2020-01-30  6:53:20 9 [Warning] Checking table:   './coachsolutions_mitesh_host/f38_posts'

200130  6:53:29 [ERROR] mysqld got signal 11 ;

This could be because you hit a bug. It is also possible that this binary

or one of the libraries it was linked against is corrupt, improperly built,

or misconfigured. This error can also be caused by malfunctioning hardware.

To report this bug, see https://mariadb.com/kb/en/reporting-bugs

We will try our best to scrape up some info that will hopefully help

diagnose the problem, but since we have already crashed, 

something is definitely wrong and this may fail.

Server version: 10.3.22-MariaDB-1:10.3.22+maria~bionic-log

key_buffer_size=134217728

read_buffer_size=131072

max_used_connections=2

max_threads=502

thread_count=8

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1234708 K  bytes of memory

Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7f1984000c08

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 = 0x7f1c1812add8 thread_stack 0x49000

/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x55c6247ce2ee]

/usr/sbin/mysqld(handle_fatal_signal+0x515)[0x55c624266005]

/lib/x86_64-linux-gnu/libpthread.so.0(+0x12890)[0x7f1c1ac16890]

/usr/sbin/mysqld(_Z17calculate_key_lenP5TABLEjPKhm+0x0)[0x55c624139a70]

/usr/sbin/mysqld(+0x5ceed8)[0x55c6240caed8]

/usr/sbin/mysqld(_Z10sub_selectP4JOINP13st_join_tableb+0x151)[0x55c6240bd571]

/usr/sbin/mysqld(+0x5b6088)[0x55c6240b2088]

/usr/sbin/mysqld(_Z10sub_selectP4JOINP13st_join_tableb+0x172)[0x55c6240bd592]

/usr/sbin/mysqld(_ZN4JOIN10exec_innerEv+0x946)[0x55c6240dd5c6]

/usr/sbin/mysqld(_ZN4JOIN4execEv+0x33)[0x55c6240dd913]

/usr/sbin/mysqld(_Z12mysql_selectP3THDP10TABLE_LISTjR4ListI4ItemEPS4_jP8st_orderS9_S7_S9_yP13select_resultP18st_select_lex_unitP13st_select_lex+0xeb)[0x55c6240dbf8b]

/usr/sbin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x14d)[0x55c6240dc8fd]

/usr/sbin/mysqld(+0x5814f1)[0x55c62407d4f1]

/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x5fb0)[0x55c62408a210]

/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x20a)[0x55c62408c54a]

/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0x1c57)[0x55c62408eec7]

/usr/sbin/mysqld(_Z10do_commandP3THD+0x178)[0x55c62408fc88]

/usr/sbin/mysqld(_Z24do_handle_one_connectionP7CONNECT+0x33e)[0x55c62416299e]

/usr/sbin/mysqld(handle_one_connection+0x3d)[0x55c624162a6d]

nptl/pthread_create.c:463(start_thread)[0x7f1c1ac0b6db]

x86_64/clone.S:97(clone)[0x7f1c1a20d88f]

Trying to get some variables.

Some pointers may be invalid and cause the dump to abort.

Query (0x7f1984061e70): SHOW TABLES WHERE `Tables_in_coachsolutions_mitesh_host` IN ('f38_users', 'f38_usermeta', 'f38_blogs', 'f38_blogmeta', 'f38_signups', 'f38_site', 'f38_sitemeta', 'f38_registration_log', 'f38_posts', 'f38_comments', 'f38_links', 'f38_options', 'f38_postmeta', 'f38_terms', 'f38_term_taxonomy', 'f38_term_relationships', 'f38_termmeta', 'f38_commentmeta', 'f38_4_posts', 'f38_4_comments', 'f38_4_links', 'f38_4_options', 'f38_4_postmeta', 'f38_4_terms', 'f38_4_term_taxonomy', 'f38_4_term_relationships', 'f38_4_termmeta', 'f38_4_commentmeta', 'f38_13_posts', 'f38_13_comments', 'f38_13_links', 'f38_13_options', 'f38_13_postmeta', 'f38_13_terms', 'f38_13_term_taxonomy', 'f38_13_term_relationships', 'f38_13_termmeta', 'f38_13_commentmeta', 'f38_12_posts', 'f38_12_comments', 'f38_12_links', 'f38_12_options', 'f38_12_postmeta', 'f38_12_terms', 'f38_12_term_taxonomy', 'f38_12_term_relationships', 'f38_12_termmeta', 'f38_12_commentmeta', 'f38_16_posts', 'f38_16_comments', 'f38_16_links', 'f38_16_options', 'f38_16_postmeta', 'f38_16_terms', 'f38_16_term_taxonomy', 'f38_16_term_relationships', 'f38_16_termmeta', 'f38_16_commentmeta', 'f38_15_posts', 'f38_15_comments', 'f38_15_links', 'f38_15_options', 'f38_15_postmeta', 'f38_15_terms', 'f38_15_term_taxonomy', 'f38_15_term_relationships', 'f38_15_termmeta', 'f38_15_commentmeta', 'f38_19_posts', 'f38_19_comments', 'f38_19_links', 'f38_19_options', 'f38_19_postmeta', 'f38_19_terms', 'f38_19_term_taxonomy', 'f38_19_term_relationships', 'f38_19_termmeta', 'f38_19_commentmeta', 'f38_20_posts', 'f38_20_comments', 'f38_20_links', 'f38_20_options', 'f38_20_postmeta', 'f38_20_terms', 'f38_20_term_taxonomy', 'f38_20_term_relationships', 'f38_20_termmeta', 'f38_20_commentmeta', 'f38_21_posts', 'f38_21_comments', 'f38_21_links', 'f38_21_options', 'f38_21_postmeta', 'f38_21_terms', 'f38_21_term_taxonomy', 'f38_21_term_relationships', 'f38_21_termmeta', 'f38_21_commentmeta', 'f38_22_posts', 'f38_22_comments', 'f38_22_links', 'f38_22_options', 'f38_22_postmeta', 'f38_22_terms', 'f38_22_term_taxonomy', 'f38_22_term_relationships', 'f38_22_termmeta', 'f38_22_commentmeta', 'f38_23_posts', 'f38_23_comments', 'f38_23_links', 'f38_23_options', 'f38_23_postmeta', 'f38_23_terms', 'f38_23_term_taxonomy', 'f38_23_term_relationships', 'f38_23_termmeta', 'f38_23_commentmeta', 'f38_45_posts', 'f38_45_comments', 'f38_45_links', 'f38_45_options', 'f38_45_postmeta', 'f38_45_terms', 'f38_45_term_taxonomy', 'f38_45_term_relationships', 'f38_45_termmeta', 'f38_45_commentmeta', 'f38_75_posts', 'f38_75_comments', 'f38_75_links', 'f38_75_options', 'f38_75_postmeta', 'f38_75_terms', 'f38_75_term_taxonomy', 'f38_75_term_relationships', 'f38_75_termmeta', 'f38_75_commentmeta', 'f38_78_posts', 'f38_78_comments', 'f38_78_links', 'f38_78_options', 'f38_78_postmeta', 'f38_78_terms', 'f38_78_term_taxonomy', 'f38_78_term_relationships', 'f38_78_termmeta', 'f38_78_commentmeta', 'f38_28_posts', 'f38_28_comments', 'f38_28_links', 'f38_28_options', 'f38_28_postmeta', 'f38_28_terms', 'f38_28_term_taxonomy', 'f38_28_term_relationships', 'f38_28_termmeta', 'f38_28_commentmeta', 'f38_31_posts', 'f38_31_comments', 'f38_31_links', 'f38_31_options', 'f38_31_postmeta', 'f38_31_terms', 'f38_31_term_taxonomy', 'f38_31_term_relationships', 'f38_31_termmeta', 'f38_31_commentmeta', 'f38_30_posts', 'f38_30_comments', 'f38_30_links', 'f38_30_options', 'f38_30_postmeta', 'f38_30_terms', 'f38_30_term_taxonomy', 'f38_30_term_relationships', 'f38_30_termmeta', 'f38_30_commentmeta', 'f38_32_posts', 'f38_32_comments', 'f38_32_links', 'f38_32_options', 'f38_32_postmeta', 'f38_32_terms', 'f38_32_term_taxonomy', 'f38_32_term_relationships', 'f38_32_termmeta', 'f38_32_commentmeta', 'f38_34_posts', 'f38_34_comments', 'f38_34_links', 'f38_34_options', 'f38_34_postmeta', 'f38_34_terms', 'f38_34_term_taxonomy', 'f38_34_term_relationships', 'f38_34_termmeta', 'f38_34_commentmeta', 'f38_35_posts', 'f38_35_comments', 'f38_35_links', 'f38_35_options', 'f38_35_postmeta', 'f38_35_terms', 'f38_35_term_taxonomy', 'f38_35_term_relationships', 'f38_35_termmeta', 'f38_35_commentmeta', 'f38_36_posts', 'f38_36_comments', 'f38_36_links', 'f38_36_options', 'f38_36_postmeta', 'f38_36_terms', 'f38_36_term_taxonomy', 'f38_36_term_relationships', 'f38_36_termmeta', 'f38_36_commentmeta', 'f38_38_posts', 'f38_38_comments', 'f38_38_links', 'f38_38_options', 'f38_38_postmeta', 