message: bugfix pika_to_redis sender thread early exit in some scenarios
diff: @@ -150,7 +150,7 @@ void *Sender::ThreadMain() {
  if (cli_ == NULL) {
  ConnectRedis();
  - if (should_exit_) {
  + if (QueueSize() == 0 && should_exit_) {
  return NULL;
  }
  } else {
  