Class ColumnChunkMetaData

Metadata for a Parquet column chunk.

Constructors

constructor

Methods

columnPath compressedSize compression encodings fileOffset filePath free numValues uncompressedSize

Constructors

constructor

Methods

columnPath

  • columnPath(): string[]

  • Path (or identifier) of this column.

    Returns string[]

compressedSize

  • compressedSize(): number

  • Returns the total compressed data size of this column chunk.

    Returns number

compression

  • compression(): Compression

  • Compression for this column.

    Returns Compression

encodings

  • encodings(): any[]

  • All encodings used for this column.

    Returns any[]

fileOffset

  • fileOffset(): bigint

  • Byte offset in file_path().

    Returns bigint

filePath

  • filePath(): string

  • File where the column chunk is stored.

    If not set, assumed to belong to the same file as the metadata. This path is relative to the current file.

    Returns string

free

  • free(): void

  • Returns void

numValues

  • numValues(): number

  • Total number of values in this column chunk.

    Returns number

uncompressedSize

  • uncompressedSize(): number

  • Returns the total uncompressed data size of this column chunk.

    Returns number

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constructorcolumnPathcompressedSizecompressionencodingsfileOffsetfilePathfreenumValuesuncompressedSize