'f38_38_terms', 'f38_38_term_taxonomy', 'f38_38_term_relationships', 'f38_38_termmeta', 'f38_38_commentmeta', 'f38_39_posts', 'f38_39_comments', 'f38_39_links', 'f38_39_options', 'f38_39_postmeta', 'f38_39_terms', 'f38_39_term_taxonomy', 'f38_39_term_relationships', 'f38_39_termmeta', 'f38_39_commentmeta', 'f38_46_posts', 'f38_46_comments', 'f38_46_links', 'f38_46_options', 'f38_46_postmeta', 'f38_46_terms', 'f38_46_term_taxonomy', 'f38_46_term_relationships', 'f38_46_termmeta', 'f38_46_commentmeta', 'f38_51_posts', 'f38_51_comments', 'f38_51_links', 'f38_51_options', 'f38_51_postmeta', 'f38_51_terms', 'f38_51_term_taxonomy', 'f38_51_term_relationships', 'f38_51_termmeta', 'f38_51_commentmeta', 'f38_70_posts', 'f38_70_comments', 'f38_70_links', 'f38_70_options', 'f38_70_postmeta', 'f38_70_terms', 'f38_70_term_taxonomy', 'f38_70_term_relationships', 'f38_70_termmeta', 'f38_70_commentmeta', 'f38_48_posts', 'f38_48_comments', 'f38_48_links', 'f38_48_options', 'f38_48_postmeta', 'f38_48_terms', 'f38_48_term_taxonomy', 'f38_48_term_relationships', 'f38_48_termmeta', 'f38_48_commentmeta', 'f38_49_posts', 'f38_49_comments', 'f38_49_links', 'f38_49_options', 'f38_49_postmeta', 'f38_49_terms', 'f38_49_term_taxonomy', 'f38_49_term_relationships', 'f38_49_termmeta', 'f38_49_commentmeta', 'f38_190_posts', 'f38_190_comments', 'f38_190_links', 'f38_190_options', 'f38_190_postmeta', 'f38_190_terms', 'f38_190_term_taxonomy', 'f38_190_term_relationships', 'f38_190_termmeta', 'f38_190_commentmeta', 'f38_52_posts', 'f38_52_comments', 'f38_52_links', 'f38_52_options', 'f38_52_postmeta', 'f38_52_terms', 'f38_52_term_taxonomy', 'f38_52_term_relationships', 'f38_52_termmeta', 'f38_52_commentmeta', 'f38_166_posts', 'f38_166_comments', 'f38_166_links', 'f38_166_options', 'f38_166_postmeta', 'f38_166_terms', 'f38_166_term_taxonomy', 'f38_166_term_relationships', 'f38_166_termmeta', 'f38_166_commentmeta', 'f38_54_posts', 'f38_54_comments', 'f38_54_links', 'f38_54_options', 'f38_54_postmeta', 'f38_54_terms', 'f38_54_term_taxonomy', 'f38_54_term_relationships', 'f38_54_termmeta', 'f38_54_commentmeta', 'f38_55_posts', 'f38_55_comments', 'f38_55_links', 'f38_55_options', 'f38_55_postmeta', 'f38_55_terms', 'f38_55_term_taxonomy', 'f38_55_term_relationships', 'f38_55_termmeta', 'f38_55_commentmeta', 'f38_124_posts', 'f38_124_comments', 'f38_124_links', 'f38_124_options', 'f38_124_postmeta', 'f38_124_terms', 'f38_124_term_taxonomy', 'f38_124_term_relationships', 'f38_124_termmeta', 'f38_124_commentmeta', 'f38_60_posts', 'f38_60_comments', 'f38_60_links', 'f38_60_options', 'f38_60_postmeta', 'f38_60_terms', 'f38_60_term_taxonomy', 'f38_60_term_relationships', 'f38_60_termmeta', 'f38_60_commentmeta', 'f38_61_posts', 'f38_61_comments', 'f38_61_links', 'f38_61_options', 'f38_61_postmeta', 'f38_61_terms', 'f38_61_term_taxonomy', 'f38_61_term_relationships', 'f38_61_termmeta', 'f38_61_commentmeta', 'f38_63_posts', 'f38_63_comments', 'f38_63_links', 'f38_63_options', 'f38_63_postmeta', 'f38_63_terms', 'f38_63_term_taxonomy', 'f38_63_term_relationships', 'f38_63_termmeta', 'f38_63_commentmeta', 'f38_114_posts', 'f38_114_comments', 'f38_114_links', 'f38_114_options', 'f38_114_postmeta', 'f38_114_terms', 'f38_114_term_taxonomy', 'f38_114_term_relationships', 'f38_114_termmeta', 'f38_114_commentmeta', 'f38_65_posts', 'f38_65_comments', 'f38_65_links', 'f38_65_options', 'f38_65_postmeta', 'f38_65_terms', 'f38_65_term_taxonomy', 'f38_65_term_relationships', 'f38_65_termmeta', 'f38_65_commentmeta', 'f38_113_posts', 'f38_113_comments', 'f38_113_links', 'f38_113_options', 'f38_113_postmeta', 'f38_113_terms', 'f38_113_term_taxonomy', 'f38_113_term_relationships', 'f38_113_termmeta', 'f38_113_commentmeta', 'f38_67_posts', 'f38_67_comments', 'f38_67_links', 'f38_67_options', 'f38_67_postmeta', 'f38_67_terms', 'f38_67_term_taxonomy', 'f38_67_term_relationships', 'f38_67_termmeta', 'f38_67_commentmeta', 'f38_69_posts', 'f38_69_comments', 'f38_69_links', 'f38_69_options', 'f38_69_postmeta', 'f38_69_terms', 'f38_69_term_taxonomy', 'f38_69_term_relationships', 'f38_69_termmeta', 'f38_69_commentmeta', 'f38_72_posts', 'f38_72_comments', 'f38_72_links', 'f38_72_options', 'f38_72_postmeta', 'f38_72_terms', 'f38_72_term_taxonomy', 'f38_72_term_relationships', 'f38_72_termmeta', 'f38_72_commentmeta', 'f38_122_posts', 'f38_122_comments', 'f38_122_links', 'f38_122_options', 'f38_122_postmeta', 'f38_122_terms', 