Skip to content

ALP compression for Floating point numbers #60533

@MacNale

Description

@MacNale

Describe what's wrong
This is a feature request to see if the support for ALP compression for Floating point numbers is better than the existing one. If yes, the adding support for ALP would be beneficial as we deal with many Float columns.

Does it reproduce on the most recent release?
No

Discussed in #60393

Originally posted by MacNale February 25, 2024
Came across a youtube video discussing ALP compression. It looks ALP works well for Floating point numbers compression in vectors and faster.

image image

Sources -
https://www.youtube.com/watch?v=GKG5b04o5Yc
https://ir.cwi.nl/pub/33334

  1. Does clickhouse support ALP?
  2. What is best way to encode/compress Float64 today in clickhouse?

Metadata

Metadata

Assignees

No one assigned

    Labels

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions