[New LWP 2485]
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[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f6e792df4ed in poll () from /lib/x86_64-linux-gnu/libc.so.6

Thread 28 (Thread 0x7f6e75107700 (LWP 2454)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000556ea3cb72e1 in safe_cond_timedwait (cond=0x556ea50fc1c0 <COND_timer>, mp=0x556ea50fc100 <LOCK_timer>, abstime=0x7f6e75106eb0, file=0x556ea4026870 "/data/src/10.2/include/mysql/psi/mysql_thread.h", line=1175) at /data/src/10.2/mysys/thr_mutex.c:545
#2  0x0000556ea3cb8253 in inline_mysql_cond_timedwait (that=0x556ea50fc1c0 <COND_timer>, mutex=0x556ea50fc100 <LOCK_timer>, abstime=0x7f6e75106eb0, src_file=0x556ea40268a0 "/data/src/10.2/mysys/thr_timer.c", src_line=292) at /data/src/10.2/include/mysql/psi/mysql_thread.h:1175
#3  0x0000556ea3cb8d59 in timer_handler (arg=0x0) at /data/src/10.2/mysys/thr_timer.c:292
#4  0x0000556ea384ccc0 in pfs_spawn_thread (arg=0x556ea6bae8b0) at /data/src/10.2/storage/perfschema/pfs.cc:1862
#5  0x00007f6e7af02494 in start_thread (arg=0x7f6e75107700) at pthread_create.c:333
#6  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 27 (Thread 0x7f6e6fd97700 (LWP 2455)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000556ea3cb72e1 in safe_cond_timedwait (cond=0x556ea5097c00 <COND_checkpoint>, mp=0x556ea5097b40 <LOCK_checkpoint>, abstime=0x7f6e6fd96e00, file=0x556ea3e8c7d0 "/data/src/10.2/include/mysql/psi/mysql_thread.h", line=1175) at /data/src/10.2/mysys/thr_mutex.c:545
#2  0x0000556ea3799e48 in inline_mysql_cond_timedwait (that=0x556ea5097c00 <COND_checkpoint>, mutex=0x556ea5097b40 <LOCK_checkpoint>, abstime=0x7f6e6fd96e00, src_file=0x556ea3e8c800 "/data/src/10.2/storage/maria/ma_servicethread.c", src_line=116) at /data/src/10.2/include/mysql/psi/mysql_thread.h:1175
#3  0x0000556ea379a349 in my_service_thread_sleep (control=0x556ea4692880 <checkpoint_control>, sleep_time=29000000000) at /data/src/10.2/storage/maria/ma_servicethread.c:115
#4  0x0000556ea378ef7a in ma_checkpoint_background (arg=0x1e) at /data/src/10.2/storage/maria/ma_checkpoint.c:709
#5  0x0000556ea384ccc0 in pfs_spawn_thread (arg=0x556ea6c86010) at /data/src/10.2/storage/perfschema/pfs.cc:1862
#6  0x00007f6e7af02494 in start_thread (arg=0x7f6e6fd97700) at pthread_create.c:333
#7  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 26 (Thread 0x7f6e6e92d700 (LWP 2456)):
#0  0x00007f6e7acf96ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000556ea3918dfc in LinuxAIOHandler::collect (this=0x7f6e6e92cc40) at /data/src/10.2/storage/innobase/os/os0file.cc:1915
#2  0x0000556ea391930a in LinuxAIOHandler::poll (this=0x7f6e6e92cc40, m1=0x7f6e6e92cce8, m2=0x7f6e6e92ccf0, request=0x7f6e6e92cd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2060
#3  0x0000556ea391946a in os_aio_linux_handler (global_segment=0, m1=0x7f6e6e92cce8, m2=0x7f6e6e92ccf0, request=0x7f6e6e92cd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2114
#4  0x0000556ea391df05 in os_aio_handler (segment=0, m1=0x7f6e6e92cce8, m2=0x7f6e6e92ccf0, request=0x7f6e6e92cd20) at /data/src/10.2/storage/innobase/os/os0file.cc:5692
#5  0x0000556ea3b66754 in fil_aio_wait (segment=0) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5340
#6  0x0000556ea3a13667 in io_handler_thread (arg=0x556ea50e3200 <n>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f6e7af02494 in start_thread (arg=0x7f6e6e92d700) at pthread_create.c:333
#8  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 25 (Thread 0x7f6e6e12c700 (LWP 2457)):
#0  0x00007f6e7acf96ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000556ea3918dfc in LinuxAIOHandler::collect (this=0x7f6e6e12bc40) at /data/src/10.2/storage/innobase/os/os0file.cc:1915
#2  0x0000556ea391930a in LinuxAIOHandler::poll (this=0x7f6e6e12bc40, m1=0x7f6e6e12bce8, m2=0x7f6e6e12bcf0, request=0x7f6e6e12bd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2060
#3  0x0000556ea391946a in os_aio_linux_handler (global_segment=1, m1=0x7f6e6e12bce8, m2=0x7f6e6e12bcf0, request=0x7f6e6e12bd20) at /data/src/10.2/storage/innobase/os/os0file.cc:2114
#4  0x0000556ea391df05 in os_aio_handler (segment=1, m1=0x7f6e6e12bce8, m2=0x7f6e6e12bcf0, request=0x7f6e6e12bd20) at /data/src/10.2/storage/innobase/os/os0file.cc:5692
#5  0x0000556ea3b66754 in fil_aio_wait (segment=1) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5340
#6  0x0000556ea3a13667 in io_handler_thread (arg=0x556ea50e3208 <n+8>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f6e7af02494 in start_thread (arg=0x7f6e6e12c700) at pthread_create.c:333
#8  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 24 (Thread 0x7f6e6d92b700 (LWP 2458)):
#0  0x00007f6e7acf96ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000556ea3918dfc in LinuxAIOHandler::collect (this=0x7f6e6d92ac40) at /data/src/10.2/storage/innobase/os/os0file.cc:1915
#2  0x0000556ea391930a in LinuxAIOHandler::poll (this=0x7f6e6d92ac40, m1=0x7f6e6d92ace8, m2=0x7f6e6d92acf0, request=0x7f6e6d92ad20) at /data/src/10.2/storage/innobase/os/os0file.cc:2060
#3  0x0000556ea391946a in os_aio_linux_handler (global_segment=2, m1=0x7f6e6d92ace8, m2=0x7f6e6d92acf0, request=0x7f6e6d92ad20) at /data/src/10.2/storage/innobase/os/os0file.cc:2114
#4  0x0000556ea391df05 in os_aio_handler (segment=2, m1=0x7f6e6d92ace8, m2=0x7f6e6d92acf0, request=0x7f6e6d92ad20) at /data/src/10.2/storage/innobase/os/os0file.cc:5692
#5  0x0000556ea3b66754 in fil_aio_wait (segment=2) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5340
#6  0x0000556ea3a13667 in io_handler_thread (arg=0x556ea50e3210 <n+16>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f6e7af02494 in start_thread (arg=0x7f6e6d92b700) at pthread_create.c:333
#8  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 23 (Thread 0x7f6e6d12a700 (LWP 2459)):
#0  0x00007f6e7acf96ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000556ea3918dfc in LinuxAIOHandler::collect (this=0x7f6e6d129c40) at /data/src/10.2/storage/innobase/os/os0file.cc:1915
#2  0x0000556ea391930a in LinuxAIOHandler::poll (this=0x7f6e6d129c40, m1=0x7f6e6d129ce8, m2=0x7f6e6d129cf0, request=0x7f6e6d129d20) at /data/src/10.2/storage/innobase/os/os0file.cc:2060
#3  0x0000556ea391946a in os_aio_linux_handler (global_segment=3, m1=0x7f6e6d129ce8, m2=0x7f6e6d129cf0, request=0x7f6e6d129d20) at /data/src/10.2/storage/innobase/os/os0file.cc:2114
#4  0x0000556ea391df05 in os_aio_handler (segment=3, m1=0x7f6e6d129ce8, m2=0x7f6e6d129cf0, request=0x7f6e6d129d20) at /data/src/10.2/storage/innobase/os/os0file.cc:5692
#5  0x0000556ea3b66754 in fil_aio_wait (segment=3) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5340
#6  0x0000556ea3a13667 in io_handler_thread (arg=0x556ea50e3218 <n+24>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f6e7af02494 in start_thread (arg=0x7f6e6d12a700) at pthread_create.c:333
#8  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 22 (Thread 0x7f6e6c929700 (LWP 2460)):
#0  0x00007f6e7acf96ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000556ea3918dfc in LinuxAIOHandler::collect (this=0x7f6e6c928c40) at /data/src/10.2/storage/innobase/os/os0file.cc:1915
#2  0x0000556ea391930a in LinuxAIOHandler::poll (this=0x7f6e6c928c40, m1=0x7f6e6c928ce8, m2=0x7f6e6c928cf0, request=0x7f6e6c928d20) at /data/src/10.2/storage/innobase/os/os0file.cc:2060
#3  0x0000556ea391946a in os_aio_linux_handler (global_segment=4, m1=0x7f6e6c928ce8, m2=0x7f6e6c928cf0, request=0x7f6e6c928d20) at /data/src/10.2/storage/innobase/os/os0file.cc:2114
#4  0x0000556ea391df05 in os_aio_handler (segment=4, m1=0x7f6e6c928ce8, m2=0x7f6e6c928cf0, request=0x7f6e6c928d20) at /data/src/10.2/storage/innobase/os/os0file.cc:5692
#5  0x0000556ea3b66754 in fil_aio_wait (segment=4) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5340
#6  0x0000556ea3a13667 in io_handler_thread (arg=0x556ea50e3220 <n+32>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f6e7af02494 in start_thread (arg=0x7f6e6c929700) at pthread_create.c:333
#8  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 21 (Thread 0x7f6e67fff700 (LWP 2461)):
#0  0x00007f6e7acf96ea in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000556ea3918dfc in LinuxAIOHandler::collect (this=0x7f6e67ffec40) at /data/src/10.2/storage/innobase/os/os0file.cc:1915
#2  0x0000556ea391930a in LinuxAIOHandler::poll (this=0x7f6e67ffec40, m1=0x7f6e67ffece8, m2=0x7f6e67ffecf0, request=0x7f6e67ffed20) at /data/src/10.2/storage/innobase/os/os0file.cc:2060
#3  0x0000556ea391946a in os_aio_linux_handler (global_segment=5, m1=0x7f6e67ffece8, m2=0x7f6e67ffecf0, request=0x7f6e67ffed20) at /data/src/10.2/storage/innobase/os/os0file.cc:2114
#4  0x0000556ea391df05 in os_aio_handler (segment=5, m1=0x7f6e67ffece8, m2=0x7f6e67ffecf0, request=0x7f6e67ffed20) at /data/src/10.2/storage/innobase/os/os0file.cc:5692
#5  0x0000556ea3b66754 in fil_aio_wait (segment=5) at /data/src/10.2/storage/innobase/fil/fil0fil.cc:5340
#6  0x0000556ea3a13667 in io_handler_thread (arg=0x556ea50e3228 <n+40>) at /data/src/10.2/storage/innobase/srv/srv0start.cc:337
#7  0x00007f6e7af02494 in start_thread (arg=0x7f6e67fff700) at pthread_create.c:333
#8  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 20 (Thread 0x7f6e677fe700 (LWP 2462)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000556ea39259c3 in os_event::timed_wait (this=0x556ea6ce1b00, abstime=0x7f6e677fdc30) at /data/src/10.2/storage/innobase/os/os0event.cc:286
#2  0x0000556ea3925ccd in os_event::wait_time_low (this=0x556ea6ce1b00, time_in_usec=985000, reset_sig_count=2) at /data/src/10.2/storage/innobase/os/os0event.cc:413
#3  0x0000556ea3925eae in os_event_wait_time_low (event=0x556ea6ce1b00, time_in_usec=985000, reset_sig_count=2) at /data/src/10.2/storage/innobase/os/os0event.cc:518
#4  0x0000556ea3af36b7 in pc_sleep_if_needed (next_loop_time=1528741064677, sig_count=2, cur_time=1528741063692) at /data/src/10.2/storage/innobase/buf/buf0flu.cc:2706
#5  0x0000556ea3af4525 in buf_flush_page_cleaner_coordinator () at /data/src/10.2/storage/innobase/buf/buf0flu.cc:3172
#6  0x00007f6e7af02494 in start_thread (arg=0x7f6e677fe700) at pthread_create.c:333
#7  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 19 (Thread 0x7f6e66df8700 (LWP 2464)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000556ea39259c3 in os_event::timed_wait (this=0x556ea7307940, abstime=0x7f6e66df7e80) at /data/src/10.2/storage/innobase/os/os0event.cc:286
#2  0x0000556ea3925ccd in os_event::wait_time_low (this=0x556ea7307940, time_in_usec=1000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:413
#3  0x0000556ea3925eae in os_event_wait_time_low (event=0x556ea7307940, time_in_usec=1000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:518
