Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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10.5.9, 10.5.10, 10.6
Description
With the following ODBC data source defined and working (latest MariaDB Connector/ODBC):
[root@f4c27077179a /]# cat /etc/odbcinst.ini
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...
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# MariaDB 10.3.11 driver installed manually
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[MariaDB]
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Description = MariaDB Connector/ODBC v. 3.1.11
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Driver64 = /mariadb-connector-odbc-3.1.11-centos7-amd64/lib64/mariadb/libmaodbc.so
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[root@f4c27077179a /]# cat /etc/odbc.ini
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[maria]
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Description = Local MariaDB server
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Driver = MariaDB
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SERVER = 127.0.0.1
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PORT = 3306
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USER = u1
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PASSWORD = very_complex_Pasword_1
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DATABASE = test
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[root@f4c27077179a /]#
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[root@f4c27077179a /]# isql MariaDB_local_DSN
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+---------------------------------------+
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| Connected! |
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| |
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| sql-statement |
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| help [tablename] |
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| quit |
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| |
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+---------------------------------------+
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SQL> select * from t1;
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+------------+------------+
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| id | c1 |
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+------------+------------+
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| 1 | 1 |
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| 2 | 2 |
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+------------+------------+
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SQLRowCount returns 2
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2 rows fetched
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SQL> quit
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Let's try to use Spider UDF in a lame way, forgetting to create temporary table tmp of the proper structure:
[root@f4c27077179a /]# mysql
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Welcome to the MariaDB monitor. Commands end with ; or \g.
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Your MariaDB connection id is 23
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Server version: 10.5.9-6-MariaDB-enterprise MariaDB Enterprise Server
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Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
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Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
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MariaDB [(none)]> select * from test.t1;
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+----+------+
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| id | c1 |
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+----+------+
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| 1 | 1 |
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| 2 | 2 |
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+----+------+
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2 rows in set (0.001 sec)
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MariaDB [(none)]> select spider_direct_sql('select * from t1', 'tmp', 'wrapper "odbc", DSN "maria"');
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ERROR 2013 (HY000): Lost connection to MySQL server during query
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Server crashed:
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[root@f4c27077179a /]# tail -100 /var/lib/mysql/f4c27077179a.err
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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 = 0x7fccd8053c90 thread_stack 0x49000
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??:0(my_print_stacktrace)[0x55ec63f2ec0e]
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??:0(handle_fatal_signal)[0x55ec63906207]
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sigaction.c:0(__restore_rt)[0x7fccdd7ca630]
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??:0(THD::find_temporary_table(char const*, unsigned int, THD::Temporary_table_state))[0x55ec638843ff]
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??:0(THD::find_and_use_tmp_table(TABLE_LIST const*, TABLE**))[0x55ec638845a1]
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??:0(THD::open_temporary_table(TABLE_LIST*))[0x55ec63884731]
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??:0(spider_find_temporary_table(THD*, TABLE_LIST*))[0x7fccd81d6211]
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??:0(spider_direct_sql_body(st_udf_init*, st_udf_args*, char*, char*, char))[0x7fccd82225ff]
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??:0(Item_func_udf_int::val_int())[0x55ec6397d20e]
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??:0(Type_handler::Item_send_longlong(Item*, Protocol*, st_value*) const)[0x55ec63861209]
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??:0(Protocol::send_result_set_row(List<Item>*))[0x55ec6363e930]
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??:0(select_send::send_data(List<Item>&))[0x55ec636afc52]
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??:0(JOIN::exec_inner())[0x55ec6375fe9a]
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??:0(JOIN::exec())[0x55ec637602d3]
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??:0(mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*))[0x55ec6375e4ae]
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??:0(handle_select(THD*, LEX*, select_result*, unsigned long))[0x55ec6375eff4]
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/usr/sbin/mariadbd(+0x634643)[0x55ec635c0643]
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??:0(mysql_execute_command(THD*))[0x55ec63702784]
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??:0(mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool))[0x55ec637059ba]
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??:0(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool))[0x55ec63707af3]
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??:0(do_command(THD*))[0x55ec6370966b]
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??:0(do_handle_one_connection(CONNECT*, bool))[0x55ec637f5199]
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??:0(handle_one_connection)[0x55ec637f5434]
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??:0(MyCTX_nopad::finish(unsigned char*, unsigned int*))[0x55ec63b7bc1d]
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pthread_create.c:0(start_thread)[0x7fccdd7c2ea5]
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??:0(__clone)[0x7fccdb95a96d]
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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 (0x7fcc98030e30): select spider_direct_sql('select * from t1', 'tmp', 'wrapper "odbc", DSN "maria"')
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Connection ID (thread ID): 23
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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=on,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on,split_materialized=on,condition_pushdown_for_subquery=on,rowid_filter=on,condition_pushdown_from_having=on,not_null_range_scan=off
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The manual page at https://mariadb.com/kb/en/how-to-produce-a-full-stack-trace-for-mysqld/ contains
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information that should help you find out what is causing the crash.
