[New LWP 18101]
[New LWP 18102]
[New LWP 18077]
[New LWP 18098]
[New LWP 18071]
[New LWP 18079]
[New LWP 18106]
[New LWP 18080]
[New LWP 18107]
[New LWP 18067]
[New LWP 18095]
[New LWP 18073]
[New LWP 18099]
[New LWP 18092]
[New LWP 18094]
[New LWP 18093]
[New LWP 18103]
[New LWP 18096]
[New LWP 18110]
[New LWP 18105]
[New LWP 18074]
[New LWP 18072]
[New LWP 18076]
[New LWP 18104]
[New LWP 18069]
[New LWP 18070]
[New LWP 18075]
[New LWP 18097]
[New LWP 18078]
[New LWP 18100]
[New LWP 18081]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/data/bld/10.2/bin/mysqld --no-defaults --basedir=/data/bld/10.2 --datadir=/dat'.
Program terminated with signal SIGABRT, Aborted.
#0  __pthread_kill (threadid=<optimized out>, signo=6) at ../sysdeps/unix/sysv/linux/pthread_kill.c:57

Thread 31 (Thread 0x7f79a2998700 (LWP 18081)):
#0  0x00007f79cdd806ed in fsync () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000563b59e08650 in os_file_fsync_posix (file=6) at /data/src/10.2/storage/innobase/os/os0file.cc:2473
#2  0x0000563b59e089a0 in os_file_flush_func (file=6) at /data/src/10.2/storage/innobase/os/os0file.cc:2574
#3  0x0000563b5a043dda in pfs_os_file_flush_func (file=..., src_file=0x563b5a4c0db8 "/data/src/10.2/storage/innobase/fil/fil0fil.cc", src_line=971) at /data/src/10.2/storage/innobase/include/os0file.ic:496
#4  0x0000563b5a047069 in fil_flush_low (space=0x563b5d469530) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:971
#5  0x0000563b5a0541f9 in fil_flush (space_id=0) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5330
#6  0x0000563b59fd4d89 in buf_dblwr_flush_buffered_writes () at /data/src/10.2/storage/innobase/buf/buf0dblwr.cc:1058
#7  0x0000563b59fdec11 in buf_flush_end (buf_pool=0x563b5c9a7430, flush_type=BUF_FLUSH_LIST) at /data/src/10.2/storage/innobase/buf/buf0flu.cc:1983
#8  0x0000563b59fdeda7 in buf_flush_do_batch (buf_pool=0x563b5c9a7430, type=BUF_FLUSH_LIST, min_n=200, lsn_limit=18446744073709551615, n=0x7f79a2997cb0) at /data/src/10.2/storage/innobase/buf/buf0flu.cc:2052
#9  0x0000563b59fdf07b in buf_flush_lists (min_n=200, lsn_limit=18446744073709551615, n_processed=0x7f79a2997d10) at /data/src/10.2/storage/innobase/buf/buf0flu.cc:2160
#10 0x0000563b59fe2c14 in buf_flush_page_cleaner_coordinator () at /data/src/10.2/storage/innobase/buf/buf0flu.cc:3324
#11 0x00007f79cdd77494 in start_thread (arg=0x7f79a2998700) at pthread_create.c:333
#12 0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 30 (Thread 0x7f7989ffb700 (LWP 18100)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000563b59e14278 in os_event::wait (this=0x563b5c81e600) at /data/src/10.2/storage/innobase/os/os0event.cc:166
#2  0x0000563b59e13c87 in os_event::wait_low (this=0x563b5c81e600, reset_sig_count=2) at /data/src/10.2/storage/innobase/os/os0event.cc:336
#3  0x0000563b59e1402d in os_event_wait_low (event=0x563b5c81e600, reset_sig_count=0) at /data/src/10.2/storage/innobase/os/os0event.cc:535
#4  0x0000563b59efb0f1 in srv_resume_thread (slot=0x563b5ab928c0 <srv_sys+384>, sig_count=0, wait=true, timeout_usec=0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:930
#5  0x0000563b59efebba in srv_worker_thread (arg=0x0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2580
#6  0x00007f79cdd77494 in start_thread (arg=0x7f7989ffb700) at pthread_create.c:333
#7  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 29 (Thread 0x7f79a419b700 (LWP 18078)):
#0  0x00007f79cdb6e6ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000563b59e06fec in LinuxAIOHandler::collect (this=0x7f79a419ac40) at /data/src/10.2/storage/innobase/os/os0file.cc:1930
#2  0x0000563b59e074fa in LinuxAIOHandler::poll (this=0x7f79a419ac40, m1=0x7f79a419ace8, m2=0x7f79a419acf0, request=0x7f79a419ad20) at /data/src/10.2/storage/innobase/os/os0file.cc:2075
