[8.19] [DOCS] Disk space aware threadpool merge scheduler#130530

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albertzaharovits:backport-819-docs-merge-scheduler

Jul 3, 2025

Commits on Jul 3, 2025

This documents the new threadpool-based merge scheduler, which is disk space aware, and blocks merges when disk space is low. The code changes were mostly introduced in #120869 and #127613 .
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