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7c6fb131f3
Currently, while stopping the compaction_manager, we stop task_manager compaction module and concurrently run compaction_manager::really_do_stop. really_do_stop stops and waits for all task_executors that are kept in compaction_manager::_tasks, but nothing ensures that no more tasks will be added there. Due to leftover tasks, we trigger on_fatal_internal_error. Modify the order of compaction_manager::stop. After the change, we stop compaction tasks in the following order: - abort module abort source; - close module gate in the background; - stop_ongoing_compactions (kept in compaction_manager::_tasks); - wait until module gate is closed. Check module abort source before creating compaction executor and adding it to _tasks. Thanks to the above, we can be sure that: - after module::stop there will be no tasks in _tasks; - compaction_manager::stop aborts all tasks; we don't wait for any whole compaction to finish. Fixes: https://github.com/scylladb/scylladb/issues/25806. Fixes shutdown bug; Needs backports to all version Closes scylladb/scylladb#25885 * github.com:scylladb/scylladb: compaction: move _tasks check compaction: stop compaction module in really_do_stop