#3  0x0000563b59e0765a in os_aio_linux_handler (global_segment=7, m1=0x7f79a419ace8, m2=0x7f79a419acf0, request=0x7f79a419ad20) at /data/src/10.2/storage/innobase/os/os0file.cc:2129
#4  0x0000563b59e0c05f in os_aio_handler (segment=7, m1=0x7f79a419ace8, m2=0x7f79a419acf0, request=0x7f79a419ad20) at /data/src/10.2/storage/innobase/os/os0file.cc:5732
#5  0x0000563b5a053d7b in fil_aio_wait (segment=7) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5244
#6  0x0000563b59f01c8d in io_handler_thread (arg=0x563b5b5d1478 <n+56>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f79cdd77494 in start_thread (arg=0x7f79a419b700) at pthread_create.c:333
#8  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 28 (Thread 0x7f798b7fe700 (LWP 18097)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000563b59e13b1d in os_event::timed_wait (this=0x563b5d151e20, abstime=0x7f798b7fdca0) at /data/src/10.2/storage/innobase/os/os0event.cc:286
#2  0x0000563b59e13e27 in os_event::wait_time_low (this=0x563b5d151e20, time_in_usec=5000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:413
#3  0x0000563b59e14008 in os_event_wait_time_low (event=0x563b5d151e20, time_in_usec=5000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:518
#4  0x0000563b59f6588f in ib_wqueue_timedwait (wq=0x563b5d151ce0, wait_in_usecs=5000000) at /data/src/10.2/storage/innobase/ut/ut0wqueue.cc:163
#5  0x0000563b5a0983fb in fts_optimize_thread (arg=0x563b5d151ce0) at /data/src/10.2/storage/innobase/fts/fts0opt.cc:2899
#6  0x00007f79cdd77494 in start_thread (arg=0x7f798b7fe700) at pthread_create.c:333
#7  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 27 (Thread 0x7f79a599e700 (LWP 18075)):
#0  0x00007f79cdb6e6ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000563b59e06fec in LinuxAIOHandler::collect (this=0x7f79a599dc40) at /data/src/10.2/storage/innobase/os/os0file.cc:1930
#2  0x0000563b59e074fa in LinuxAIOHandler::poll (this=0x7f79a599dc40, m1=0x7f79a599dce8, m2=0x7f79a599dcf0, request=0x7f79a599dd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2075
#3  0x0000563b59e0765a in os_aio_linux_handler (global_segment=4, m1=0x7f79a599dce8, m2=0x7f79a599dcf0, request=0x7f79a599dd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2129
#4  0x0000563b59e0c05f in os_aio_handler (segment=4, m1=0x7f79a599dce8, m2=0x7f79a599dcf0, request=0x7f79a599dd20) at /data/src/10.2/storage/innobase/os/os0file.cc:5732
#5  0x0000563b5a053d7b in fil_aio_wait (segment=4) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5244
#6  0x0000563b59f01c8d in io_handler_thread (arg=0x563b5b5d1460 <n+32>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f79cdd77494 in start_thread (arg=0x7f79a599e700) at pthread_create.c:333
#8  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 26 (Thread 0x7f79c98b0700 (LWP 18070)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000563b5a1a3d56 in safe_cond_timedwait (cond=0x563b5b585f00 <COND_checkpoint>, mp=0x563b5b585e40 <LOCK_checkpoint>, abstime=0x7f79c98afe50, file=0x563b5a379f70 "/data/src/10.2/include/mysql/psi/mysql_thread.h", line=1186) at /data/src/10.2/mysys/thr_mutex.c:545
#2  0x0000563b59c87c24 in inline_mysql_cond_timedwait (that=0x563b5b585f00 <COND_checkpoint>, mutex=0x563b5b585e40 <LOCK_checkpoint>, abstime=0x7f79c98afe50, src_file=0x563b5a379fa0 "/data/src/10.2/storage/maria/ma_servicethread.c", src_line=116) at /data/src/10.2/include/mysql/psi/mysql_thread.h:1186
#3  0x0000563b59c880d6 in my_service_thread_sleep (control=0x563b5ab808c0 <checkpoint_control>, sleep_time=29000000000) at /data/src/10.2/storage/maria/ma_servicethread.c:115
#4  0x0000563b59c7cc50 in ma_checkpoint_background (arg=0x1e) at /data/src/10.2/storage/maria/ma_checkpoint.c:709
#5  0x00007f79cdd77494 in start_thread (arg=0x7f79c98b0700) at pthread_create.c:333
