Details
Major
Description
I got this bug with optimizer_use_condition_selectivity = 2
140929 14:15:15 [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: 10.0.13-MariaDB-log key_buffer_size=268435456 read_buffer_size=8388608 max_used_connections=2 max_threads=402 thread_count=2 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 10149994 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x0x7f7cbaad0008 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 = 0x7f7da527fd10 thread_stack 0x48000 /usr/sbin/mysqld(my_print_stacktrace+0x2b)[0xb7054b] /usr/sbin/mysqld(handle_fatal_signal+0x398)[0x727588] /lib64/libpthread.so.0(+0xf710)[0x7f7da4efa710] /usr/sbin/mysqld[0x5f2d68] /usr/sbin/mysqld[0x600b24] /usr/sbin/mysqld[0x60114b] /usr/sbin/mysqld(_Z11choose_planP4JOINy+0xf5)[0x6016b5] /usr/sbin/mysqld[0x528e3d] /usr/sbin/mysqld(_ZN4JOIN14optimize_innerEv+0x6de)[0x61c8de] /usr/sbin/mysqld(_ZN4JOIN8optimizeEv+0x28)[0x61ed98] /usr/sbin/mysqld(_ZN18st_select_lex_unit8optimizeEv+0x1e6)[0x660616] /usr/sbin/mysqld(_Z22mysql_derived_optimizeP3THDP3LEXP10TABLE_LIST+0xe8)[0x5b1228] /usr/sbin/mysqld(_Z27mysql_handle_single_derivedP3LEXP10TABLE_LISTj+0x1bd)[0x5b252d] /usr/sbin/mysqld(_ZN13st_select_lex14handle_derivedEP3LEXj+0x47)[0x5c7457] /usr/sbin/mysqld(_ZN4JOIN14optimize_innerEv+0x136)[0x61c336] /usr/sbin/mysqld(_Z12mysql_selectP3THDPPP4ItemP10TABLE_LISTjR4ListIS1_ES2_jP8st_orderSB_S2_SB_yP13select_resultP18st_select_lex_unitP13st_select_lex+0xd8)[0x61efb8] /usr/sbin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x28d)[0x62284d] /usr/sbin/mysqld[0x5ca456] /usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x4c4f)[0x5d51af] /usr/sbin/mysqld[0x5d6cc2] /usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x1b20)[0x5d8e80] /usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x453)[0x696993] /usr/sbin/mysqld(handle_one_connection+0x42)[0x696a62] /lib64/libpthread.so.0(+0x79d1)[0x7f7da4ef29d1] /lib64/libc.so.6(clone+0x6d)[0x7f7da360f86d] Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (0x7f7cb9c1f020): is an invalid pointer Connection ID (thread ID): 3 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 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.
CREATE TABLE `engine4_event_membership` (
`resource_id` int(11) unsigned NOT NULL,
`user_id` int(11) unsigned NOT NULL,
`active` tinyint(1) NOT NULL DEFAULT '0',
`resource_approved` tinyint(1) NOT NULL DEFAULT '0',
`user_approved` tinyint(1) NOT NULL DEFAULT '0',
`message` text COLLATE utf8_unicode_ci,
`rsvp` tinyint(3) NOT NULL DEFAULT '3',
`title` text COLLATE utf8_unicode_ci,
`behalf_guid` varchar(50) COLLATE utf8_unicode_ci DEFAULT NULL,
`additional_member_count` int(11) NOT NULL DEFAULT '1',
`come_with_count` int(11) NOT NULL DEFAULT '0',
PRIMARY KEY (`resource_id`,`user_id`),
KEY `REVERSE` (`user_id`),
KEY `BEHALF` (`behalf_guid`),
KEY `BEHALF_COMPOUND` (`resource_id`,`user_id`,`behalf_guid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
CREATE TABLE `engine4_event_events` (
`event_id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`title` varchar(128) COLLATE utf8_unicode_ci NOT NULL,
`description` text COLLATE utf8_unicode_ci NOT NULL,
`user_id` int(11) unsigned NOT NULL,
`parent_type` varchar(64) COLLATE utf8_unicode_ci NOT NULL,
`parent_id` int(11) unsigned NOT NULL,
`search` tinyint(1) NOT NULL DEFAULT '1',
`creation_date` datetime NOT NULL,
`modified_date` datetime NOT NULL,
`starttime` datetime NOT NULL,
`endtime` datetime NOT NULL,
`host` varchar(115) COLLATE utf8_unicode_ci NOT NULL,
`location` varchar(115) COLLATE utf8_unicode_ci NOT NULL,
`view_count` int(11) unsigned NOT NULL DEFAULT '0',
`member_count` int(11) unsigned NOT NULL DEFAULT '0',
`approval` tinyint(1) NOT NULL DEFAULT '0',
`invite` tinyint(1) NOT NULL DEFAULT '0',
`photo_id` int(11) unsigned NOT NULL,
`category_id` int(11) unsigned NOT NULL DEFAULT '0',