'f38_122_term_taxonomy', 'f38_122_term_relationships', 'f38_122_termmeta', 'f38_122_commentmeta', 'f38_82_posts', 'f38_82_comments', 'f38_82_links', 'f38_82_options', 'f38_82_postmeta', 'f38_82_terms', 'f38_82_term_taxonomy', 'f38_82_term_relationships', 'f38_82_termmeta', 'f38_82_commentmeta', 'f38_83_posts', 'f38_83_comments', 'f38_83_links', 'f38_83_options', 'f38_83_postmeta', 'f38_83_terms', 'f38_83_term_taxonomy', 'f38_83_term_relationships', 'f38_83_termmeta', 'f38_83_commentmeta', 'f38_120_posts', 'f38_120_comments', 'f38_120_links', 'f38_120_options', 'f38_120_postmeta', 'f38_120_terms', 'f38_120_term_taxonomy', 'f38_120_term_relationships', 'f38_120_termmeta', 'f38_120_commentmeta', 'f38_85_posts', 'f38_85_comments', 'f38_85_links', 'f38_85_options', 'f38_85_postmeta', 'f38_85_terms', 'f38_85_term_taxonomy', 'f38_85_term_relationships', 'f38_85_termmeta', 'f38_85_commentmeta', 'f38_119_posts', 'f38_119_comments', 'f38_119_links', 'f38_119_options', 'f38_119_postmeta', 'f38_119_terms', 'f38_119_term_taxonomy', 'f38_119_term_relationships', 'f38_119_termmeta', 'f38_119_commentmeta', 'f38_121_posts', 'f38_121_comments', 'f38_121_links', 'f38_121_options', 'f38_121_postmeta', 'f38_121_terms', 'f38_121_term_taxonomy', 'f38_121_term_relationships', 'f38_121_termmeta', 'f38_121_commentmeta', 'f38_116_posts', 'f38_116_comments', 'f38_116_links', 'f38_116_options', 'f38_116_postmeta', 'f38_116_terms', 'f38_116_term_taxonomy', 'f38_116_term_relationships', 'f38_116_termmeta', 'f38_116_commentmeta', 'f38_90_posts', 'f38_90_comments', 'f38_90_links', 'f38_90_options', 'f38_90_postmeta', 'f38_90_terms', 'f38_90_term_taxonomy', 'f38_90_term_relationships', 'f38_90_termmeta', 'f38_90_commentmeta', 'f38_91_posts', 'f38_91_comments', 'f38_91_links', 'f38_91_options', 'f38_91_postmeta', 'f38_91_terms', 'f38_91_term_taxonomy', 'f38_91_term_relationships', 'f38_91_termmeta', 'f38_91_commentmeta', 'f38_94_posts', 'f38_94_comments', 'f38_94_links', 'f38_94_options', 'f38_94_postmeta', 'f38_94_terms', 'f38_94_term_taxonomy', 'f38_94_term_relationships', 'f38_94_termmeta', 'f38_94_commentmeta', 'f38_171_posts', 'f38_171_comments', 'f38_171_links', 'f38_171_options', 'f38_171_postmeta', 'f38_171_terms', 'f38_171_term_taxonomy', 'f38_171_term_relationships', 'f38_171_termmeta', 'f38_171_commentmeta', 'f38_96_posts', 'f38_96_comments', 'f38_96_links', 'f38_96_options', 'f38_96_postmeta', 'f38_96_terms', 'f38_96_term_taxonomy', 'f38_96_term_relationships', 'f38_96_termmeta', 'f38_96_commentmeta', 'f38_98_posts', 'f38_98_comments', 'f38_98_links', 'f38_98_options', 'f38_98_postmeta', 'f38_98_terms', 'f38_98_term_taxonomy', 'f38_98_term_relationships', 'f38_98_termmeta', 'f38_98_commentmeta', 'f38_99_posts', 'f38_99_comments', 'f38_99_links', 'f38_99_options', 'f38_99_postmeta', 'f38_99_terms', 'f38_99_term_taxonomy', 'f38_99_term_relationships', 'f38_99_termmeta', 'f38_99_commentmeta', 'f38_100_posts', 'f38_100_comments', 'f38_100_links', 'f38_100_options', 'f38_100_postmeta', 'f38_100_terms', 'f38_100_term_taxonomy', 'f38_100_term_relationships', 'f38_100_termmeta', 'f38_100_commentmeta', 'f38_103_posts', 'f38_103_comments', 'f38_103_links', 'f38_103_options', 'f38_103_postmeta', 'f38_103_terms', 'f38_103_term_taxonomy', 'f38_103_term_relationships', 'f38_103_termmeta', 'f38_103_commentmeta', 'f38_104_posts', 'f38_104_comments', 'f38_104_links', 'f38_104_options', 'f38_104_postmeta', 'f38_104_terms', 'f38_104_term_taxonomy', 'f38_104_term_relationships', 'f38_104_termmeta', 'f38_104_commentmeta', 'f38_105_posts', 'f38_105_comments', 'f38_105_links', 'f38_105_options', 'f38_105_postmeta', 'f38_105_terms', 'f38_105_term_taxonomy', 'f38_105_term_relationships', 'f38_105_termmeta', 'f38_105_commentmeta', 'f38_106_posts', 'f38_106_comments', 'f38_106_links', 'f38_106_options', 'f38_106_postmeta', 'f38_106_terms', 'f38_106_term_taxonomy', 'f38_106_term_relationships', 'f38_106_termmeta', 'f38_106_commentmeta', 'f38_107_posts', 'f38_107_comments', 'f38_107_links', 'f38_107_options', 'f38_107_postmeta', 'f38_107_terms', 'f38_107_term_taxonomy', 'f38_107_term_relationships', 'f38_107_termmeta', 'f38_107_commentmeta', 'f38_108_posts', 'f38_108_comments', 'f38_108_links', 'f38_108_options', 'f38_108_postmeta', 'f38_108_terms', 'f38_108_term_taxonomy', 'f38_108_term_relationships', 'f38_108_termmeta', 'f38_108_commentmeta', 'f38_123_posts', 'f38_123_comments', 'f38_123_links', 