#6  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 25 (Thread 0x7f79cbf78700 (LWP 18069)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000563b5a1a3d56 in safe_cond_timedwait (cond=0x563b5b5ea440 <COND_timer>, mp=0x563b5b5ea380 <LOCK_timer>, abstime=0x7f79cbf77f00, file=0x563b5a514710 "/data/src/10.2/include/mysql/psi/mysql_thread.h", line=1186) at /data/src/10.2/mysys/thr_mutex.c:545
#2  0x0000563b5a1a4d17 in inline_mysql_cond_timedwait (that=0x563b5b5ea440 <COND_timer>, mutex=0x563b5b5ea380 <LOCK_timer>, abstime=0x7f79cbf77f00, src_file=0x563b5a514740 "/data/src/10.2/mysys/thr_timer.c", src_line=292) at /data/src/10.2/include/mysql/psi/mysql_thread.h:1186
#3  0x0000563b5a1a57ce in timer_handler (arg=0x0) at /data/src/10.2/mysys/thr_timer.c:292
#4  0x00007f79cdd77494 in start_thread (arg=0x7f79cbf78700) at pthread_create.c:333
#5  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 24 (Thread 0x7f79737fe700 (LWP 18104)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000563b59e14278 in os_event::wait (this=0x563b5c81e980) at /data/src/10.2/storage/innobase/os/os0event.cc:166
#2  0x0000563b59e13c87 in os_event::wait_low (this=0x563b5c81e980, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:336
#3  0x0000563b59e1402d in os_event_wait_low (event=0x563b5c81e980, reset_sig_count=0) at /data/src/10.2/storage/innobase/os/os0event.cc:535
#4  0x0000563b59fc1a26 in buf_resize_thread () at /data/src/10.2/storage/innobase/buf/buf0buf.cc:3214
#5  0x00007f79cdd77494 in start_thread (arg=0x7f79737fe700) at pthread_create.c:333
#6  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 23 (Thread 0x7f79a519d700 (LWP 18076)):
#0  0x00007f79cdb6e6ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000563b59e06fec in LinuxAIOHandler::collect (this=0x7f79a519cc40) at /data/src/10.2/storage/innobase/os/os0file.cc:1930
#2  0x0000563b59e074fa in LinuxAIOHandler::poll (this=0x7f79a519cc40, m1=0x7f79a519cce8, m2=0x7f79a519ccf0, request=0x7f79a519cd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2075
#3  0x0000563b59e0765a in os_aio_linux_handler (global_segment=5, m1=0x7f79a519cce8, m2=0x7f79a519ccf0, request=0x7f79a519cd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2129
#4  0x0000563b59e0c05f in os_aio_handler (segment=5, m1=0x7f79a519cce8, m2=0x7f79a519ccf0, request=0x7f79a519cd20) at /data/src/10.2/storage/innobase/os/os0file.cc:5732
#5  0x0000563b5a053d7b in fil_aio_wait (segment=5) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5244
#6  0x0000563b59f01c8d in io_handler_thread (arg=0x563b5b5d1468 <n+40>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f79cdd77494 in start_thread (arg=0x7f79a519d700) at pthread_create.c:333
#8  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 22 (Thread 0x7f79b5cdd700 (LWP 18072)):
#0  0x00007f79cdb6e6ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000563b59e06fec in LinuxAIOHandler::collect (this=0x7f79b5cdcc40) at /data/src/10.2/storage/innobase/os/os0file.cc:1930
#2  0x0000563b59e074fa in LinuxAIOHandler::poll (this=0x7f79b5cdcc40, m1=0x7f79b5cdcce8, m2=0x7f79b5cdccf0, request=0x7f79b5cdcd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2075
#3  0x0000563b59e0765a in os_aio_linux_handler (global_segment=1, m1=0x7f79b5cdcce8, m2=0x7f79b5cdccf0, request=0x7f79b5cdcd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2129
#4  0x0000563b59e0c05f in os_aio_handler (segment=1, m1=0x7f79b5cdcce8, m2=0x7f79b5cdccf0, request=0x7f79b5cdcd20) at /data/src/10.2/storage/innobase/os/os0file.cc:5732
#5  0x0000563b5a053d7b in fil_aio_wait (segment=1) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5244
#6  0x0000563b59f01c8d in io_handler_thread (arg=0x563b5b5d1448 <n+8>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f79cdd77494 in start_thread (arg=0x7f79b5cdd700) at pthread_create.c:333
#8  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 21 (Thread 0x7f79b4cdb700 (LWP 18074)):
#0  0x00007f79cdb6e6ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000563b59e06fec in LinuxAIOHandler::collect (this=0x7f79b4cdac40) at /data/src/10.2/storage/innobase/os/os0file.cc:1930
