apache ORC",
  "type": "object",
  "properties": {
    "filePath": {
      "type": "string",
      "example": "data/sales.orc"
    },
    "fileVersion": {
      "type": "string",
      "example": "0.12"
    },
    "writerVersion": {
      "type": "string",
      "example": "ORC_135"
    },
    "compression": {
      "type": "string",
      "example": "ZLIB",
      "enum": [
        "NONE",
        "ZLIB",
        "SNAPPY",
        "LZO",
        "LZ4",
        "ZSTD"
      ]
    },
    "compressionBlockSize": {
      "type": "int32",
      "example": 262144
    },
    "rowCount": {
      "type": "int32",
      "example": 1000000
    },
    "rawDataSize": {
      "type": "int32",
      "example": 104857600
    },
    "numberOfStripes": {
      "type": "int32",
      "example": 10
    },
    "stripes": {
      "type": "array",
      "items": {
        "$ref": "#/components/schemas/StripeInfo"
      }
    }
  },
  "name": "FileMetadata"
}