'f38_123_options', 'f38_123_postmeta', 'f38_123_terms', 'f38_123_term_taxonomy', 'f38_123_term_relationships', 'f38_123_termmeta', 'f38_123_commentmeta', 'f38_117_posts', 'f38_117_comments', 'f38_117_links', 'f38_117_options', 'f38_117_postmeta', 'f38_117_terms', 'f38_117_term_taxonomy', 'f38_117_term_relationships', 'f38_117_termmeta', 'f38_117_commentmeta', 'f38_118_posts', 'f38_118_comments', 'f38_118_links', 'f38_118_options', 'f38_118_postmeta', 'f38_118_terms', 'f38_118_term_taxonomy', 'f38_118_term_relationships', 'f38_118_termmeta', 'f38_118_commentmeta', 'f38_125_posts', 'f38_125_comments', 'f38_125_links', 'f38_125_options', 'f38_125_postmeta', 'f38_125_terms', 'f38_125_term_taxonomy', 'f38_125_term_relationships', 'f38_125_termmeta', 'f38_125_commentmeta', 'f38_126_posts', 'f38_126_comments', 'f38_126_links', 'f38_126_options', 'f38_126_postmeta', 'f38_126_terms', 'f38_126_term_taxonomy', 'f38_126_term_relationships', 'f38_126_termmeta', 'f38_126_commentmeta', 'f38_127_posts', 'f38_127_comments', 'f38_127_links', 'f38_127_options', 'f38_127_postmeta', 'f38_127_terms', 'f38_127_term_taxonomy', 'f38_127_term_relationships', 'f38_127_termmeta', 'f38_127_commentmeta', 'f38_128_posts', 'f38_128_comments', 'f38_128_links', 'f38_128_options', 'f38_128_postmeta', 'f38_128_terms', 'f38_128_term_taxonomy', 'f38_128_term_relationships', 'f38_128_termmeta', 'f38_128_commentmeta', 'f38_129_posts', 'f38_129_comments', 'f38_129_links', 'f38_129_options', 'f38_129_postmeta', 'f38_129_terms', 'f38_129_term_taxonomy', 'f38_129_term_relationships', 'f38_129_termmeta', 'f38_129_commentmeta', 'f38_130_posts', 'f38_130_comments', 'f38_130_links', 'f38_130_options', 'f38_130_postmeta', 'f38_130_terms', 'f38_130_term_taxonomy', 'f38_130_term_relationships', 'f38_130_termmeta', 'f38_130_commentmeta', 'f38_131_posts', 'f38_131_comments', 'f38_131_links', 'f38_131_options', 'f38_131_postmeta', 'f38_131_terms', 'f38_131_term_taxonomy', 'f38_131_term_relationships', 'f38_131_termmeta', 'f38_131_commentmeta', 'f38_132_posts', 'f38_132_comments', 'f38_132_links', 'f38_132_options', 'f38_132_postmeta', 'f38_132_terms', 'f38_132_term_taxonomy', 'f38_132_term_relationships', 'f38_132_termmeta', 'f38_132_commentmeta', 'f38_133_posts', 'f38_133_comments', 'f38_133_links', 'f38_133_options', 'f38_133_postmeta', 'f38_133_terms', 'f38_133_term_taxonomy', 'f38_133_term_relationships', 'f38_133_termmeta', 'f38_133_commentmeta', 'f38_134_posts', 'f38_134_comments', 'f38_134_links', 'f38_134_options', 'f38_134_postmeta', 'f38_134_terms', 'f38_134_term_taxonomy', 'f38_134_term_relationships', 'f38_134_termmeta', 'f38_134_commentmeta', 'f38_135_posts', 'f38_135_comments', 'f38_135_links', 'f38_135_options', 'f38_135_postmeta', 'f38_135_terms', 'f38_135_term_taxonomy', 'f38_135_term_relationships', 'f38_135_termmeta', 'f38_135_commentmeta', 'f38_136_posts', 'f38_136_comments', 'f38_136_links', 'f38_136_options', 'f38_136_postmeta', 'f38_136_terms', 'f38_136_term_taxonomy', 'f38_136_term_relationships', 'f38_136_termmeta', 'f38_136_commentmeta', 'f38_137_posts', 'f38_137_comments', 'f38_137_links', 'f38_137_options', 'f38_137_postmeta', 'f38_137_terms', 'f38_137_term_taxonomy', 'f38_137_term_relationships', 'f38_137_termmeta', 'f38_137_commentmeta', 'f38_138_posts', 'f38_138_comments', 'f38_138_links', 'f38_138_options', 'f38_138_postmeta', 'f38_138_terms', 'f38_138_term_taxonomy', 'f38_138_term_relationships', 'f38_138_termmeta', 'f38_138_commentmeta', 'f38_139_posts', 'f38_139_comments', 'f38_139_links', 'f38_139_options', 'f38_139_postmeta', 'f38_139_terms', 'f38_139_term_taxonomy', 'f38_139_term_relationships', 'f38_139_termmeta', 'f38_139_commentmeta', 'f38_140_posts', 'f38_140_comments', 'f38_140_links', 'f38_140_options', 'f38_140_postmeta', 'f38_140_terms', 'f38_140_term_taxonomy', 'f38_140_term_relationships', 'f38_140_termmeta', 'f38_140_commentmeta', 'f38_141_posts', 'f38_141_comments', 'f38_141_links', 'f38_141_options', 'f38_141_postmeta', 'f38_141_terms', 'f38_141_term_taxonomy', 'f38_141_term_relationships', 'f38_141_termmeta', 'f38_141_commentmeta', 'f38_142_posts', 'f38_142_comments', 'f38_142_links', 'f38_142_options', 'f38_142_postmeta', 'f38_142_terms', 'f38_142_term_taxonomy', 'f38_142_term_relationships', 'f38_142_termmeta', 'f38_142_commentmeta', 'f38_143_posts', 'f38_143_comments', 'f38_143_links', 'f38_143_options', 'f38_143_postmeta', 