Deprecate indices.merge.scheduler.use_thread_pool setting#129464

elasticsearchmachine merged 13 commits intoelastic:mainelastic/elasticsearch:mainfrom

albertzaharovits:deprecate-setting-to-switch-to-the-old-concurrent-merge-scheduleralbertzaharovits/elasticsearch:deprecate-setting-to-switch-to-the-old-concurrent-merge-schedulerCopy head branch name to clipboard