v.22.9Experimental Feature

Improvement: Remove Completely Processed WAL Files in Memory Data Parts

Official CH changelog text
Improvement for in-memory data parts: remove completely processed WAL files. #40592 (Azat Khuzhin).
Improved management of in-memory data parts by completely removing processed WAL (Write-Ahead Log) files.

Why it matters

This feature enhances storage efficiency and resource management by ensuring that WAL files that have been fully processed and are no longer needed are deleted. This prevents unnecessary disk usage and potential clutter from residual WAL files.

How to use it

The feature operates automatically as part of the in-memory data parts lifecycle. Users do not need to manually enable it; processed WAL files are removed once they are fully utilized.

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