root@acceptance-group-replication-debian8-node1:~# ps aux | grep mysql mysql 2686 0.0 9.2 1702756 104324 ? Sl+ 06:52 0:00 /usr/sbin/mysqld --initialize-insecure root 2715 0.0 0.1 14392 1764 ? S+ 06:52 0:00 grep mysql root@acceptance-group-replication-debian8-node1:~# gdb --pid=2686 GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word". Attaching to process 2686 Reading symbols from /usr/sbin/mysqld...(no debugging symbols found)...done. Reading symbols from /lib/x86_64-linux-gnu/libpthread.so.0...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libpthread-2.19.so...done. done. [New LWP 2711] [New LWP 2710] [New LWP 2709] [New LWP 2708] [New LWP 2707] [New LWP 2706] [New LWP 2705] [New LWP 2704] [New LWP 2703] [New LWP 2702] [New LWP 2701] [New LWP 2700] [New LWP 2699] [New LWP 2698] [New LWP 2697] [New LWP 2696] [New LWP 2695] [New LWP 2694] [New LWP 2693] [New LWP 2692] [New LWP 2691] [New LWP 2690] [New LWP 2689] [New LWP 2688] [New LWP 2687] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Loaded symbols for /lib/x86_64-linux-gnu/libpthread.so.0 Reading symbols from /lib/x86_64-linux-gnu/libaio.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/x86_64-linux-gnu/libaio.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libnuma.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libnuma.so.1 Reading symbols from /lib/x86_64-linux-gnu/libcrypt.so.1...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libcrypt-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libcrypt.so.1 Reading symbols from /lib/x86_64-linux-gnu/libdl.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libdl-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libdl.so.2 Reading symbols from /lib/x86_64-linux-gnu/librt.so.1...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/librt-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/librt.so.1 Reading symbols from /usr/lib/x86_64-linux-gnu/libstdc++.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/x86_64-linux-gnu/libstdc++.so.6 Reading symbols from /lib/x86_64-linux-gnu/libm.so.6...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libm-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libm.so.6 Reading symbols from /lib/x86_64-linux-gnu/libgcc_s.so.1...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libgcc_s.so.1...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libgcc_s.so.1 Reading symbols from /lib/x86_64-linux-gnu/libc.so.6...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libc-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libc.so.6 Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/ld-2.19.so...done. done. Loaded symbols for /lib64/ld-linux-x86-64.so.2 Reading symbols from /lib/x86_64-linux-gnu/libnss_compat.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libnss_compat-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libnss_compat.so.2 Reading symbols from /lib/x86_64-linux-gnu/libnsl.so.1...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libnsl-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libnsl.so.1 Reading symbols from /lib/x86_64-linux-gnu/libnss_nis.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libnss_nis-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libnss_nis.so.2 Reading symbols from /lib/x86_64-linux-gnu/libnss_files.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libnss_files-2.19.so...done. done. Loaded symbols for /lib/x86_64-linux-gnu/libnss_files.so.2 Reading symbols from /usr/lib/mysql/plugin/group_replication.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/mysql/plugin/group_replication.so pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 185 ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: No such file or directory. (gdb) thread apply all back Thread 26 (Thread 0x7f8aed2c1700 (LWP 2687)): #0 0x00007f8aeeb2ff1f in do_sigwaitinfo (set=, info=0x7f8aed2c0e70) at ../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/sigwaitinfo.c:54 #1 0x00007f8aeeb2ffc3 in __GI___sigwaitinfo (set=0x7f8aed2c0df0, info=0x7f8aed2c0e70) at ../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/sigwaitinfo.c:81 #2 0x0000000000e9035b