#4  0x0000556ea38f4d89 in lock_wait_timeout_thread () at /data/src/10.2/storage/innobase/lock/lock0wait.cc:547
#5  0x00007f6e7af02494 in start_thread (arg=0x7f6e66df8700) at pthread_create.c:333
#6  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 18 (Thread 0x7f6e665f7700 (LWP 2465)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000556ea39259c3 in os_event::timed_wait (this=0x556ea6ce1980, abstime=0x7f6e665f6ce0) at /data/src/10.2/storage/innobase/os/os0event.cc:286
#2  0x0000556ea3925ccd in os_event::wait_time_low (this=0x556ea6ce1980, time_in_usec=1000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:413
#3  0x0000556ea3925eae in os_event_wait_time_low (event=0x556ea6ce1980, time_in_usec=1000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:518
#4  0x0000556ea3a0ed03 in srv_error_monitor_thread () at /data/src/10.2/storage/innobase/srv/srv0srv.cc:1922
#5  0x00007f6e7af02494 in start_thread (arg=0x7f6e665f7700) at pthread_create.c:333
#6  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 17 (Thread 0x7f6e65df6700 (LWP 2466)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000556ea39259c3 in os_event::timed_wait (this=0x556ea6ce1a00, abstime=0x7f6e65df5e60) at /data/src/10.2/storage/innobase/os/os0event.cc:286
#2  0x0000556ea3925ccd in os_event::wait_time_low (this=0x556ea6ce1a00, time_in_usec=5000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:413
#3  0x0000556ea3925eae in os_event_wait_time_low (event=0x556ea6ce1a00, time_in_usec=5000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:518
#4  0x0000556ea3a0e7f8 in srv_monitor_thread () at /data/src/10.2/storage/innobase/srv/srv0srv.cc:1758
#5  0x00007f6e7af02494 in start_thread (arg=0x7f6e65df6700) at pthread_create.c:333
#6  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 16 (Thread 0x7f6e655f5700 (LWP 2467)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000556ea392611e in os_event::wait (this=0x556ea7344e20) at /data/src/10.2/storage/innobase/os/os0event.cc:166
#2  0x0000556ea3925b2d in os_event::wait_low (this=0x556ea7344e20, reset_sig_count=2) at /data/src/10.2/storage/innobase/os/os0event.cc:336
#3  0x0000556ea3925ed3 in os_event_wait_low (event=0x556ea7344e20, reset_sig_count=2) at /data/src/10.2/storage/innobase/os/os0event.cc:535
#4  0x0000556ea3a1d249 in sync_array_wait_event (arr=0x556ea6ca99b0, cell=@0x7f6e655f4d88: 0x556ea6ca9a80) at /data/src/10.2/storage/innobase/sync/sync0arr.cc:475
#5  0x0000556ea3a20953 in rw_lock_x_lock_func (lock=0x556ea73614b0, pass=0, file_name=0x556ea3f55c70 "/data/src/10.2/storage/innobase/srv/srv0srv.cc", line=2095) at /data/src/10.2/storage/innobase/sync/sync0rw.cc:759
#6  0x0000556ea3a0bfc9 in pfs_rw_lock_x_lock_func (lock=0x556ea73614b0, pass=0, file_name=0x556ea3f55c70 "/data/src/10.2/storage/innobase/srv/srv0srv.cc", line=2095) at /data/src/10.2/storage/innobase/include/sync0rw.ic:539
#7  0x0000556ea3a0f147 in srv_master_evict_from_table_cache (pct_check=100) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2095
#8  0x0000556ea3a0fbfd in srv_master_do_idle_tasks () at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2339
#9  0x0000556ea3a10189 in srv_master_thread (arg=0x0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2460
#10 0x00007f6e7af02494 in start_thread (arg=0x7f6e655f5700) at pthread_create.c:333
#11 0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 15 (Thread 0x7f6e64df4700 (LWP 2468)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000556ea39259c3 in os_event::timed_wait (this=0x556ea733abf0, abstime=0x7f6e64df3ea0) at /data/src/10.2/storage/innobase/os/os0event.cc:286
