* thread #1: tid = 0x68728, 0x00007fff84dbd2a2 libsystem_kernel.dylib`poll + 10, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
  * frame #0: 0x00007fff84dbd2a2 libsystem_kernel.dylib`poll + 10
    frame #1: 0x0000000102051849 mysqld`handle_connections_sockets() + 900
    frame #2: 0x000000010204f974 mysqld`mysqld_main(int, char**) + 13411
    frame #3: 0x00007fff8a32e5ad libdyld.dylib`start + 1
    frame #4: 0x00007fff8a32e5ad libdyld.dylib`start + 1

  thread #2: tid = 0x68729, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x0000000102504e54 mysqld`timer_handler + 431
    frame #3: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #4: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #5: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #3: tid = 0x6872a, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x00000001022bd941 mysqld`my_service_thread_sleep + 349
    frame #3: 0x00000001022b7891 mysqld`ma_checkpoint_background + 555
    frame #4: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #5: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #6: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #4: tid = 0x6872b, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cab2 mysqld`os_event_wait_low(os_event*, long long) + 144
    frame #3: 0x000000010244add3 mysqld`os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*, unsigned long*) + 203
    frame #4: 0x00000001023ad7f8 mysqld`fil_aio_wait(unsigned long) + 83
    frame #5: 0x00000001024b3104 mysqld`io_handler_thread + 138
    frame #6: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #7: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #8: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #5: tid = 0x6872c, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cab2 mysqld`os_event_wait_low(os_event*, long long) + 144
    frame #3: 0x000000010244add3 mysqld`os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*, unsigned long*) + 203
    frame #4: 0x00000001023ad7f8 mysqld`fil_aio_wait(unsigned long) + 83
    frame #5: 0x00000001024b3104 mysqld`io_handler_thread + 138
    frame #6: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #7: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #8: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #6: tid = 0x6872d, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cab2 mysqld`os_event_wait_low(os_event*, long long) + 144
    frame #3: 0x000000010244add3 mysqld`os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*, unsigned long*) + 203
    frame #4: 0x00000001023ad7f8 mysqld`fil_aio_wait(unsigned long) + 83
    frame #5: 0x00000001024b3104 mysqld`io_handler_thread + 138
    frame #6: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #7: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #8: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #7: tid = 0x6872e, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cab2 mysqld`os_event_wait_low(os_event*, long long) + 144
    frame #3: 0x000000010244add3 mysqld`os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*, unsigned long*) + 203
    frame #4: 0x00000001023ad7f8 mysqld`fil_aio_wait(unsigned long) + 83
    frame #5: 0x00000001024b3104 mysqld`io_handler_thread + 138
    frame #6: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #7: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #8: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #8: tid = 0x6872f, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cab2 mysqld`os_event_wait_low(os_event*, long long) + 144
    frame #3: 0x000000010244add3 mysqld`os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*, unsigned long*) + 203
    frame #4: 0x00000001023ad7f8 mysqld`fil_aio_wait(unsigned long) + 83
    frame #5: 0x00000001024b3104 mysqld`io_handler_thread + 138
    frame #6: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #7: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #8: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #9: tid = 0x68730, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cab2 mysqld`os_event_wait_low(os_event*, long long) + 144
    frame #3: 0x000000010244add3 mysqld`os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*, unsigned long*) + 203
    frame #4: 0x00000001023ad7f8 mysqld`fil_aio_wait(unsigned long) + 83
    frame #5: 0x00000001024b3104 mysqld`io_handler_thread + 138
    frame #6: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #7: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #8: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #10: tid = 0x68731, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cab2 mysqld`os_event_wait_low(os_event*, long long) + 144
    frame #3: 0x000000010244add3 mysqld`os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*, unsigned long*) + 203
    frame #4: 0x00000001023ad7f8 mysqld`fil_aio_wait(unsigned long) + 83
    frame #5: 0x00000001024b3104 mysqld`io_handler_thread + 138
