...
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2017-09-26 10:20:44 140474915764480 [Note] /usr/sbin/mysqld: ready for connections.
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Version: '10.1.27-MariaDB-1~xenial' socket: '/var/run/mysqld/mysqld.sock' port: 3306 mariadb.org binary distribution
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170926 10:20:44 [ERROR] mysqld got signal 11 ;
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This could be because you hit a bug. It is also possible that this binary
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or one of the libraries it was linked against is corrupt, improperly built,
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or misconfigured. This error can also be caused by malfunctioning hardware.
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To report this bug, see https://mariadb.com/kb/en/reporting-bugs
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We will try our best to scrape up some info that will hopefully help
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diagnose the problem, but since we have already crashed,
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something is definitely wrong and this may fail.
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Server version: 10.1.27-MariaDB-1~xenial
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key_buffer_size=1073741824
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read_buffer_size=2097152
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max_used_connections=0
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max_threads=4002
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thread_count=65
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It is possible that mysqld could use up to
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key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 17523288 K bytes of memory
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Hope that's ok; if not, decrease some variables in the equation.
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Thread pointer: 0x0
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Attempting backtrace. You can use the following information to find out
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where mysqld died. If you see no messages after this, something went
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terribly wrong...
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stack_bottom = 0x0 thread_stack 0x40000
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/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x47f8b5e4ae]
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/usr/sbin/mysqld(handle_fatal_signal+0x2f5)[0x47f86a7025]
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/lib/x86_64-linux-gnu/libpthread.so.0(+0x11390)[0x7fc2dbde6390]
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/usr/sbin/mysqld(wsrep_on+0x18)[0x47f8640ea8]
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/usr/sbin/mysqld(+0x8f2336)[0x47f89f9336]
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/usr/sbin/mysqld(+0x8f329f)[0x47f89fa29f]
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/usr/sbin/mysqld(+0x8aa088)[0x47f89b1088]
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/usr/sbin/mysqld(+0x8aa822)[0x47f89b1822]
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/usr/sbin/mysqld(+0x9bacf7)[0x47f8ac1cf7]
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/usr/sbin/mysqld(+0x9bbe17)[0x47f8ac2e17]
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/usr/sbin/mysqld(+0x9be18b)[0x47f8ac518b]
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/lib/x86_64-linux-gnu/libpthread.so.0(+0x76ba)[0x7fc2dbddc6ba]
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/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7fc2db4873dd]
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The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
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information that should help you find out what is causing the crash.
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