#2  0x0000556ea3925ccd in os_event::wait_time_low (this=0x556ea733abf0, time_in_usec=10000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:413
#3  0x0000556ea3925eae in os_event_wait_time_low (event=0x556ea733abf0, time_in_usec=10000000, reset_sig_count=0) at /data/src/10.2/storage/innobase/os/os0event.cc:518
#4  0x0000556ea3b4e56a in dict_stats_thread () at /data/src/10.2/storage/innobase/dict/dict0stats_bg.cc:451
#5  0x00007f6e7af02494 in start_thread (arg=0x7f6e64df4700) at pthread_create.c:333
#6  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 14 (Thread 0x7f6e5ffff700 (LWP 2469)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000556ea39259c3 in os_event::timed_wait (this=0x556ea70e9cf0, abstime=0x7f6e5fffeca0) at /data/src/10.2/storage/innobase/os/os0event.cc:286
#2  0x0000556ea3925ccd in os_event::wait_time_low (this=0x556ea70e9cf0, time_in_usec=5000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:413
#3  0x0000556ea3925eae in os_event_wait_time_low (event=0x556ea70e9cf0, time_in_usec=5000000, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:518
#4  0x0000556ea3a780fd in ib_wqueue_timedwait (wq=0x556ea70e9be0, wait_in_usecs=5000000) at /data/src/10.2/storage/innobase/ut/ut0wqueue.cc:163
#5  0x0000556ea3babbb9 in fts_optimize_thread (arg=0x556ea70e9be0) at /data/src/10.2/storage/innobase/fts/fts0opt.cc:3035
#6  0x00007f6e7af02494 in start_thread (arg=0x7f6e5ffff700) at pthread_create.c:333
#7  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 13 (Thread 0x7f6e5f7fe700 (LWP 2470)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000556ea392611e in os_event::wait (this=0x556ea6ce1780) at /data/src/10.2/storage/innobase/os/os0event.cc:166
#2  0x0000556ea3925b2d in os_event::wait_low (this=0x556ea6ce1780, reset_sig_count=15) at /data/src/10.2/storage/innobase/os/os0event.cc:336
#3  0x0000556ea3925ed3 in os_event_wait_low (event=0x556ea6ce1780, reset_sig_count=15) at /data/src/10.2/storage/innobase/os/os0event.cc:535
#4  0x0000556ea3a0c96d in srv_resume_thread (slot=0x556ea46a4848 <srv_sys+328>, sig_count=15, wait=true, timeout_usec=0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:930
#5  0x0000556ea3a10a3c in srv_purge_coordinator_suspend (slot=0x556ea46a4848 <srv_sys+328>, rseg_history_len=10) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2750
#6  0x0000556ea3a10dd7 in srv_purge_coordinator_thread (arg=0x0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2837
#7  0x00007f6e7af02494 in start_thread (arg=0x7f6e5f7fe700) at pthread_create.c:333
#8  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 12 (Thread 0x7f6e5effd700 (LWP 2471)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000556ea392611e in os_event::wait (this=0x556ea6ce1880) at /data/src/10.2/storage/innobase/os/os0event.cc:166
#2  0x0000556ea3925b2d in os_event::wait_low (this=0x556ea6ce1880, reset_sig_count=40) at /data/src/10.2/storage/innobase/os/os0event.cc:336
#3  0x0000556ea3925ed3 in os_event_wait_low (event=0x556ea6ce1880, reset_sig_count=0) at /data/src/10.2/storage/innobase/os/os0event.cc:535
#4  0x0000556ea3a0c96d in srv_resume_thread (slot=0x556ea46a48b8 <srv_sys+440>, sig_count=0, wait=true, timeout_usec=0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:930
#5  0x0000556ea3a10581 in srv_worker_thread (arg=0x0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2598
#6  0x00007f6e7af02494 in start_thread (arg=0x7f6e5effd700) at pthread_create.c:333