    frame #6: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #7: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #8: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #11: tid = 0x68732, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cab2 mysqld`os_event_wait_low(os_event*, long long) + 144
    frame #3: 0x000000010244add3 mysqld`os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*, unsigned long*) + 203
    frame #4: 0x00000001023ad7f8 mysqld`fil_aio_wait(unsigned long) + 83
    frame #5: 0x00000001024b3104 mysqld`io_handler_thread + 138
    frame #6: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #7: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #8: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #12: tid = 0x68733, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cab2 mysqld`os_event_wait_low(os_event*, long long) + 144
    frame #3: 0x000000010244add3 mysqld`os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*, unsigned long*) + 203
    frame #4: 0x00000001023ad7f8 mysqld`fil_aio_wait(unsigned long) + 83
    frame #5: 0x00000001024b3104 mysqld`io_handler_thread + 138
    frame #6: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #7: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #8: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #13: tid = 0x68734, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cab2 mysqld`os_event_wait_low(os_event*, long long) + 144
    frame #3: 0x000000010244add3 mysqld`os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*, unsigned long*) + 203
    frame #4: 0x00000001023ad7f8 mysqld`fil_aio_wait(unsigned long) + 83
    frame #5: 0x00000001024b3104 mysqld`io_handler_thread + 138
    frame #6: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #7: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #8: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #14: tid = 0x68736, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cc6c mysqld`os_event_wait_time_low(os_event*, unsigned long, long long) + 363
    frame #3: 0x000000010242ac3c mysqld`lock_wait_timeout_thread + 115
    frame #4: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #5: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #6: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #15: tid = 0x68737, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cc6c mysqld`os_event_wait_time_low(os_event*, unsigned long, long long) + 363
    frame #3: 0x00000001024af6d0 mysqld`srv_error_monitor_thread + 1903
    frame #4: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #5: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #6: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #16: tid = 0x68738, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cc6c mysqld`os_event_wait_time_low(os_event*, unsigned long, long long) + 363
    frame #3: 0x00000001024aec22 mysqld`srv_monitor_thread + 210
    frame #4: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #5: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #6: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #17: tid = 0x68739, 0x00007fff84dbc07a libsystem_kernel.dylib`__select + 10
    frame #0: 0x00007fff84dbc07a libsystem_kernel.dylib`__select + 10
    frame #1: 0x000000010244d256 mysqld`os_thread_sleep(unsigned long) + 60
    frame #2: 0x00000001024b040b mysqld`srv_master_thread + 272
    frame #3: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #4: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #5: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #18: tid = 0x6873a, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cab2 mysqld`os_event_wait_low(os_event*, long long) + 144
    frame #3: 0x00000001024b1a5c mysqld`srv_purge_coordinator_thread + 971
    frame #4: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #5: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #6: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #19: tid = 0x6873b, 0x00007fff84dbc07a libsystem_kernel.dylib`__select + 10
    frame #0: 0x00007fff84dbc07a libsystem_kernel.dylib`__select + 10
    frame #1: 0x000000010244d256 mysqld`os_thread_sleep(unsigned long) + 60
    frame #2: 0x000000010236b487 mysqld`buf_flush_page_cleaner_thread + 197
    frame #3: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #4: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #5: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #20: tid = 0x6873c, 0x00007fff84dbc07a libsystem_kernel.dylib`__select + 10
    frame #0: 0x00007fff84dbc07a libsystem_kernel.dylib`__select + 10
    frame #1: 0x000000010244d256 mysqld`os_thread_sleep(unsigned long) + 60
    frame #2: 0x000000010236c1cb mysqld`buf_flush_lru_manager_thread + 174
    frame #3: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #4: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #5: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #21: tid = 0x6873d, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cab2 mysqld`os_event_wait_low(os_event*, long long) + 144
