v.24.6Improvement
Add Metrics for Directory Management and In-Memory Map Entries in Plain Rewritable Metadata Storage
Add metrics to track the number of directories created and removed by the plain_rewritable metadata storage, and the number of entries in the local-to-remote in-memory map. #64175 (Julia Kartseva).Why it matters
This feature provides enhanced observability into the internal operations of theplain_rewritable metadata storage by tracking directory management and in-memory map size. It helps users and administrators understand storage behavior and diagnose potential issues related to metadata storage management.How to use it
The metrics are automatically collected and exposed when using theplain_rewritable metadata storage. Users can monitor these metrics through the standard ClickHouse metrics interfaces without additional configuration.