You have been subscribed to a public bug: key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 440470 K bytes of memory Hope that's ok; if not, decrease some variables in the equation.
Thread pointer: 0x0 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 0 thread_stack 0x40000 /opt/mysql/bin/mysqld(my_print_stacktrace+0x3b)[0xf6c06b] /opt/mysql/bin/mysqld(handle_fatal_signal+0x489)[0x86b9d9] /lib/x86_64-linux-gnu/libpthread.so.0(+0x11390)[0x7f56aefb8390] /opt/mysql/bin/mysqld(_Z13destroy_mutexP9PFS_mutex+0x5d)[0x13deb6d] /opt/mysql/bin/mysqld(_ZN6tokudb6thread7mutex_tD1Ev+0x1a)[0xfc338a] /lib/x86_64-linux-gnu/libc.so.6(+0x39ff8)[0x7f56ae6f7ff8] /lib/x86_64-linux-gnu/libc.so.6(+0x3a045)[0x7f56ae6f8045] /opt/mysql/bin/mysqld[0x85ba15] /opt/mysql/bin/mysqld(unireg_abort+0xa7)[0x860947] /opt/mysql/bin/mysqld[0x86457f] /opt/mysql/bin/mysqld(_Z11mysqld_mainiPPc+0x840)[0x864ee0] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7f56ae6de830] /opt/mysql/bin/mysqld(_start+0x29)[0x7a7c19] You may download the Percona Server operations manual by visiting http://www.percona.com/software/percona-server/. You may find information in the manual which will help you identify the cause of the crash. Writing a core file Segmentation fault (core dumped) 2017-12-20T16:16:01.951934Z mysqld_safe mysqld from pid file /data/mysql/i-hyqmqpza.pid ended ** Affects: mysql-server Importance: Undecided Status: New ** Tags: core dumped -- The bot crash, restart mysql https://bugs.launchpad.net/bugs/1739523 You received this bug notification because you are a member of Ubuntu Server/Client Support Team, which is subscribed to MySQL. -- Mailing list: https://launchpad.net/~enterprise-support Post to : [email protected] Unsubscribe : https://launchpad.net/~enterprise-support More help : https://help.launchpad.net/ListHelp