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Writing a core file...
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Working directory at /var/lib/mysql
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Resource Limits:
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Limit Soft Limit Hard Limit Units
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Max cpu time unlimited unlimited seconds
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Max file size unlimited unlimited bytes
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Max data size unlimited unlimited bytes
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Max stack size 8388608 unlimited bytes
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Max core file size unlimited unlimited bytes
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Max resident set unlimited unlimited bytes
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Max processes unlimited unlimited processes
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Max open files 1048576 1048576 files
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Max locked memory 65536 65536 bytes
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Max address space unlimited unlimited bytes
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Max file locks unlimited unlimited locks
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Max pending signals 14634 14634 signals
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Max msgqueue size 819200 819200 bytes
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Max nice priority 0 0
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Max realtime priority 0 0
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Max realtime timeout unlimited unlimited us
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Core pattern: |/usr/share/apport/apport %p %s %c %d %P %E
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210516 10:10:55 mysqld_safe Number of processes running now: 0
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210516 10:10:55 mysqld_safe mysqld restarted
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2021-05-16 10:10:55 0 [Note] /usr/sbin/mariadbd (mysqld 10.5.9-6-MariaDB-enterprise) starting as process 863 ...
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2021-05-16 10:10:55 0 [Note] mariadbd: Aria engine: starting recovery
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recovered pages: 0% 37% 75% 87% 100% (0.0 seconds); tables to flush: 1 0
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(0.0 seconds);
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2021-05-16 10:10:55 0 [Note] mariadbd: Aria engine: recovery done
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2021-05-16 10:10:55 0 [Note] InnoDB: Uses event mutexes
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2021-05-16 10:10:55 0 [Note] InnoDB: Compressed tables use zlib 1.2.7
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2021-05-16 10:10:55 0 [Note] InnoDB: Number of pools: 1
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2021-05-16 10:10:55 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions
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2021-05-16 10:10:55 0 [Note] mariadbd: O_TMPFILE is not supported on /tmp (disabling future attempts)
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2021-05-16 10:10:55 0 [Note] InnoDB: Using Linux native AIO
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2021-05-16 10:10:55 0 [Note] InnoDB: Initializing buffer pool, total size = 134217728, chunk size = 134217728
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2021-05-16 10:10:55 0 [Note] InnoDB: Completed initialization of buffer pool
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2021-05-16 10:10:55 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
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2021-05-16 10:10:55 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=45106,45106
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2021-05-16 10:10:55 0 [Note] InnoDB: Starting final batch to recover 12 pages from redo log.
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2021-05-16 10:10:56 0 [Note] InnoDB: 128 rollback segments are active.
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2021-05-16 10:10:56 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
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2021-05-16 10:10:56 0 [Note] InnoDB: Creating shared tablespace for temporary tables
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2021-05-16 10:10:56 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
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2021-05-16 10:10:56 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
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2021-05-16 10:10:56 0 [Note] InnoDB: 10.5.9 started; log sequence number 48667; transaction id 35
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2021-05-16 10:10:56 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool
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2021-05-16 10:10:56 0 [Note] Plugin 'FEEDBACK' is disabled.
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2021-05-16 10:10:56 server_audit: MariaDB Audit Plugin version 2.0.4 STARTED.
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2021-05-16 10:10:56 server_audit: Query cache is enabled with the TABLE events. Some table reads can be veiled.
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2021-05-16 10:10:56 0 [Note] InnoDB: Buffer pool(s) load completed at 210516 10:10:56
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2021-05-16 10:10:56 0 [Note] Recovering after a crash using tc.log
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2021-05-16 10:10:56 0 [Note] Starting crash recovery...
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2021-05-16 10:10:56 0 [Note] Crash recovery finished.
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2021-05-16 10:10:56 0 [Note] Server socket created on IP: '::'.
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2021-05-16 10:10:56 0 [Note] Reading of all Master_info entries succeeded
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2021-05-16 10:10:56 0 [Note] Added new Master_info '' to hash table
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2021-05-16 10:10:56 0 [Note] /usr/sbin/mariadbd: ready for connections.
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Version: '10.5.9-6-MariaDB-enterprise' socket: '/var/lib/mysql/mysql.sock' port: 3306 MariaDB Enterprise Server
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[root@f4c27077179a /]#
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This should not happen. We should at least check that the table with that name exists and produce error if it does not.