@     0x7f4bd28a959f  (unknown)
    @     0x7f4bd2906d5f  __syscall_cancel_arch
    @     0x7f4bd28fb377  __internal_syscall_cancel
    @     0x7f4bd28fb9eb  __futex_abstimed_wait_common
    @     0x7f4bd28fe087  __GI___pthread_cond_wait
    @     0x559a1fe65771  std::__1::condition_variable::wait()
    @     0x559a2391c44f  yb::BackgroundTask::Run()
    @     0x559a2358ffb4  yb::Thread::SuperviseThread()
    @     0x7f4bd28feac0  start_thread
    @     0x7f4bd297dcbb  __clone3

Total number of threads: 1