    frame #3: 0x0000000102365f16 mysqld`buf_dump_thread + 103
    frame #4: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #5: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #6: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #22: tid = 0x6873e, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cc6c mysqld`os_event_wait_time_low(os_event*, unsigned long, long long) + 363
    frame #3: 0x000000010239e315 mysqld`dict_stats_thread + 2343
    frame #4: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #5: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #6: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #23: tid = 0x6873f, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cc6c mysqld`os_event_wait_time_low(os_event*, unsigned long, long long) + 363
    frame #3: 0x00000001024d8d3c mysqld`ib_wqueue_timedwait(ib_wqueue_t*, long) + 332
    frame #4: 0x00000001023da91e mysqld`fts_optimize_thread(void*) + 582
    frame #5: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #6: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #7: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #24: tid = 0x68740, 0x00000001024d7d6e mysqld`ut_delay(unsigned long) + 39
    frame #0: 0x00000001024d7d6e mysqld`ut_delay(unsigned long) + 39
    frame #1: 0x00000001024bb0e3 mysqld`mutex_spin_wait(void*, bool, char const*, unsigned long) + 266
    frame #2: 0x00000001023a4528 mysqld`fil_decr_pending_ops(unsigned long) + 142
    frame #3: 0x00000001023b4187 mysqld`fil_crypt_find_space_to_rotate(key_state_t*, rotate_thread_t*, bool*) + 4646
    frame #4: 0x00000001023b473e mysqld`fil_crypt_thread + 763
    frame #5: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #6: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #7: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #25: tid = 0x68741, 0x00000001024d7d6e mysqld`ut_delay(unsigned long) + 39
    frame #0: 0x00000001024d7d6e mysqld`ut_delay(unsigned long) + 39
    frame #1: 0x00000001024bb0e3 mysqld`mutex_spin_wait(void*, bool, char const*, unsigned long) + 266
    frame #2: 0x00000001023a2384 mysqld`fil_space_get_flags(unsigned long) + 154
    frame #3: 0x00000001023a255d mysqld`fil_space_get_zip_size(unsigned long) + 9
    frame #4: 0x0000000102348257 mysqld`btr_scrub_start_space(unsigned long, btr_scrub_t*) + 33
    frame #5: 0x00000001023b40e3 mysqld`fil_crypt_find_space_to_rotate(key_state_t*, rotate_thread_t*, bool*) + 4482
    frame #6: 0x00000001023b473e mysqld`fil_crypt_thread + 763
    frame #7: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #8: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #9: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #26: tid = 0x68742, 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff84dbbdb6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff81ef5728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010244cc6c mysqld`os_event_wait_time_low(os_event*, unsigned long, long long) + 363
    frame #3: 0x00000001023b46b2 mysqld`fil_crypt_thread + 623
    frame #4: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #5: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #6: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #27: tid = 0x68743, 0x000000010239fbf2 mysqld`fil_space_get_by_id(unsigned long) + 30
    frame #0: 0x000000010239fbf2 mysqld`fil_space_get_by_id(unsigned long) + 30
    frame #1: 0x00000001023aff89 mysqld`fil_space_get_crypt_data(unsigned long) + 247
    frame #2: 0x00000001023b3590 mysqld`fil_crypt_find_space_to_rotate(key_state_t*, rotate_thread_t*, bool*) + 1583
    frame #3: 0x00000001023b473e mysqld`fil_crypt_thread + 763
    frame #4: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #5: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #6: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #28: tid = 0x68744, 0x00007fff84dbc07a libsystem_kernel.dylib`__select + 10
    frame #0: 0x00007fff84dbc07a libsystem_kernel.dylib`__select + 10
    frame #1: 0x000000010244d256 mysqld`os_thread_sleep(unsigned long) + 60
    frame #2: 0x000000010234f0bc mysqld`btr_defragment_thread + 946
    frame #3: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #4: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #5: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13

  thread #29: tid = 0x68747, 0x00007fff84dbc3c2 libsystem_kernel.dylib`__sigwait + 10
    frame #0: 0x00007fff84dbc3c2 libsystem_kernel.dylib`__sigwait + 10
    frame #1: 0x00007fff81ef6ed2 libsystem_pthread.dylib`sigwait + 61
    frame #2: 0x000000010204c035 mysqld`signal_hand + 786
    frame #3: 0x00007fff81ef499d libsystem_pthread.dylib`_pthread_body + 131
    frame #4: 0x00007fff81ef491a libsystem_pthread.dylib`_pthread_start + 168
    frame #5: 0x00007fff81ef2351 libsystem_pthread.dylib`thread_start + 13