Details
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Bug
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Status: Closed (View Workflow)
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Critical
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Resolution: Incomplete
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10.0.19
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Ver 15.1 Distrib 10.0.19-MariaDB, for Linux (x86_64) using readline 5.1
cPanel based server
CentOS 6
Description
Hi,
My sincerest apologies if I have done anything wrong, this is the first time I have used the MariaDB bug reporting system. Never the less, I run a cPanel environment with MariaDB. For some reason over the last few days we've had reports of MariaDB randomly restarting.
So I've checked the /var/lib/mysql/server.err log to see this:
Server version: 10.0.19-MariaDB |
key_buffer_size=67108864 |
read_buffer_size=131072 |
max_used_connections=30 |
max_threads=102 |
thread_count=12 |
It is possible that mysqld could use up to
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key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 289485 K bytes of memory |
Hope that's ok; if not, decrease some variables in the equation. |
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Thread pointer: 0x0x7f7db3fcd008
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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 |
terribly wrong...
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stack_bottom = 0x7f7ded4fed30 thread_stack 0x48000 |
/usr/sbin/mysqld(my_print_stacktrace+0x2b)[0xb7bc1b] |
/usr/sbin/mysqld(handle_fatal_signal+0x398)[0x72b318] |
/lib64/libpthread.so.0[0x312820f710] |
/usr/sbin/mysqld(_ZN10Item_fieldC1EP5Field+0xe)[0x743dee] |
/usr/sbin/mysqld(_ZN14Item_subselect18get_tmp_table_itemEP3THD+0x6e)[0x7a698e] |
/usr/sbin/mysqld(_ZN20Item_direct_view_ref18get_tmp_table_itemEP3THD+0x165)[0x752c75] |
/usr/sbin/mysqld(_ZN4JOIN10exec_innerEv+0x1965)[0x625fb5] |
/usr/sbin/mysqld(_ZN4JOIN4execEv+0x11)[0x626ee1] |
/usr/sbin/mysqld(_Z12mysql_selectP3THDPPP4ItemP10TABLE_LISTjR4ListIS1_ES2_jP8st_orderSB_S2_SB_yP13select_resultP18st_select_lex_unitP13st_select_lex+0x1dd)[0x623acd] |
/usr/sbin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x28d)[0x62723d] |
/usr/sbin/mysqld[0x5cd756] |
/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x4e91)[0x5d8bc1] |
/usr/sbin/mysqld[0x5da5e7] |
/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x1c7c)[0x5dc9cc] |
/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x453)[0x699b53] |
/usr/sbin/mysqld(handle_one_connection+0x42)[0x699c22] |
/lib64/libpthread.so.0[0x31282079d1] |
/lib64/libc.so.6(clone+0x6d)[0x3127ee88dd] |
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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 (0x7f7d956a8020): is an invalid pointer |
Connection ID (thread ID): 13147 |
Status: NOT_KILLED
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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,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 |
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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.
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Here's a copy of my.cnf
[mysqld]
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max_allowed_packet=268435456 |
open_files_limit=50000 |
max_connections=100 |
innodb_buffer_pool_size=5G
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query_cache_size=32M
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join_buffer_size=1024K
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tmp_table_size=48M
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max_heap_table_size=48M
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key_buffer_size=64M
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low_priority_updates=1 |
local-infile=0 |
sql_mode="" |
default-storage-engine=MyISAM |
innodb_file_per_table=1 |
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general_log = 1 |
general_log_file = /var/log/mysqld.log
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log-error = /var/log/mysqld.error.log
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Any advice on what I should do to further diagnose this issue would be greatly appreciated.