ParquetArrowReaderProperties

This class holds settings to control how a Parquet file is read
by <a rd-options="" href="/link/ParquetFileReader?package=arrow&version=8.0.0" data-mini-rdoc="arrow::ParquetFileReader">ParquetFileReader</a>.

'Apache' 'Arrow' <https://arrow.apache.org/> is a cross-language
development platform for in-memory data. It specifies a standardized
language-independent columnar memory format for flat and hierarchical data,
organized for efficient analytic operations on modern hardware. This
package provides an interface to the 'Arrow C++' library.

Neal Richardson

arrow

Integration to 'Apache' 'Arrow'

Ian Cook

Nic Crane

Dewey Dunnington

Romain François

Jonathan Keane

Dragoș Moldovan-Grünfeld

Jeroen Ooms

Javier Luraschi

Karl Dunkle Werner

Jeffrey Wong

Apache Arrow 

ParquetArrowReaderProperties function

The <code>ParquetArrowReaderProperties$create()</code> factory method instantiates the object
and takes the following arguments:<ul>
<li><code>use_threads</code> Logical: whether to use multithreading (default <code>TRUE</code>)</li>
</ul>

Factory

<ul>
<li><code>$read_dictionary(column_index)</code></li>
<li><code>$set_read_dictionary(column_index, read_dict)</code></li>
<li><code>$use_threads(use_threads)</code></li>
</ul>

Methods

This class holds settings to control how a Parquet file is read
by <a rd-options='' href='ParquetFileReader'>ParquetFileReader</a>.

ParquetArrowReaderProperties class — ParquetArrowReaderProperties

ParquetArrowReaderProperties class

ParquetArrowReaderProperties: ParquetArrowReaderProperties class

Description

Arguments

Factory

Methods