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147552c34a
Making the count resources on the maintenance (streaming) semaphore live update via config. This will allow us to improve repair speed on mixed-shard clusters, where we suspect that reader trashing -- due to the combination of high number of readers on each shard and very conservative reader count limit (10) -- is the main cause of the slowness. Making this count limit confgurable allows us to start experimenting with this fix, without committing to a count limit increase (or removal), addressing the pain in the field. Refs: #18269 No OSS backport needed. Closes scylladb/scylladb#19248 * github.com:scylladb/scylladb: replica/database: wire in maintenance_reader_concurrency_semaphore_count_limit db/config: introduce maintenance_reader_concurrency_semaphore_count_limit reader_concurrency_semaphore: make count parameter live-update