cudf::io::parquet::FileMetaData Struct Reference

Thrift-derived struct describing file-level metadata. More...

#include <parquet_schema.hpp>

Public Attributes
int32_t	version = 0
	Version of this file.
std::vector< SchemaElement >	schema
int64_t	num_rows = 0
	Number of rows in this file.
std::vector< RowGroup >	row_groups
	Row groups in this file.
std::vector< KeyValue >	key_value_metadata
	Optional key/value metadata.
std::string	created_by = ""
	String for application that wrote this file.
std::optional< std::vector< ColumnOrder > >	column_orders

Detailed Description

Thrift-derived struct describing file-level metadata.

The additional information stored in the key_value_metadata can be used during reading to reconstruct the output data to the exact original dataset prior to conversion to Parquet.

Definition at line 834 of file parquet_schema.hpp.

Member Data Documentation

column_orders

std::optional<std::vector<ColumnOrder> > cudf::io::parquet::FileMetaData::column_orders

Sort order used for the min_value and max_value fields in the Statistics objects and the min_values and max_values fields in the ColumnIndex objects of each column in this file.

Definition at line 852 of file parquet_schema.hpp.

schema

std::vector<SchemaElement> cudf::io::parquet::FileMetaData::schema

Parquet schema for this file. This schema contains metadata for all the columns. The schema is represented as a tree with a single root. The nodes of the tree are flattened to a list by doing a depth-first traversal. The column metadata contains the path in the schema for that column which can be used to map columns to nodes in the schema. The first element is the root

Definition at line 841 of file parquet_schema.hpp.

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The documentation for this struct was generated from the following file:

• parquet_schema.hpp