#7  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 11 (Thread 0x7f6e5e7fc700 (LWP 2472)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000556ea392611e in os_event::wait (this=0x556ea6ce1800) at /data/src/10.2/storage/innobase/os/os0event.cc:166
#2  0x0000556ea3925b2d in os_event::wait_low (this=0x556ea6ce1800, reset_sig_count=43) at /data/src/10.2/storage/innobase/os/os0event.cc:336
#3  0x0000556ea3925ed3 in os_event_wait_low (event=0x556ea6ce1800, reset_sig_count=0) at /data/src/10.2/storage/innobase/os/os0event.cc:535
#4  0x0000556ea3a0c96d in srv_resume_thread (slot=0x556ea46a4880 <srv_sys+384>, sig_count=0, wait=true, timeout_usec=0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:930
#5  0x0000556ea3a10581 in srv_worker_thread (arg=0x0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2598
#6  0x00007f6e7af02494 in start_thread (arg=0x7f6e5e7fc700) at pthread_create.c:333
#7  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 10 (Thread 0x7f6e5dffb700 (LWP 2473)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000556ea392611e in os_event::wait (this=0x556ea6ce1900) at /data/src/10.2/storage/innobase/os/os0event.cc:166
#2  0x0000556ea3925b2d in os_event::wait_low (this=0x556ea6ce1900, reset_sig_count=35) at /data/src/10.2/storage/innobase/os/os0event.cc:336
#3  0x0000556ea3925ed3 in os_event_wait_low (event=0x556ea6ce1900, reset_sig_count=0) at /data/src/10.2/storage/innobase/os/os0event.cc:535
#4  0x0000556ea3a0c96d in srv_resume_thread (slot=0x556ea46a48f0 <srv_sys+496>, sig_count=0, wait=true, timeout_usec=0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:930
#5  0x0000556ea3a10581 in srv_worker_thread (arg=0x0) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:2598
#6  0x00007f6e7af02494 in start_thread (arg=0x7f6e5dffb700) at pthread_create.c:333
#7  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 9 (Thread 0x7f6e5d7fa700 (LWP 2474)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000556ea392611e in os_event::wait (this=0x556ea6ce1a80) at /data/src/10.2/storage/innobase/os/os0event.cc:166
#2  0x0000556ea3925b2d in os_event::wait_low (this=0x556ea6ce1a80, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:336
#3  0x0000556ea3925ed3 in os_event_wait_low (event=0x556ea6ce1a80, reset_sig_count=0) at /data/src/10.2/storage/innobase/os/os0event.cc:535
#4  0x0000556ea3aea1d5 in buf_dump_thread () at /data/src/10.2/storage/innobase/buf/buf0dump.cc:809
#5  0x00007f6e7af02494 in start_thread (arg=0x7f6e5d7fa700) at pthread_create.c:333
#6  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 8 (Thread 0x7f6e5cff9700 (LWP 2475)):
#0  0x00007f6e7af0b7dd in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000556ea3926439 in os_thread_sleep (tm=1000000) at /data/src/10.2/storage/innobase/os/os0thread.cc:230
#2  0x0000556ea3ac630d in btr_defragment_thread () at /data/src/10.2/storage/innobase/btr/btr0defragment.cc:760
#3  0x00007f6e7af02494 in start_thread (arg=0x7f6e5cff9700) at pthread_create.c:333
#4  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 7 (Thread 0x7f6e53fff700 (LWP 2476)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000556ea392611e in os_event::wait (this=0x556ea6ce1b80) at /data/src/10.2/storage/innobase/os/os0event.cc:166
#2  0x0000556ea3925b2d in os_event::wait_low (this=0x556ea6ce1b80, reset_sig_count=1) at /data/src/10.2/storage/innobase/os/os0event.cc:336
#3  0x0000556ea3925ed3 in os_event_wait_low (event=0x556ea6ce1b80, reset_sig_count=0) at /data/src/10.2/storage/innobase/os/os0event.cc:535
