ParquetReaderProperties class

This class holds settings to control how a Parquet file is read by ParquetFileReader.

Factory

The ParquetReaderProperties$create() factory method instantiates the object and takes the following arguments:

• use_threads Logical: whether to use multithreading (default TRUE)

Methods

• $read_dictionary(column_index)

• $set_read_dictionary(column_index, read_dict)

• $use_threads(use_threads)

Super class

arrow::Object -> ParquetReaderProperties

Methods

Public methods

• ParquetReaderProperties$read_dictionary()

• ParquetReaderProperties$set_read_dictionary()

• ParquetReaderProperties$clone()

Inherited methods

• arrow::Object$initialize()

• arrow::Object$pointer()

• arrow::Object$print()

• arrow::Object$set_pointer()

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Method read_dictionary()

Usage

ParquetReaderProperties$read_dictionary(column_index)

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Method set_read_dictionary()

Usage

ParquetReaderProperties$set_read_dictionary(column_index, read_dict)

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Method clone()

The objects of this class are cloneable with this method.

Usage

ParquetReaderProperties$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.