int commitAll() {
        return commit(tasks.allTasks());
    }
Returns tasks owned by the stream thread. With state updater disabled, these are all tasks. With
state updater enabled, this does not return any tasks currently owned by the state updater.

TODO: after we complete switching to state updater, we could rename this function as allRunningTasks
      to be differentiated from allTasks including running and restoring tasks
streams/src/main/java/org/apache/kafka/streams/processor/internals/TaskManager.java