v.20.11Improvement
Add TablesToDropQueueSize Metric for Dropped Tables
Add TablesToDropQueueSize metric. It's equal to number of dropped tables, that are waiting for background data removal. #16364 (tavplubix).Why it matters
This feature provides users with insight into the current number of tables that have been dropped but whose data is still pending background deletion, helping monitor and troubleshoot table drop operations and disk space recovery.How to use it
Users can monitor theTablesToDropQueueSize metric through ClickHouse's existing metrics interface to track how many tables are queued for background data removal. No special configuration is required to enable this metric.