'f38_143_terms', 'f38_143_term_taxonomy', 'f38_143_term_relationships', 'f38_143_termmeta', 'f38_143_commentmeta', 'f38_144_posts', 'f38_144_comments', 'f38_144_links', 'f38_144_options', 'f38_144_postmeta', 'f38_144_terms', 'f38_144_term_taxonomy', 'f38_144_term_relationships', 'f38_144_termmeta', 'f38_144_commentmeta', 'f38_145_posts', 'f38_145_comments', 'f38_145_links', 'f38_145_options', 'f38_145_postmeta', 'f38_145_terms', 'f38_145_term_taxonomy', 'f38_145_term_relationships', 'f38_145_termmeta', 'f38_145_commentmeta', 'f38_146_posts', 'f38_146_comments', 'f38_146_links', 'f38_146_options', 'f38_146_postmeta', 'f38_146_terms', 'f38_146_term_taxonomy', 'f38_146_term_relationships', 'f38_146_termmeta', 'f38_146_commentmeta', 'f38_147_posts', 'f38_147_comments', 'f38_147_links', 'f38_147_options', 'f38_147_postmeta', 'f38_147_terms', 'f38_147_term_taxonomy', 'f38_147_term_relationships', 'f38_147_termmeta', 'f38_147_commentmeta', 'f38_148_posts', 'f38_148_comments', 'f38_148_links', 'f38_148_options', 'f38_148_postmeta', 'f38_148_terms', 'f38_148_term_taxonomy', 'f38_148_term_relationships', 'f38_148_termmeta', 'f38_148_commentmeta', 'f38_149_posts', 'f38_149_comments', 'f38_149_links', 'f38_149_options', 'f38_149_postmeta', 'f38_149_terms', 'f38_149_term_taxonomy', 'f38_149_term_relationships', 'f38_149_termmeta', 'f38_149_commentmeta', 'f38_150_posts', 'f38_150_comments', 'f38_150_links', 'f38_150_options', 'f38_150_postmeta', 'f38_150_terms', 'f38_150_term_taxonomy', 'f38_150_term_relationships', 'f38_150_termmeta', 'f38_150_commentmeta', 'f38_151_posts', 'f38_151_comments', 'f38_151_links', 'f38_151_options', 'f38_151_postmeta', 'f38_151_terms', 'f38_151_term_taxonomy', 'f38_151_term_relationships', 'f38_151_termmeta', 'f38_151_commentmeta', 'f38_182_posts', 'f38_182_comments', 'f38_182_links', 'f38_182_options', 'f38_182_postmeta', 'f38_182_terms', 'f38_182_term_taxonomy', 'f38_182_term_relationships', 'f38_182_termmeta', 'f38_182_commentmeta', 'f38_181_posts', 'f38_181_comments', 'f38_181_links', 'f38_181_options', 'f38_181_postmeta', 'f38_181_terms', 'f38_181_term_taxonomy', 'f38_181_term_relationships', 'f38_181_termmeta', 'f38_181_commentmeta', 'f38_180_posts', 'f38_180_comments', 'f38_180_links', 'f38_180_options', 'f38_180_postmeta', 'f38_180_terms', 'f38_180_term_taxonomy', 'f38_180_term_relationships', 'f38_180_termmeta', 'f38_180_commentmeta', 'f38_178_posts', 'f38_178_comments', 'f38_178_links', 'f38_178_options', 'f38_178_postmeta', 'f38_178_terms', 'f38_178_term_taxonomy', 'f38_178_term_relationships', 'f38_178_termmeta', 'f38_178_commentmeta', 'f38_177_posts', 'f38_177_comments', 'f38_177_links', 'f38_177_options', 'f38_177_postmeta', 'f38_177_terms', 'f38_177_term_taxonomy', 'f38_177_term_relationships', 'f38_177_termmeta', 'f38_177_commentmeta', 'f38_176_posts', 'f38_176_comments', 'f38_176_links', 'f38_176_options', 'f38_176_postmeta', 'f38_176_terms', 'f38_176_term_taxonomy', 'f38_176_term_relationships', 'f38_176_termmeta', 'f38_176_commentmeta', 'f38_175_posts', 'f38_175_comments', 'f38_175_links', 'f38_175_options', 'f38_175_postmeta', 'f38_175_terms', 'f38_175_term_taxonomy', 'f38_175_term_relationships', 'f38_175_termmeta', 'f38_175_commentmeta', 'f38_174_posts', 'f38_174_comments', 'f38_174_links', 'f38_174_options', 'f38_174_postmeta', 'f38_174_terms', 'f38_174_term_taxonomy', 'f38_174_term_relationships', 'f38_174_termmeta', 'f38_174_commentmeta', 'f38_173_posts', 'f38_173_comments', 'f38_173_links', 'f38_173_options', 'f38_173_postmeta', 'f38_173_terms', 'f38_173_term_taxonomy', 'f38_173_term_relationships', 'f38_173_termmeta', 'f38_173_commentmeta', 'f38_172_posts', 'f38_172_comments', 'f38_172_links', 'f38_172_options', 'f38_172_postmeta', 'f38_172_terms', 'f38_172_term_taxonomy', 'f38_172_term_relationships', 'f38_172_termmeta', 'f38_172_commentmeta', 'f38_170_posts', 'f38_170_comments', 'f38_170_links', 'f38_170_options', 'f38_170_postmeta', 'f38_170_terms', 'f38_170_term_taxonomy', 'f38_170_term_relationships', 'f38_170_termmeta', 'f38_170_commentmeta', 'f38_169_posts', 'f38_169_comments', 'f38_169_links', 'f38_169_options', 'f38_169_postmeta', 'f38_169_terms', 'f38_169_term_taxonomy', 'f38_169_term_relationships', 'f38_169_termmeta', 'f38_169_commentmeta', 'f38_168_posts', 'f38_168_comments', 'f38_168_links', 'f38_168_options', 'f38_168_postmeta', 'f38_168_terms', 'f38_168_term_taxonomy', 'f38_168_term_relationships', 