private void runTask(final Runnable task) {
            try {
                task.run();
            } catch (final Throwable t) {
                LOG.warn("Caught an unknown error while executing a task", t);
            }
        }
Offers the task to the associated {@link RejectedExecutionHandler}.

@param task to reject.
jraft-core/src/main/java/com/alipay/sofa/jraft/util/concurrent/MpscSingleThreadExecutor.java