#2  0x0000563b59e074fa in LinuxAIOHandler::poll (this=0x7f79b4cdac40, m1=0x7f79b4cdace8, m2=0x7f79b4cdacf0, request=0x7f79b4cdad20) at /data/src/10.2/storage/innobase/os/os0file.cc:2075
#3  0x0000563b59e0765a in os_aio_linux_handler (global_segment=3, m1=0x7f79b4cdace8, m2=0x7f79b4cdacf0, request=0x7f79b4cdad20) at /data/src/10.2/storage/innobase/os/os0file.cc:2129
#4  0x0000563b59e0c05f in os_aio_handler (segment=3, m1=0x7f79b4cdace8, m2=0x7f79b4cdacf0, request=0x7f79b4cdad20) at /data/src/10.2/storage/innobase/os/os0file.cc:5732
#5  0x0000563b5a053d7b in fil_aio_wait (segment=3) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5244
#6  0x0000563b59f01c8d in io_handler_thread (arg=0x563b5b5d1458 <n+24>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f79cdd77494 in start_thread (arg=0x7f79b4cdb700) at pthread_create.c:333
#8  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 20 (Thread 0x7f7972ffd700 (LWP 18105)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000563b5a1a3a4c in safe_cond_wait (cond=0x7f7972ffce10, mp=0x7f7972ffce50, file=0x563b5a3a04c0 "/data/src/10.2/include/mysql/psi/mysql_thread.h", line=1149) at /data/src/10.2/mysys/thr_mutex.c:491
#2  0x0000563b59d47fd5 in inline_mysql_cond_wait (that=0x7f7972ffce10, mutex=0x7f7972ffce50, src_file=0x563b5a3a1a80 "/data/src/10.2/storage/innobase/handler/ha_innodb.cc", src_line=338) at /data/src/10.2/include/mysql/psi/mysql_thread.h:1149
#3  0x0000563b59d4c6c3 in thd_destructor_proxy () at /data/src/10.2/storage/innobase/handler/ha_innodb.cc:338
#4  0x00007f79cdd77494 in start_thread (arg=0x7f7972ffd700) at pthread_create.c:333
#5  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 19 (Thread 0x7f79c8c1a700 (LWP 18110)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000563b5a1a3d56 in safe_cond_timedwait (cond=0x563b5ad4ffa0 <COND_thread_cache>, mp=0x563b5ad52840 <LOCK_thread_cache>, abstime=0x7f79c8c19df0, file=0x563b5a2333c0 "/data/src/10.2/include/mysql/psi/mysql_thread.h", line=1186) at /data/src/10.2/mysys/thr_mutex.c:545
#2  0x0000563b596e2e89 in inline_mysql_cond_timedwait (that=0x563b5ad4ffa0 <COND_thread_cache>, mutex=0x563b5ad52840 <LOCK_thread_cache>, abstime=0x7f79c8c19df0, src_file=0x563b5a23512a "/data/src/10.2/sql/mysqld.cc", src_line=2973) at /data/src/10.2/include/mysql/psi/mysql_thread.h:1186
#3  0x0000563b596e7f5c in cache_thread (thd=0x7f7950000b00) at /data/src/10.2/sql/mysqld.cc:2972
#4  0x0000563b596e8200 in one_thread_per_connection_end (thd=0x7f7950000b00, put_in_cache=true) at /data/src/10.2/sql/mysqld.cc:3061
#5  0x0000563b59916c4f in do_handle_one_connection (connect=0x563b5c7dd050) at /data/src/10.2/sql/sql_connect.cc:1354
#6  0x0000563b599168f3 in handle_one_connection (arg=0x563b5c7dd050) at /data/src/10.2/sql/sql_connect.cc:1241
#7  0x00007f79cdd77494 in start_thread (arg=0x7f79c8c1a700) at pthread_create.c:333
#8  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 18 (Thread 0x7f798bfff700 (LWP 18096)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000563b59e13b1d in os_event::timed_wait (this=0x563b5d46b830, abstime=0x7f798bffeea0) at /data/src/10.2/storage/innobase/os/os0event.cc:286
#2  0x0000563b59e13e27 in os_event::wait_time_low (this=0x563b5d46b830, time_in_usec=10000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:413
#3  0x0000563b59e14008 in os_event_wait_time_low (event=0x563b5d46b830, time_in_usec=10000000, reset_sig_count=0) at /data/src/10.2/storage/innobase/os/os0event.cc:518
#4  0x0000563b5a03be18 in dict_stats_thread () at /data/src/10.2/storage/innobase/dict/dict0stats_bg.cc:460
#5  0x00007f79cdd77494 in start_thread (arg=0x7f798bfff700) at pthread_create.c:333
#6  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 17 (Thread 0x7f7973fff700 (LWP 18103)):