in ?? () #3 0x00007f8af011f064 in start_thread (arg=0x7f8aed2c1700) at pthread_create.c:309 #4 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 25 (Thread 0x7f8abd2c6700 (LWP 2688)): #0 0x00007f8aeff156ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x0000000000ffca29 in LinuxAIOHandler::collect() () #2 0x0000000000fff86c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () #3 0x00000000010061dd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () #4 0x00000000011c80b0 in fil_aio_wait(unsigned long) () #5 0x00000000010ba230 in io_handler_thread () #6 0x00007f8af011f064 in start_thread (arg=0x7f8abd2c6700) at pthread_create.c:309 #7 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 24 (Thread 0x7f8abcac5700 (LWP 2689)): #0 0x00007f8aeff156ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x0000000000ffca29 in LinuxAIOHandler::collect() () #2 0x0000000000fff86c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () #3 0x00000000010061dd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () #4 0x00000000011c80b0 in fil_aio_wait(unsigned long) () #5 0x00000000010ba230 in io_handler_thread () #6 0x00007f8af011f064 in start_thread (arg=0x7f8abcac5700) at pthread_create.c:309 #7 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 23 (Thread 0x7f8abc2c4700 (LWP 2690)): #0 0x00007f8aeff156ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x0000000000ffca29 in LinuxAIOHandler::collect() () #2 0x0000000000fff86c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () #3 0x00000000010061dd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () #4 0x00000000011c80b0 in fil_aio_wait(unsigned long) () #5 0x00000000010ba230 in io_handler_thread () #6 0x00007f8af011f064 in start_thread (arg=0x7f8abc2c4700) at pthread_create.c:309 #7 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 22 (Thread 0x7f8abbac3700 (LWP 2691)): #0 0x00007f8aeff156ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x0000000000ffca29 in LinuxAIOHandler::collect() () #2 0x0000000000fff86c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () #3 0x00000000010061dd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () #4 0x00000000011c80b0 in fil_aio_wait(unsigned long) () #5 0x00000000010ba230 in io_handler_thread () #6 0x00007f8af011f064 in start_thread (arg=0x7f8abbac3700) at pthread_create.c:309 #7 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 21 (Thread 0x7f8abb2c2700 (LWP 2692)): ---Type to continue, or q to quit--- #0 0x00007f8aeff156ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x0000000000ffca29 in LinuxAIOHandler::collect() () #2 0x0000000000fff86c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () #3 0x00000000010061dd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () #4 0x00000000011c80b0 in fil_aio_wait(unsigned long) () #5 0x00000000010ba230 in io_handler_thread () #6 0x00007f8af011f064 in start_thread (arg=0x7f8abb2c2700) at pthread_create.c:309 #7 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 20 (Thread 0x7f8abaac1700 (LWP 2693)): #0 0x00007f8aeff156ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x0000000000ffca29 in LinuxAIOHandler::collect() () #2 0x0000000000fff86c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () #3 0x00000000010061dd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () #4 0x00000000011c80b0 in fil_aio_wait(unsigned long) () #5 0x00000000010ba230 in io_handler_thread () #6 0x00007f8af011f064 in start_thread (arg=0x7f8abaac1700) at pthread_create.c:309 #7 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 19 (Thread 0x7f8aba2c0700 (LWP 2694)): #0 0x00007f8aeff156ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x0000000000ffca29 in LinuxAIOHandler::collect() () #2 0x0000000000fff86c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () #3 0x00000000010061dd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () #4 0x00000000011c80b0 in fil_aio_wait(unsigned long) () #5 0x00000000010ba230 in io_handler_thread () #6 0x00007f8af011f064 in start_thread (arg=0x7f8aba2c0700) at pthread_create.c:309 #7 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 18 (Thread 0x7f8ab9abf700 (LWP 2695)): #0 