#4  0x0000556ea3ad3696 in buf_resize_thread () at /data/src/10.2/storage/innobase/buf/buf0buf.cc:3086
#5  0x00007f6e7af02494 in start_thread (arg=0x7f6e53fff700) at pthread_create.c:333
#6  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 6 (Thread 0x7f6e537fe700 (LWP 2477)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000556ea3cb6fd7 in safe_cond_wait (cond=0x7f6e537fddc0, mp=0x7f6e537fde00, file=0x556ea3eb2b80 "/data/src/10.2/include/mysql/psi/mysql_thread.h", line=1149) at /data/src/10.2/mysys/thr_mutex.c:491
#2  0x0000556ea385a217 in inline_mysql_cond_wait (that=0x7f6e537fddc0, mutex=0x7f6e537fde00, src_file=0x556ea3eb4088 "/data/src/10.2/storage/innobase/handler/ha_innodb.cc", src_line=340) at /data/src/10.2/include/mysql/psi/mysql_thread.h:1149
#3  0x0000556ea385e81b in thd_destructor_proxy () at /data/src/10.2/storage/innobase/handler/ha_innodb.cc:340
#4  0x0000556ea384ccc0 in pfs_spawn_thread (arg=0x556ea70eadd0) at /data/src/10.2/storage/perfschema/pfs.cc:1862
#5  0x00007f6e7af02494 in start_thread (arg=0x7f6e537fe700) at pthread_create.c:333
#6  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 5 (Thread 0x7f6e6c128700 (LWP 2478)):
#0  do_sigwait (set=<optimized out>, set@entry=0x7f6e6c127e30, sig=sig@entry=0x7f6e6c127e00) at ../sysdeps/unix/sysv/linux/sigwait.c:64
#1  0x00007f6e7af0bced in __sigwait (set=0x7f6e6c127e30, sig=0x7f6e6c127e00) at ../sysdeps/unix/sysv/linux/sigwait.c:96
#2  0x0000556ea3200691 in signal_hand (arg=0x0) at /data/src/10.2/sql/mysqld.cc:3510
#3  0x0000556ea384ccc0 in pfs_spawn_thread (arg=0x556ea710de70) at /data/src/10.2/storage/perfschema/pfs.cc:1862
#4  0x00007f6e7af02494 in start_thread (arg=0x7f6e6c128700) at pthread_create.c:333
#5  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 4 (Thread 0x7f6e6c0de700 (LWP 2479)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000556ea3cb6fd7 in safe_cond_wait (cond=0x556ea4861fa0 <COND_slave_background>, mp=0x556ea4865280 <LOCK_slave_background>, file=0x556ea3d54a80 "/data/src/10.2/include/mysql/psi/mysql_thread.h", line=1138) at /data/src/10.2/mysys/thr_mutex.c:491
#2  0x0000556ea32294ac in inline_mysql_cond_wait (that=0x556ea4861fa0 <COND_slave_background>, mutex=0x556ea4865280 <LOCK_slave_background>, src_file=0x556ea3d5523d "/data/src/10.2/sql/slave.cc", src_line=334) at /data/src/10.2/include/mysql/psi/mysql_thread.h:1138
#3  0x0000556ea322a0e0 in handle_slave_background (arg=0x0) at /data/src/10.2/sql/slave.cc:334
#4  0x0000556ea384ccc0 in pfs_spawn_thread (arg=0x556ea71b96b0) at /data/src/10.2/storage/perfschema/pfs.cc:1862
#5  0x00007f6e7af02494 in start_thread (arg=0x7f6e6c0de700) at pthread_create.c:333
#6  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 3 (Thread 0x7f6e6c094700 (LWP 2482)):
#0  0x00007f6e7af0b7dd in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000556ea3926439 in os_thread_sleep (tm=20000) at /data/src/10.2/storage/innobase/os/os0thread.cc:230
#2  0x0000556ea39a8d90 in fil_wait_crypt_bg_threads (table=0x7f6e18020e58) at /data/src/10.2/storage/innobase/row/row0mysql.cc:3175
#3  0x0000556ea39a9e6e in row_drop_table_for_mysql (name=0x7f6e6c0907c0 "test/t1", trx=0x7f6e6f1967e8, drop_db=false, create_failed=0, nonatomic=true) at /data/src/10.2/storage/innobase/row/row0mysql.cc:3549
#4  0x0000556ea3876c81 in ha_innobase::delete_table (this=0x7f6e24012d60, name=0x7f6e6c092300 "./test/t1") at /data/src/10.2/storage/innobase/handler/ha_innodb.cc:13270
#5  0x0000556ea355ee90 in handler::ha_delete_table (this=0x7f6e24012d60, name=0x7f6e6c092300 "./test/t1") at /data/src/10.2/sql/handler.cc:4325