#0  0x00007f79cdd807dd in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000563b59e14593 in os_thread_sleep (tm=1000000) at /data/src/10.2/storage/innobase/os/os0thread.cc:230
#2  0x0000563b59fb4279 in btr_defragment_thread () at /data/src/10.2/storage/innobase/btr/btr0defragment.cc:709
#3  0x00007f79cdd77494 in start_thread (arg=0x7f7973fff700) at pthread_create.c:333
#4  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 16 (Thread 0x7f79a1996700 (LWP 18093)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000563b59e13b1d in os_event::timed_wait (this=0x563b5c81e780, abstime=0x7f79a1995ce0) at /data/src/10.2/storage/innobase/os/os0event.cc:286
#2  0x0000563b59e13e27 in os_event::wait_time_low (this=0x563b5c81e780, time_in_usec=1000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:413
#3  0x0000563b59e14008 in os_event_wait_time_low (event=0x563b5c81e780, time_in_usec=1000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:518
#4  0x0000563b59efd33c in srv_error_monitor_thread () at /data/src/10.2/storage/innobase/srv/srv0srv.cc:1896
#5  0x00007f79cdd77494 in start_thread (arg=0x7f79a1996700) at pthread_create.c:333
#6  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 15 (Thread 0x7f79a1195700 (LWP 18094)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000563b59e13b1d in os_event::timed_wait (this=0x563b5c81e800, abstime=0x7f79a1194e60) at /data/src/10.2/storage/innobase/os/os0event.cc:286
#2  0x0000563b59e13e27 in os_event::wait_time_low (this=0x563b5c81e800, time_in_usec=5000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:413
#3  0x0000563b59e14008 in os_event_wait_time_low (event=0x563b5c81e800, time_in_usec=5000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:518
#4  0x0000563b59efce31 in srv_monitor_thread () at /data/src/10.2/storage/innobase/srv/srv0srv.cc:1732
#5  0x00007f79cdd77494 in start_thread (arg=0x7f79a1195700) at pthread_create.c:333
#6  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 14 (Thread 0x7f79a2197700 (LWP 18092)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000563b59e13b1d in os_event::timed_wait (this=0x563b5d3544c0, abstime=0x7f79a2196e80) at /data/src/10.2/storage/innobase/os/os0event.cc:286
#2  0x0000563b59e13e27 in os_event::wait_time_low (this=0x563b5d3544c0, time_in_usec=1000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:413
#3  0x0000563b59e14008 in os_event_wait_time_low (event=0x563b5d3544c0, time_in_usec=1000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:518
#4  0x0000563b59de2ac9 in lock_wait_timeout_thread () at /data/src/10.2/storage/innobase/lock/lock0wait.cc:547
#5  0x00007f79cdd77494 in start_thread (arg=0x7f79a2197700) at pthread_create.c:333
#6  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 13 (Thread 0x7f798a7fc700 (LWP 18099)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000563b59e14278 in os_event::wait (this=0x563b5c81e680) at /data/src/10.2/storage/innobase/os/os0event.cc:166
#2  0x0000563b59e13c87 in os_event::wait_low (this=0x563b5c81e680, reset_sig_count=2) at /data/src/10.2/storage/innobase/os/os0event.cc:336
#3  0x0000563b59e1402d in os_event_wait_low (event=0x563b5c81e680, reset_sig_count=0) at /data/src/10.2/storage/innobase/os/os0event.cc:535
#4  0x0000563b59efb0f1 in srv_resume_thread (slot=0x563b5ab928f8 <srv_sys+440>, sig_count=0, wait=true, timeout_usec=0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:930
#5  0x0000563b59efebba in srv_worker_thread (arg=0x0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2580
#6  0x00007f79cdd77494 in start_thread (arg=0x7f798a7fc700) at pthread_create.c:333
#7  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 12 (Thread 0x7f79b54dc700 (LWP 18073)):
#0  0x00007f79cdb6e6ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000563b59e06fec in LinuxAIOHandler::collect (this=0x7f79b54dbc40) at /data/src/10.2/storage/innobase/os/os0file.cc:1930