0x00007f8aeff156ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x0000000000ffca29 in LinuxAIOHandler::collect() () #2 0x0000000000fff86c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () #3 0x00000000010061dd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () #4 0x00000000011c80b0 in fil_aio_wait(unsigned long) () #5 0x00000000010ba230 in io_handler_thread () #6 0x00007f8af011f064 in start_thread (arg=0x7f8ab9abf700) at pthread_create.c:309 #7 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 17 (Thread 0x7f8ab92be700 (LWP 2696)): #0 0x00007f8aeff156ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x0000000000ffca29 in LinuxAIOHandler::collect() () #2 0x0000000000fff86c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () #3 0x00000000010061dd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () #4 0x00000000011c80b0 in fil_aio_wait(unsigned long) () #5 0x00000000010ba230 in io_handler_thread () #6 0x00007f8af011f064 in start_thread (arg=0x7f8ab92be700) at pthread_create.c:309 #7 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 16 (Thread 0x7f8ab8abd700 (LWP 2697)): #0 0x00007f8aeff156ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 ---Type to continue, or q to quit--- #1 0x0000000000ffca29 in LinuxAIOHandler::collect() () #2 0x0000000000fff86c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () #3 0x00000000010061dd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () #4 0x00000000011c80b0 in fil_aio_wait(unsigned long) () #5 0x00000000010ba230 in io_handler_thread () #6 0x00007f8af011f064 in start_thread (arg=0x7f8ab8abd700) at pthread_create.c:309 #7 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 15 (Thread 0x7f8ab82bc700 (LWP 2698)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 #1 0x0000000001007d03 in os_event::timed_wait(timespec const*) () #2 0x0000000001007f61 in os_event::wait_time_low(unsigned long, long) () #3 0x000000000116f51f in buf_flush_page_cleaner_coordinator () #4 0x00007f8af011f064 in start_thread (arg=0x7f8ab82bc700) at pthread_create.c:309 #5 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 14 (Thread 0x7f8abe407700 (LWP 2699)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 #1 0x0000000001007d03 in os_event::timed_wait(timespec const*) () #2 0x0000000001007f61 in os_event::wait_time_low(unsigned long, long) () #3 0x0000000000fd4b17 in lock_wait_timeout_thread () #4 0x00007f8af011f064 in start_thread (arg=0x7f8abe407700) at pthread_create.c:309 #5 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 13 (Thread 0x7f8ab7abb700 (LWP 2700)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 #1 0x0000000001007d03 in os_event::timed_wait(timespec const*) () #2 0x0000000001007f61 in os_event::wait_time_low(unsigned long, long) () #3 0x00000000010b89d2 in srv_error_monitor_thread () #4 0x00007f8af011f064 in start_thread (arg=0x7f8ab7abb700) at pthread_create.c:309 #5 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 12 (Thread 0x7f8ab72ba700 (LWP 2701)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 #1 0x0000000001007d03 in os_event::timed_wait(timespec const*) () #2 0x0000000001007f61 in os_event::wait_time_low(unsigned long, long) () #3 0x00000000010b40d1 in srv_monitor_thread () #4 0x00007f8af011f064 in start_thread (arg=0x7f8ab72ba700) at pthread_create.c:309 #5 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 11 (Thread 0x7f8ab6ab9700 (LWP 2702)): #0 0x00007f8af012614d in nanosleep () at ../sysdeps/unix/syscall-template.S:81 #1 0x0000000001008370 in os_thread_sleep(unsigned long) () #2 0x00000000010b7ff3 in srv_master_thread () #3 0x00007f8af011f064 in start_thread (arg=0x7f8ab6ab9700) at pthread_create.c:309 #4 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 ---Type to continue, or q to quit--- Thread 10 (Thread 0x7f8ab62b8700 (LWP 2703)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x0000000001007e36 in os_event::wait_low(long) () #2 0x00000000010b6cac in srv_purge_coordinator_thread () #3 0x00007f8af011f064 in start_thread (arg=0x7f8ab62b8700) at pthread_create.c:309 #4 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 9 (Thread 0x7f8ab5ab7700 (LWP 