'f38_168_termmeta', 'f38_168_commentmeta', 'f38_165_posts', 'f38_165_comments', 'f38_165_links', 'f38_165_options', 'f38_165_postmeta', 'f38_165_terms', 'f38_165_term_taxonomy', 'f38_165_term_relationships', 'f38_165_termmeta', 'f38_165_commentmeta', 'f38_164_posts', 'f38_164_comments', 'f38_164_links', 'f38_164_options', 'f38_164_postmeta', 'f38_164_terms', 'f38_164_term_taxonomy', 'f38_164_term_relationships', 'f38_164_termmeta', 'f38_164_commentmeta', 'f38_163_posts', 'f38_163_comments', 'f38_163_links', 'f38_163_options', 'f38_163_postmeta', 'f38_163_terms', 'f38_163_term_taxonomy', 'f38_163_term_relationships', 'f38_163_termmeta', 'f38_163_commentmeta', 'f38_162_posts', 'f38_162_comments', 'f38_162_links', 'f38_162_options', 'f38_162_postmeta', 'f38_162_terms', 'f38_162_term_taxonomy', 'f38_162_term_relationships', 'f38_162_termmeta', 'f38_162_commentmeta', 'f38_161_posts', 'f38_161_comments', 'f38_161_links', 'f38_161_options', 'f38_161_postmeta', 'f38_161_terms', 'f38_161_term_taxonomy', 'f38_161_term_relationships', 'f38_161_termmeta', 'f38_161_commentmeta', 'f38_160_posts', 'f38_160_comments', 'f38_160_links', 'f38_160_options', 'f38_160_postmeta', 'f38_160_terms', 'f38_160_term_taxonomy', 'f38_160_term_relationships', 'f38_160_termmeta', 'f38_160_commentmeta', 'f38_155_posts', 'f38_155_comments', 'f38_155_links', 'f38_155_options', 'f38_155_postmeta', 'f38_155_terms', 'f38_155_term_taxonomy', 'f38_155_term_relationships', 'f38_155_termmeta', 'f38_155_commentmeta', 'f38_156_posts', 'f38_156_comments', 'f38_156_links', 'f38_156_options', 'f38_156_postmeta', 'f38_156_terms', 'f38_156_term_taxonomy', 'f38_156_term_relationships', 'f38_156_termmeta', 'f38_156_commentmeta', 'f38_157_posts', 'f38_157_comments', 'f38_157_links', 'f38_157_options', 'f38_157_postmeta', 'f38_157_terms', 'f38_157_term_taxonomy', 'f38_157_term_relationships', 'f38_157_termmeta', 'f38_157_commentmeta', 'f38_158_posts', 'f38_158_comments', 'f38_158_links', 'f38_158_options', 'f38_158_postmeta', 'f38_158_terms', 'f38_158_term_taxonomy', 'f38_158_term_relationships', 'f38_158_termmeta', 'f38_158_commentmeta', 'f38_159_posts', 'f38_159_comments', 'f38_159_links', 'f38_159_options', 'f38_159_postmeta', 'f38_159_terms', 'f38_159_term_taxonomy', 'f38_159_term_relationships', 'f38_159_termmeta', 'f38_159_commentmeta', 'f38_153_posts', 'f38_153_comments', 'f38_153_links', 'f38_153_options', 'f38_153_postmeta', 'f38_153_terms', 'f38_153_term_taxonomy', 'f38_153_term_relationships', 'f38_153_termmeta', 'f38_153_commentmeta', 'f38_154_posts', 'f38_154_comments', 'f38_154_links', 'f38_154_options', 'f38_154_postmeta', 'f38_154_terms', 'f38_154_term_taxonomy', 'f38_154_term_relationships', 'f38_154_termmeta', 'f38_154_commentmeta', 'f38_152_posts', 'f38_152_comments', 'f38_152_links', 'f38_152_options', 'f38_152_postmeta', 'f38_152_terms', 'f38_152_term_taxonomy', 'f38_152_term_relationships', 'f38_152_termmeta', 'f38_152_commentmeta', 'f38_183_posts', 'f38_183_comments', 'f38_183_links', 'f38_183_options', 'f38_183_postmeta', 'f38_183_terms', 'f38_183_term_taxonomy', 'f38_183_term_relationships', 'f38_183_termmeta', 'f38_183_commentmeta', 'f38_184_posts', 'f38_184_comments', 'f38_184_links', 'f38_184_options', 'f38_184_postmeta', 'f38_184_terms', 'f38_184_term_taxonomy', 'f38_184_term_relationships', 'f38_184_termmeta', 'f38_184_commentmeta', 'f38_185_posts', 'f38_185_comments', 'f38_185_links', 'f38_185_options', 'f38_185_postmeta', 'f38_185_terms', 'f38_185_term_taxonomy', 'f38_185_term_relationships', 'f38_185_termmeta', 'f38_185_commentmeta', 'f38_186_posts', 'f38_186_comments', 'f38_186_links', 'f38_186_options', 'f38_186_postmeta', 'f38_186_terms', 'f38_186_term_taxonomy', 'f38_186_term_relationships', 'f38_186_termmeta', 'f38_186_commentmeta', 'f38_187_posts', 'f38_187_comments', 'f38_187_links', 'f38_187_options', 'f38_187_postmeta', 'f38_187_terms', 'f38_187_term_taxonomy', 'f38_187_term_relationships', 'f38_187_termmeta', 'f38_187_commentmeta', 'f38_188_posts', 'f38_188_comments', 'f38_188_links', 'f38_188_options', 'f38_188_postmeta', 'f38_188_terms', 'f38_188_term_taxonomy', 'f38_188_term_relationships', 'f38_188_termmeta', 'f38_188_commentmeta', 'f38_189_posts', 'f38_189_comments', 'f38_189_links', 'f38_189_options', 'f38_189_postmeta', 'f38_189_terms', 'f38_189_term_taxonomy', 'f38_189_term_relationships', 'f38_189_termmeta', 'f38_189_commentmeta')