#2  0x0000563b59e074fa in LinuxAIOHandler::poll (this=0x7f79b54dbc40, m1=0x7f79b54dbce8, m2=0x7f79b54dbcf0, request=0x7f79b54dbd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2075
#3  0x0000563b59e0765a in os_aio_linux_handler (global_segment=2, m1=0x7f79b54dbce8, m2=0x7f79b54dbcf0, request=0x7f79b54dbd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2129
#4  0x0000563b59e0c05f in os_aio_handler (segment=2, m1=0x7f79b54dbce8, m2=0x7f79b54dbcf0, request=0x7f79b54dbd20) at /data/src/10.2/storage/innobase/os/os0file.cc:5732
#5  0x0000563b5a053d7b in fil_aio_wait (segment=2) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5244
#6  0x0000563b59f01c8d in io_handler_thread (arg=0x563b5b5d1450 <n+16>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f79cdd77494 in start_thread (arg=0x7f79b54dc700) at pthread_create.c:333
#8  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 11 (Thread 0x7f79a0994700 (LWP 18095)):
#0  0x00007f79cdd807dd in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000563b59e14593 in os_thread_sleep (tm=1000000) at /data/src/10.2/storage/innobase/os/os0thread.cc:230
#2  0x0000563b59efe5d5 in srv_master_sleep () at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2385
#3  0x0000563b59efe6f5 in srv_master_thread (arg=0x0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2426
#4  0x00007f79cdd77494 in start_thread (arg=0x7f79a0994700) at pthread_create.c:333
#5  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 10 (Thread 0x7f79ce190b80 (LWP 18067)):
#0  0x00007f79cc1544ed in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x0000563b596eed0d in handle_connections_sockets () at /data/src/10.2/sql/mysqld.cc:6609
#2  0x0000563b596edffc in mysqld_main (argc=12, argv=0x563b5c6b37e8) at /data/src/10.2/sql/mysqld.cc:6075
#3  0x0000563b596e25f0 in main (argc=12, argv=0x7ffff753b878) at /data/src/10.2/sql/main.cc:25

Thread 9 (Thread 0x7f79c8c64700 (LWP 18107)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000563b5a1a3a4c in safe_cond_wait (cond=0x563b5ad4ffe0 <COND_slave_background>, mp=0x563b5ad532c0 <LOCK_slave_background>, file=0x563b5a241340 "/data/src/10.2/include/mysql/psi/mysql_thread.h", line=1149) at /data/src/10.2/mysys/thr_mutex.c:491
#2  0x0000563b59711d24 in inline_mysql_cond_wait (that=0x563b5ad4ffe0 <COND_slave_background>, mutex=0x563b5ad532c0 <LOCK_slave_background>, src_file=0x563b5a241afd "/data/src/10.2/sql/slave.cc", src_line=334) at /data/src/10.2/include/mysql/psi/mysql_thread.h:1149
#3  0x0000563b5971290e in handle_slave_background (arg=0x0) at /data/src/10.2/sql/slave.cc:334
#4  0x00007f79cdd77494 in start_thread (arg=0x7f79c8c64700) at pthread_create.c:333
#5  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 8 (Thread 0x7f79a3199700 (LWP 18080)):
#0  0x00007f79cdb6e6ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000563b59e06fec in LinuxAIOHandler::collect (this=0x7f79a3198c40) at /data/src/10.2/storage/innobase/os/os0file.cc:1930
#2  0x0000563b59e074fa in LinuxAIOHandler::poll (this=0x7f79a3198c40, m1=0x7f79a3198ce8, m2=0x7f79a3198cf0, request=0x7f79a3198d20) at /data/src/10.2/storage/innobase/os/os0file.cc:2075
#3  0x0000563b59e0765a in os_aio_linux_handler (global_segment=9, m1=0x7f79a3198ce8, m2=0x7f79a3198cf0, request=0x7f79a3198d20) at /data/src/10.2/storage/innobase/os/os0file.cc:2129
#4  0x0000563b59e0c05f in os_aio_handler (segment=9, m1=0x7f79a3198ce8, m2=0x7f79a3198cf0, request=0x7f79a3198d20) at /data/src/10.2/storage/innobase/os/os0file.cc:5732
#5  0x0000563b5a053d7b in fil_aio_wait (segment=9) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5244
#6  0x0000563b59f01c8d in io_handler_thread (arg=0x563b5b5d1488 <n+72>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f79cdd77494 in start_thread (arg=0x7f79a3199700) at pthread_create.c:333
#8  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 7 (Thread 0x7f79c8cae700 (LWP 18106)):