2704)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x0000000001007e36 in os_event::wait_low(long) () #2 0x00000000010b4f35 in srv_worker_thread () #3 0x00007f8af011f064 in start_thread (arg=0x7f8ab5ab7700) at pthread_create.c:309 #4 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 8 (Thread 0x7f8ab52b6700 (LWP 2705)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x0000000001007e36 in os_event::wait_low(long) () #2 0x00000000010b4f35 in srv_worker_thread () #3 0x00007f8af011f064 in start_thread (arg=0x7f8ab52b6700) at pthread_create.c:309 #4 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 7 (Thread 0x7f8ab4ab5700 (LWP 2706)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x0000000001007e36 in os_event::wait_low(long) () #2 0x00000000010b4f35 in srv_worker_thread () #3 0x00007f8af011f064 in start_thread (arg=0x7f8ab4ab5700) at pthread_create.c:309 #4 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 6 (Thread 0x7f8a9ffff700 (LWP 2707)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x0000000001007e36 in os_event::wait_low(long) () #2 0x0000000001165f5c in buf_dump_thread () #3 0x00007f8af011f064 in start_thread (arg=0x7f8a9ffff700) at pthread_create.c:309 #4 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 5 (Thread 0x7f8a9f7fe700 (LWP 2708)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 #1 0x0000000001007d03 in os_event::timed_wait(timespec const*) () #2 0x0000000001007f61 in os_event::wait_time_low(unsigned long, long) () #3 0x00000000011c0dda in dict_stats_thread () #4 0x00007f8af011f064 in start_thread (arg=0x7f8a9f7fe700) at pthread_create.c:309 #5 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 4 (Thread 0x7f8a9effd700 (LWP 2709)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 #1 0x0000000001007d03 in os_event::timed_wait(timespec const*) () #2 0x0000000001007f61 in os_event::wait_time_low(unsigned long, long) () #3 0x000000000111555b in ib_wqueue_timedwait(ib_wqueue_t*, long) () #4 0x0000000001216872 in fts_optimize_thread(void*) () ---Type to continue, or q to quit--- #5 0x00007f8af011f064 in start_thread (arg=0x7f8a9effd700) at pthread_create.c:309 #6 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 3 (Thread 0x7f8a9e7fc700 (LWP 2710)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x0000000001007e36 in os_event::wait_low(long) () #2 0x000000000115ac32 in buf_resize_thread () #3 0x00007f8af011f064 in start_thread (arg=0x7f8a9e7fc700) at pthread_create.c:309 #4 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 2 (Thread 0x7f8abdc06700 (LWP 2711)): #0 __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135 #1 0x00007f8af01214af in _L_lock_1081 () from /lib/x86_64-linux-gnu/libpthread.so.0 #2 0x00007f8af0121428 in __GI___pthread_mutex_lock (mutex=0x7f8a9c917e20) at ../nptl/pthread_mutex_lock.c:134 #3 0x00007f8a9bb97388 in Delayed_initialization_thread::initialization_thread_handler() () from /usr/lib/mysql/plugin/group_replication.so #4 0x00007f8a9bb973d9 in ?? () from /usr/lib/mysql/plugin/group_replication.so #5 0x00007f8af011f064 in start_thread (arg=0x7f8abdc06700) at pthread_create.c:309 #6 0x00007f8aeebe262d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Thread 1 (Thread 0x7f8af0545740 (LWP 2686)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007f8a9bb96c54 in Delayed_initialization_thread::wait_for_thread_end() () from /usr/lib/mysql/plugin/group_replication.so #2 0x00007f8a9bbb2531 in plugin_group_replication_stop() () from /usr/lib/mysql/plugin/group_replication.so #3 0x0000000000db832a in Group_replication_handler::~Group_replication_handler() () #4 0x0000000000db872b in group_replication_cleanup() () #5 0x00007f8a9bbac42a in plugin_group_replication_deinit(void*) () from /usr/lib/mysql/plugin/group_replication.so #6 0x0000000000c7fbfa in ?? () #7 0x0000000000c817a1 in plugin_shutdown() () #8 0x00000000007a15e9 in ?? () #9 0x00000000007a1ce6 in unireg_abort () #10 0x00000000007a7583 in mysqld_main(int, char**) () #11 0x00007f8aeeb1bb45 in __libc_start_main (main=0x783bb0
, argc=2, argv=0x7ffd554ea7a8, init=, fini=, rtld_fini=, stack_end=0x7ffd554ea798) at libc-start.c:287 #12 0x000000000079c384 in _start () (gdb) Quit