120627 5:20:14 [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 http://kb.askmonty.org/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: 5.3.7-MariaDB-log
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key_buffer_size=33554432
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read_buffer_size=2097152
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max_used_connections=319
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max_threads=3001
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thread_count=29
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connection_count=29
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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 = 18510029 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: 0x0x2ab7fc3499b0
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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 = 0x512fc0f8 thread_stack 0x48000
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./bin/mysqld(my_print_stacktrace+0x2e) [0xa2b62e]
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./bin/mysqld(handle_fatal_signal+0x3f9) [0x7627f9]
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/lib64/libpthread.so.0 [0x341f00eb70]
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./bin/mysqld [0x6be068]
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./bin/mysqld(JOIN::exec()+0x852) [0x6cfc52]
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./bin/mysqld(st_select_lex_unit::exec()+0x184) [0x7ab904]
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./bin/mysqld(mysql_union(THD*, st_lex*, select_result*, st_select_lex_unit*, unsigned long)+0x2e) [0x7add0e]
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./bin/mysqld(handle_select(THD*, st_lex*, select_result*, unsigned long)+0x82) [0x6d2632]
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./bin/mysqld [0x647e7e]
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./bin/mysqld(mysql_execute_command(THD*)+0x3a58) [0x64da78]
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./bin/mysqld(mysql_parse(THD*, char*, unsigned int, char const**)+0x299) [0x650859]
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./bin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0xa9b) [0x65174b]
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./bin/mysqld(do_command(THD*)+0x101) [0x6522a1]
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./bin/mysqld(handle_one_connection+0xfd) [0x6436ad]
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/lib64/libpthread.so.0 [0x341f00673d]
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/lib64/libc.so.6(clone+0x6d) [0x341e4d44bd]
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Trying to get some variables.
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Some pointers may be invalid and cause the dump to abort.
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Query (0x2ab7deb1abf8):
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(select many fields from a few tables with joins and inner joins group by sort by limit 5000)
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UNION ALL
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(select many fields from a few tables with joins and inner joins group by sort by limit 5000)
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order by limit 5000
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Connection ID (thread ID): 30483258
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Status: KILL_CONNECTION
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Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=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
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