#0  do_sigwait (set=<optimized out>, set@entry=0x7f79c8cade80, sig=sig@entry=0x7f79c8cade50) at ../sysdeps/unix/sysv/linux/sigwait.c:64
#1  0x00007f79cdd80ced in __sigwait (set=0x7f79c8cade80, sig=0x7f79c8cade50) at ../sysdeps/unix/sysv/linux/sigwait.c:96
#2  0x0000563b596e8ecb in signal_hand (arg=0x0) at /data/src/10.2/sql/mysqld.cc:3510
#3  0x00007f79cdd77494 in start_thread (arg=0x7f79c8cae700) at pthread_create.c:333
#4  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 6 (Thread 0x7f79a399a700 (LWP 18079)):
#0  0x00007f79cdb6e6ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000563b59e06fec in LinuxAIOHandler::collect (this=0x7f79a3999c40) at /data/src/10.2/storage/innobase/os/os0file.cc:1930
#2  0x0000563b59e074fa in LinuxAIOHandler::poll (this=0x7f79a3999c40, m1=0x7f79a3999ce8, m2=0x7f79a3999cf0, request=0x7f79a3999d20) at /data/src/10.2/storage/innobase/os/os0file.cc:2075
#3  0x0000563b59e0765a in os_aio_linux_handler (global_segment=8, m1=0x7f79a3999ce8, m2=0x7f79a3999cf0, request=0x7f79a3999d20) at /data/src/10.2/storage/innobase/os/os0file.cc:2129
#4  0x0000563b59e0c05f in os_aio_handler (segment=8, m1=0x7f79a3999ce8, m2=0x7f79a3999cf0, request=0x7f79a3999d20) at /data/src/10.2/storage/innobase/os/os0file.cc:5732
#5  0x0000563b5a053d7b in fil_aio_wait (segment=8) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5244
#6  0x0000563b59f01c8d in io_handler_thread (arg=0x563b5b5d1480 <n+64>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f79cdd77494 in start_thread (arg=0x7f79a399a700) at pthread_create.c:333
#8  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 5 (Thread 0x7f79c8a91700 (LWP 18071)):
#0  0x00007f79cdb6e6ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000563b59e06fec in LinuxAIOHandler::collect (this=0x7f79c8a90c40) at /data/src/10.2/storage/innobase/os/os0file.cc:1930
#2  0x0000563b59e074fa in LinuxAIOHandler::poll (this=0x7f79c8a90c40, m1=0x7f79c8a90ce8, m2=0x7f79c8a90cf0, request=0x7f79c8a90d20) at /data/src/10.2/storage/innobase/os/os0file.cc:2075
#3  0x0000563b59e0765a in os_aio_linux_handler (global_segment=0, m1=0x7f79c8a90ce8, m2=0x7f79c8a90cf0, request=0x7f79c8a90d20) at /data/src/10.2/storage/innobase/os/os0file.cc:2129
#4  0x0000563b59e0c05f in os_aio_handler (segment=0, m1=0x7f79c8a90ce8, m2=0x7f79c8a90cf0, request=0x7f79c8a90d20) at /data/src/10.2/storage/innobase/os/os0file.cc:5732
#5  0x0000563b5a053d7b in fil_aio_wait (segment=0) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5244
#6  0x0000563b59f01c8d in io_handler_thread (arg=0x563b5b5d1440 <n>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f79cdd77494 in start_thread (arg=0x7f79c8a91700) at pthread_create.c:333
#8  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 4 (Thread 0x7f798affd700 (LWP 18098)):
#0  0x00007f79cc146ae7 in sched_yield () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x0000563b59e14525 in os_thread_yield () at /data/src/10.2/storage/innobase/os/os0thread.cc:211
#2  0x0000563b59f2d295 in trx_purge_wait_for_workers_to_complete (purge_sys=0x563b5d747690) at /data/src/10.2/storage/innobase/trx/trx0purge.cc:1614
#3  0x0000563b59f2d5d8 in trx_purge (n_purge_threads=4, batch_size=300, truncate=false) at /data/src/10.2/storage/innobase/trx/trx0purge.cc:1696
#4  0x0000563b59efeef9 in srv_do_purge (n_total_purged=0x7f798affced0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2688
#5  0x0000563b59eff462 in srv_purge_coordinator_thread (arg=0x0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2830
#6  0x00007f79cdd77494 in start_thread (arg=0x7f798affd700) at pthread_create.c:333
#7  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 3 (Thread 0x7f79a499c700 (LWP 18077)):
#0  0x00007f79cdb6e6ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000563b59e06fec in LinuxAIOHandler::collect (this=0x7f79a499bc40) at /data/src/10.2/storage/innobase/os/os0file.cc:1930
