group_by.disk.frame

.data

<p>The disk.frame group by operation perform group WITHIN each chunk. This is
often used for performance reasons. If the user wishes to perform group-by,
they may choose to use the `hard_group_by` function which is expensive as it
reorganizes the chunks by the shard key.</p>

A disk-based data manipulation tool for working with
large-than-RAM datasets. Aims to lower the barrier-to-entry for
manipulating large datasets by adhering closely to popular and
familiar data manipulation paradigms like dplyr verbs and
data.table syntax.

Dai ZJ

group_by.disk.frame: Group by within each disk.frame

Description

Usage

Arguments

See Also