151124 22:49:30 [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 http://kb.askmonty.org/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: 10.0.21-MariaDB-log key_buffer_size=1073741824 read_buffer_size=262144 max_used_connections=601 max_threads=352 thread_count=11 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1328810 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x0x7f26d8c18008 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 = 0x7f2aee56dcf0 thread_stack 0x48000 (my_addr_resolve failure: fork) /usr/sbin/mysqld(my_print_stacktrace+0x2b) [0xb7f84b] /usr/sbin/mysqld(handle_fatal_signal+0x398) [0x72b758] /lib64/libpthread.so.0() [0x312ca0f790] /lib64/libc.so.6() [0x312c689d64] /lib64/libc.so.6(memmove+0x7e) [0x312c68391e] /usr/sbin/mysqld(well_formed_copy_nchars(charset_info_st const*, char*, unsigned int, charset_info_st const*, char const*, unsigned int, unsigned int, char const**, char const**, char const**)+0x1c9) [0x649889] /usr/sbin/mysqld(Field_blob::store(char const*, unsigned int, charset_info_st const*)+0x156) [0x721186] /usr/sbin/mysqld(get_column_range_cardinality(Field*, st_key_range*, st_key_range*, unsigned int)+0x135) [0x644965] /usr/sbin/mysqld(calculate_cond_selectivity_for_table(THD*, TABLE*, Item*)+0x8b6) [0x810b66] /usr/sbin/mysqld() [0x52b0b1] /usr/sbin/mysqld(JOIN::optimize_inner()+0x6e1) [0x6217f1] /usr/sbin/mysqld(mysql_select(THD*, Item***, TABLE_LIST*, unsigned int, List&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*)+0xd8) [0x623f48] /usr/sbin/mysqld(handle_select(THD*, LEX*, select_result*, unsigned long)+0x28d) [0x62780d] /usr/sbin/mysqld() [0x5cd9d6] /usr/sbin/mysqld(mysql_execute_command(THD*)+0x5090) [0x5d8fe0] /usr/sbin/mysqld() [0x5da9d7] /usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0x1d0d) [0x5dce4d] /usr/sbin/mysqld(do_handle_one_connection(THD*)+0x453) [0x69a2d3] /usr/sbin/mysqld(handle_one_connection+0x42) [0x69a3a2] /lib64/libpthread.so.0() [0x312ca07a51] /lib64/libc.so.6(clone+0x6d) [0x312c6e89ad] Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (0x7f2e3c48c020): is an invalid pointer Connection ID (thread ID): 173801313 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=on,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=off,materialization=on,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=on,mrr_cost_based=off,mrr_sort_keys=on,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=on,table_elimination=on,extended_keys=on,exists_to_in=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. 151124 22:49:40 mysqld_safe Number of processes running now: 0 151124 22:49:40 mysqld_safe mysqld restarted 151124 22:49:40 [Note] /usr/sbin/mysqld (mysqld 10.0.21-MariaDB-log) starting as process 8894 ... 151124 22:49:40 [Note] InnoDB: Using mutexes to ref count buffer pool pages 151124 22:49:40 [Note] InnoDB: The InnoDB memory heap is disabled 151124 22:49:40 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 151124 22:49:40 [Note] InnoDB: Memory barrier is not used 151124 22:49:40 [Note] InnoDB: Compressed tables use zlib 1.2.3 151124 22:49:40 [Note] InnoDB: Using Linux native AIO 151124 22:49:40 [Note] InnoDB: Using CPU crc32 instructions 151124 22:49:40 [Note] InnoDB: Initializing buffer pool, size = 85.0G 151124 22:50:28 [Note] InnoDB: Completed initialization of buffer pool 151124 22:50:29 [Note] InnoDB: Highest supported file format is Barracuda. 151124 22:50:29 [Note] InnoDB: Log scan progressed past the checkpoint lsn 1619824202370 151124 22:50:29 [Note] InnoDB: Database was not shutdown normally! 151124 22:50:29 [Note] InnoDB: Starting crash recovery. 151124 22:50:29 [Note] InnoDB: Reading tablespace information from the .ibd files... 151124 22:51:08 [Note] InnoDB: Restoring possible half-written data pages 151124 22:51:08 [Note] InnoDB: from the doublewrite buffer... InnoDB: Doing recovery: scanned up to log sequence number 1619824334325 151124 22:51:09 [Note] InnoDB: Starting an apply batch of log records to the database... InnoDB: Progress in percent: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 InnoDB: Apply batch completed InnoDB: Last MySQL binlog file position 0 654126250, file name /var/log/mysql/192168100121-bin-log.000206 151124 22:51:20 [Note] InnoDB: 128 rollback segment(s) are active. 151124 22:51:20 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.25-73.1 started; log sequence number 1619824334325 151124 22:51:20 [Warning] InnoDB: Setting thread 10198 nice to -20 failed, current nice 0, errno 13 2015-11-24 22:51:20 7f05629f6700 InnoDB: Loading buffer pool(s) from .//ib_buffer_pool 151124 22:51:20 [Warning] InnoDB: Setting thread 10199 nice to -20 failed, current nice 0, errno 13 151124 22:51:20 [Note] Plugin 'FEEDBACK' is disabled. 151124 22:51:20 [ERROR] Plugin 'TokuDB' already installed 151124 22:51:20 [ERROR] Plugin 'TokuDB_trx' already installed 151124 22:51:20 [ERROR] Plugin 'TokuDB_lock_waits' already installed 151124 22:51:20 [ERROR] Plugin 'TokuDB_locks' already installed 151124 22:51:20 [ERROR] Plugin 'TokuDB_file_map' already installed 151124 22:51:20 [ERROR] Plugin 'TokuDB_fractal_tree_info' already installed 151124 22:51:20 [ERROR] Plugin 'TokuDB_fractal_tree_block_map' already installed Tue Nov 24 22:51:20 2015 TokuFT recovery starting in env /mnt/data/mysql/ Tue Nov 24 22:51:20 2015 TokuFT recovery scanning backward from 642953300 Tue Nov 24 22:51:20 2015 TokuFT recovery bw_end_checkpoint at 642953300 timestamp 1448405364691023 xid 642950428 (bw_newer) Tue Nov 24 22:51:20 2015 TokuFT recovery bw_begin_checkpoint at 642950428 timestamp 1448405364644943 (bw_between) Tue Nov 24 22:51:20 2015 TokuFT recovery turning around at begin checkpoint 642950428 time 46080 Tue Nov 24 22:51:20 2015 TokuFT recovery starts scanning forward to 642953300 from 642950428 left 2872 (fw_between) Tue Nov 24 22:51:30 2015 TokuFT recovery closing 2870 dictionaries Tue Nov 24 22:51:30 2015 TokuFT recovery making a checkpoint Tue Nov 24 22:51:30 2015 TokuFT recovery done 151124 22:51:30 [Note] Recovering after a crash using /var/log/mysql/192168100121-bin-log 151124 22:51:32 [Note] Starting crash recovery... 151124 22:51:32 [Note] Crash recovery finished.