#2  0x0000563b59e074fa in LinuxAIOHandler::poll (this=0x7f79a499bc40, m1=0x7f79a499bce8, m2=0x7f79a499bcf0, request=0x7f79a499bd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2075
#3  0x0000563b59e0765a in os_aio_linux_handler (global_segment=6, m1=0x7f79a499bce8, m2=0x7f79a499bcf0, request=0x7f79a499bd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2129
#4  0x0000563b59e0c05f in os_aio_handler (segment=6, m1=0x7f79a499bce8, m2=0x7f79a499bcf0, request=0x7f79a499bd20) at /data/src/10.2/storage/innobase/os/os0file.cc:5732
#5  0x0000563b5a053d7b in fil_aio_wait (segment=6) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5244
#6  0x0000563b59f01c8d in io_handler_thread (arg=0x563b5b5d1470 <n+48>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f79cdd77494 in start_thread (arg=0x7f79a499c700) at pthread_create.c:333
#8  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7f7988ff9700 (LWP 18102)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000563b59e14278 in os_event::wait (this=0x563b5c81e880) at /data/src/10.2/storage/innobase/os/os0event.cc:166
#2  0x0000563b59e13c87 in os_event::wait_low (this=0x563b5c81e880, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:336
#3  0x0000563b59e1402d in os_event_wait_low (event=0x563b5c81e880, reset_sig_count=0) at /data/src/10.2/storage/innobase/os/os0event.cc:535
#4  0x0000563b59fd7fd6 in buf_dump_thread () at /data/src/10.2/storage/innobase/buf/buf0dump.cc:809
#5  0x00007f79cdd77494 in start_thread (arg=0x7f7988ff9700) at pthread_create.c:333
#6  0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7f79897fa700 (LWP 18101)):
#0  __pthread_kill (threadid=<optimized out>, signo=6) at ../sysdeps/unix/sysv/linux/pthread_kill.c:57
#1  0x0000563b5a19e4f9 in my_write_core (sig=6) at /data/src/10.2/mysys/stacktrace.c:477
#2  0x0000563b59a404ba in handle_fatal_signal (sig=6) at /data/src/10.2/sql/signal_handler.cc:305
#3  <signal handler called>
#4  0x00007f79cc0a7fcf in raise () from /lib/x86_64-linux-gnu/libc.so.6
#5  0x00007f79cc0a93fa in abort () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007f79cc0a0e37 in __assert_fail_base () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007f79cc0a0ee2 in __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6
#8  0x0000563b59eb0067 in row_purge_remove_clust_if_poss_low (node=0x563b5d747f00, mode=2) at /data/src/10.2/storage/innobase/row/row0purge.cc:139
#9  0x0000563b59eb03cd in row_purge_remove_clust_if_poss (node=0x563b5d747f00) at /data/src/10.2/storage/innobase/row/row0purge.cc:216
#10 0x0000563b59eb1acf in row_purge_del_mark (node=0x563b5d747f00) at /data/src/10.2/storage/innobase/row/row0purge.cc:799
#11 0x0000563b59eb2656 in row_purge_record_func (node=0x563b5d747f00, undo_rec=0x563b5d7483d8 "\016}\016", thr=0x563b5d747e48, updated_extern=false) at /data/src/10.2/storage/innobase/row/row0purge.cc:1093
#12 0x0000563b59eb28cd in row_purge (node=0x563b5d747f00, undo_rec=0x563b5d7483d8 "\016}\016", thr=0x563b5d747e48) at /data/src/10.2/storage/innobase/row/row0purge.cc:1154
#13 0x0000563b59eb2c0c in row_purge_step (thr=0x563b5d747e48) at /data/src/10.2/storage/innobase/row/row0purge.cc:1240
#14 0x0000563b59e441f7 in que_thr_step (thr=0x563b5d747e48) at /data/src/10.2/storage/innobase/que/que0que.cc:1049
#15 0x0000563b59e443f5 in que_run_threads_low (thr=0x563b5d747e48) at /data/src/10.2/storage/innobase/que/que0que.cc:1111
#16 0x0000563b59e4459e in que_run_threads (thr=0x563b5d747e48) at /data/src/10.2/storage/innobase/que/que0que.cc:1151
#17 0x0000563b59efea71 in srv_task_execute () at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2535
#18 0x0000563b59efebbf in srv_worker_thread (arg=0x0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2582
#19 0x00007f79cdd77494 in start_thread (arg=0x7f79897fa700) at pthread_create.c:333
#20 0x00007f79cc15d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6