@     0x7f3e42cba59f  (unknown)
    @     0x7f3e42d17d5f  __syscall_cancel_arch
    @     0x7f3e42d0c377  __internal_syscall_cancel
    @     0x7f3e42d0c9eb  __futex_abstimed_wait_common
    @     0x7f3e42d0f087  __GI___pthread_cond_wait
    @     0x55ecebab7edc  std::__1::__function::__func<>::operator()()
    @     0x55ecedd8ffb4  yb::Thread::SuperviseThread()
    @     0x7f3e42d0fac0  start_thread
    @     0x7f3e42d8ecbb  __clone3

Total number of threads: 1