[SOLR-13763] Improve the tracking of "freedisk" in autoscaling simulations

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 8.3
• Assignee: Andrzej Bialecki
• Reporter: Andrzej Bialecki
• Created: 16/Sep/19 15:53
• Updated: 21/Jan/20 16:58
• Resolved: 18/Sep/19 18:42

Description

The "freedisk" node metric is tracked closely when adding / removing / moving replicas but it's not tracked for simulated updates, even though the corresponding simulated replica sizes are.

This causes some inconsistencies in "freedisk" calculation and reporting, which may affect the results of simulations.