Connection ID (thread ID): 10

Status: NOT_KILLED

Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on,split_materialized=on

The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains

information that should help you find out what is causing the crash.

Writing a core file...

Working directory at /var/lib/mysql/site

Resource Limits:

Limit                     Soft Limit           Hard Limit           Units     

Max cpu time              unlimited            unlimited            seconds   

Max file size             unlimited            unlimited            bytes     

Max data size             unlimited            unlimited            bytes     

Max stack size            8388608              unlimited            bytes     

Max core file size        0                    unlimited            bytes     

Max resident set          unlimited            unlimited            bytes     

Max processes             64057                64057                processes 

Max open files            16364                16364                files     

Max locked memory         16777216             16777216             bytes     

Max address space         unlimited            unlimited            bytes     

Max file locks            unlimited            unlimited            locks     

Max pending signals       64057                64057                signals   

Max msgqueue size         819200               819200               bytes     

Max nice priority         0                    0                    

Max realtime priority     0                    0                    

Max realtime timeout      unlimited            unlimited            us        

Core pattern: |/usr/share/apport/apport %p %s %c %d %P

2020-01-30  6:53:36 0 [Note] InnoDB: Using Linux native AIO

2020-01-30  6:53:36 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins

2020-01-30  6:53:36 0 [Note] InnoDB: Uses event mutexes

2020-01-30  6:53:36 0 [Note] InnoDB: Compressed tables use zlib 1.2.11

2020-01-30  6:53:36 0 [Note] InnoDB: Number of pools: 1

2020-01-30  6:53:36 0 [Note] InnoDB: Using SSE2 crc32 instructions

2020-01-30  6:53:36 0 [Note] InnoDB: Initializing buffer pool, total size = 8G, instances = 4, chunk size = 128M

2020-01-30  6:53:36 0 [Note] InnoDB: Completed initialization of buffer pool

2020-01-30  6:53:36 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().

2020-01-30  6:53:36 0 [Warning] InnoDB: Failed to set O_DIRECT on file./ibdata1; OPEN: Invalid argument, continuing anyway. O_DIRECT is known to result in 'Invalid argument' on Linux on tmpfs, see MySQL Bug#26662.