#6  0x0000556ea35598c2 in ha_delete_table (thd=0x7f6e24000b00, table_type=0x556ea6ca6b10, path=0x7f6e6c092300 "./test/t1", db=0x7f6e24012b30 "test", alias=0x7f6e240124e8 "t1", generate_warning=true) at /data/src/10.2/sql/handler.cc:2352
#7  0x0000556ea33a41f0 in mysql_rm_table_no_locks (thd=0x7f6e24000b00, tables=0x7f6e24012520, if_exists=true, drop_temporary=false, drop_view=false, dont_log_query=false, dont_free_locks=false) at /data/src/10.2/sql/sql_table.cc:2468
#8  0x0000556ea33a340d in mysql_rm_table (thd=0x7f6e24000b00, tables=0x7f6e24012520, if_exists=1 '\001', drop_temporary=0 '\000') at /data/src/10.2/sql/sql_table.cc:2088
#9  0x0000556ea32e5e47 in mysql_execute_command (thd=0x7f6e24000b00) at /data/src/10.2/sql/sql_parse.cc:4756
#10 0x0000556ea32efe49 in mysql_parse (thd=0x7f6e24000b00, rawbuf=0x7f6e24012448 "DROP TABLE IF EXISTS t1", length=23, parser_state=0x7f6e6c093200, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:7999
#11 0x0000556ea32dd8f2 in dispatch_command (command=COM_QUERY, thd=0x7f6e24000b00, packet=0x7f6e240088a1 "DROP TABLE IF EXISTS t1", packet_length=23, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:1821
#12 0x0000556ea32dc255 in do_command (thd=0x7f6e24000b00) at /data/src/10.2/sql/sql_parse.cc:1375
#13 0x0000556ea342ba66 in do_handle_one_connection (connect=0x556ea71cc470) at /data/src/10.2/sql/sql_connect.cc:1335
#14 0x0000556ea342b7f3 in handle_one_connection (arg=0x556ea71cc470) at /data/src/10.2/sql/sql_connect.cc:1241
#15 0x0000556ea384ccc0 in pfs_spawn_thread (arg=0x556ea71d69e0) at /data/src/10.2/storage/perfschema/pfs.cc:1862
#16 0x00007f6e7af02494 in start_thread (arg=0x7f6e6c094700) at pthread_create.c:333
#17 0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7f6e6c04a700 (LWP 2485)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x0000556ea3cb72e1 in safe_cond_timedwait (cond=0x556ea4861f60 <COND_thread_cache>, mp=0x556ea4864800 <LOCK_thread_cache>, abstime=0x7f6e6c049da0, file=0x556ea3d46b40 "/data/src/10.2/include/mysql/psi/mysql_thread.h", line=1175) at /data/src/10.2/mysys/thr_mutex.c:545
#2  0x0000556ea31fa60a in inline_mysql_cond_timedwait (that=0x556ea4861f60 <COND_thread_cache>, mutex=0x556ea4864800 <LOCK_thread_cache>, abstime=0x7f6e6c049da0, src_file=0x556ea3d488aa "/data/src/10.2/sql/mysqld.cc", src_line=2973) at /data/src/10.2/include/mysql/psi/mysql_thread.h:1175
#3  0x0000556ea31ff72a in cache_thread (thd=0x7f6e18000b00) at /data/src/10.2/sql/mysqld.cc:2972
#4  0x0000556ea31ff9ce in one_thread_per_connection_end (thd=0x7f6e18000b00, put_in_cache=true) at /data/src/10.2/sql/mysqld.cc:3061
#5  0x0000556ea342bb4f in do_handle_one_connection (connect=0x556ea71b3fe0) at /data/src/10.2/sql/sql_connect.cc:1354
#6  0x0000556ea342b7f3 in handle_one_connection (arg=0x556ea71b3fe0) at /data/src/10.2/sql/sql_connect.cc:1241
#7  0x0000556ea384ccc0 in pfs_spawn_thread (arg=0x556ea71d6d90) at /data/src/10.2/storage/perfschema/pfs.cc:1862
#8  0x00007f6e7af02494 in start_thread (arg=0x7f6e6c04a700) at pthread_create.c:333
#9  0x00007f6e792e893f in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7f6e7b31bb80 (LWP 2453)):
#0  0x00007f6e792df4ed in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x0000556ea320648b in handle_connections_sockets () at /data/src/10.2/sql/mysqld.cc:6604
#2  0x0000556ea320577a in mysqld_main (argc=144, argv=0x556ea6a69370) at /data/src/10.2/sql/mysqld.cc:6070
#3  0x0000556ea31f9dc0 in main (argc=22, argv=0x7fff70057978) at /data/src/10.2/sql/main.cc:25