Module parquet::file::metadata

Contains information about available Parquet metadata.

The hierarchy of metadata is as follows:

[ParquetMetaData] contains [FileMetaData] and zero or more [RowGroupMetaData] for each row group.

[FileMetaData] includes file version, application specific metadata.

Each [RowGroupMetaData] contains information about row group and one or more [ColumnChunkMetaData] for each column chunk.

[ColumnChunkMetaData] has information about column chunk (primitive leaf column), including encoding/compression, number of values, etc.

Structs

ColumnChunkMetaData	Metadata for a column chunk.
ColumnChunkMetaDataBuilder	Builder for column chunk metadata.
FileMetaData	Metadata for a Parquet file.
ParquetMetaData	Global Parquet metadata.
RowGroupMetaData	Metadata for a row group.
RowGroupMetaDataBuilder	Builder for row group metadata.

Type Definitions

ColumnChunkMetaDataPtr	Reference counted pointer for ColumnChunkMetaData.
FileMetaDataPtr	Reference counted pointer for FileMetaData.
ParquetMetaDataPtr	Reference counted pointer for ParquetMetaData.
RowGroupMetaDataPtr	Reference counted pointer for RowGroupMetaData.