pyarrow.parquet.RowGroupMetaData

class pyarrow.parquet.RowGroupMetaData

Bases: _Weakrefable

Metadata for a single row group.

__init__(*args, **kwargs)

Methods

__init__(*args, **kwargs)
column(self, int i)	Get column metadata at given index.
equals(self, RowGroupMetaData other)	Return whether the two row group metadata objects are equal.
to_dict(self)	Get dictionary representation of the row group metadata.

Attributes

num_columns	Number of columns in this row group (int).
num_rows	Number of rows in this row group (int).
sorting_columns	Columns the row group is sorted by (tuple of SortingColumn)).
total_byte_size	Total byte size of all the uncompressed column data in this row group (int).

column(self, int i)

Get column metadata at given index.

Parameters:

iint

Index of column to get metadata for.

Returns:

ColumnChunkMetaData

Metadata for column within this chunk.

equals(self, RowGroupMetaData other)

Return whether the two row group metadata objects are equal.

Parameters:

otherRowGroupMetaData

Metadata to compare against.

Returns:

are_equalbool

num_columns

Number of columns in this row group (int).

num_rows

Number of rows in this row group (int).

sorting_columns

Columns the row group is sorted by (tuple of SortingColumn)).

to_dict(self)

Get dictionary representation of the row group metadata.

Returns:

dict

Dictionary with a key for each attribute of this class.

total_byte_size

Total byte size of all the uncompressed column data in this row group (int).