[CASSANDRA-15296] ZstdCompressor compression_level setting

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 4.0-alpha2, 4.0
• Component/s: Dependencies, Feature/Compression
• Bug Category: Code
• Severity: Low
• Complexity: Low Hanging Fruit
• Discovered By: User Report
• Platform: All
• Since Version: 4.0

Source Control Link

https://github.com/apache/cassandra/commit/a7f89688e5b4fdc2f8990fc42cb593da4f6a923f

Test and Documentation Plan

This is a documentation bug.

• Assignee: Romain Hardouin
• Reporter: DeepakVohra

Authors

Romain Hardouin

Reviewers

Dinesh Joshi

• Created: 30/Aug/19 21:50
• Updated: 15/May/20 08:54
• Resolved: 24/Sep/19 18:54

Description

The DEFAULT_COMPRESSION_LEVEL for ZstdCompressor is set to 3, but its range for compression_level is indicated to be between -131072 and 2. The default value is outside the range. Is it by design or a bug?

- ``compression_level`` is only applicable for ``ZstdCompressor`` and accepts values between ``-131072`` and ``2``.

// Compressor Defaults
    public static final int DEFAULT_COMPRESSION_LEVEL = 3;

https://github.com/apache/cassandra/commit/dccf53061a61e7c632669c60cd94626e405518e9

Issue Links

• links to: https://github.com/apache/cassandra/compare/trunk...rhardouin:15296_fix_zstd_doc