parquet::file

Module metadata

Source
Expand description

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.

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