`is_private` tinyint(1) DEFAULT '0',
`person` varchar(255) COLLATE utf8_unicode_ci NOT NULL DEFAULT '',
`phone` varchar(255) COLLATE utf8_unicode_ci NOT NULL DEFAULT '',
`email` varchar(255) COLLATE utf8_unicode_ci NOT NULL DEFAULT '',
`country` int(11) NOT NULL DEFAULT '0',
`region` int(11) NOT NULL DEFAULT '0',
`city` int(11) NOT NULL DEFAULT '0',
`adress` varchar(255) COLLATE utf8_unicode_ci NOT NULL DEFAULT '',
`website` varchar(255) COLLATE utf8_unicode_ci NOT NULL DEFAULT '',
`short_info` text COLLATE utf8_unicode_ci NOT NULL,
`membership_privacy` enum('no_confirm','confirm','invite') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'no_confirm',
`membership_no_confirm` enum('all','friends','parent_members','friends_and_parent_members','nobody') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'all',
`unique_name` varchar(128) COLLATE utf8_unicode_ci DEFAULT NULL,
`region_part` int(11) NOT NULL DEFAULT '0',
PRIMARY KEY (`event_id`),
UNIQUE KEY `PROFILE_ADRESS` (`unique_name`),
KEY `user_id` (`user_id`),
KEY `parent_type` (`parent_type`,`parent_id`),
KEY `starttime` (`starttime`),
KEY `search` (`search`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
CREATE TABLE `engine4_activity_reposts` (
`repost_id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`user_id` int(11) unsigned NOT NULL,
`subject_type` varchar(24) CHARACTER SET latin1 COLLATE latin1_general_ci NOT NULL,
`subject_id` int(11) unsigned NOT NULL,
`object_type` varchar(24) CHARACTER SET latin1 COLLATE latin1_general_ci NOT NULL,
`object_id` int(11) unsigned NOT NULL,
`params` text COLLATE utf8_unicode_ci,
`date` datetime NOT NULL,
`order` int(11) NOT NULL DEFAULT '0',
`autoposted` varchar(255) COLLATE utf8_unicode_ci NOT NULL DEFAULT '',
`is_private` int(1) NOT NULL DEFAULT '0',
PRIMARY KEY (`repost_id`),
UNIQUE KEY `BETWEEN` (`subject_type`,`subject_id`,`object_type`,`object_id`,`is_private`),
KEY `SUBJECT` (`subject_type`,`subject_id`),
KEY `OBJECT` (`object_type`,`object_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
Query:
SELECT
COUNT(1) AS `zend_paginator_row_count`
FROM
(
(
SELECT
`engine4_event_events`.*,
0 AS is_reposted
FROM
`engine4_event_events`
WHERE
((engine4_event_events.is_private = 0)) AND
((event_id in (SELECT
`engine4_event_membership`.`resource_id`
FROM
`engine4_event_membership`
WHERE
(user_id = 127994) AND (active = 1)
)
))
)
UNION
(
SELECT
`engine4_event_events`.*,
repost_id AS is_reposted
FROM
`engine4_activity_reposts` INNER JOIN `engine4_event_events`
WHERE
(engine4_activity_reposts.object_type = 'event') AND
(engine4_activity_reposts.object_id = engine4_event_events.event_id) AND
(engine4_activity_reposts.is_private = 0) AND
(engine4_activity_reposts.subject_id = 127994) AND
(engine4_activity_reposts.subject_type in ('user'))
)
) AS `t`;
Gliffy Diagrams
Attachments
Issue Links
Activity
- All
- Comments
- Work Log
- History
- Activity
- Transitions
The part of the query that causes the crash is:
SET optimizer_use_condition_selectivity = 2;
SELECT
engine4_event_events.*,
repost_id AS is_reposted
FROM
engine4_activity_reposts,
engine4_event_events
WHERE
(engine4_activity_reposts.object_type = 'event') AND
(engine4_activity_reposts.object_id = engine4_event_events.event_id) AND
(engine4_activity_reposts.is_private = 0) AND
(engine4_activity_reposts.subject_id = 127994) AND
(engine4_activity_reposts.subject_type in ('user'))
;
The crash happens in table_multi_eq_cond_selectivity()
- table= engine4_activity_reposts
- item_equal= multiple equal(engine4_activity_reposts.object_id, engine4_event_events.event_id)
when we're here:
adjust_sel= TRUE;
for (uint j= 0; j < keyparts && adjust_sel; j++)
{
if (j > 0)
keyuse+= ref_keyuse_steps[j-1];
Item *ref_item= keyuse->val;
we have
(gdb) p ref_keyuse_steps[j-1] $64 = 55996
which is obviously a garbage value.
Another interesting thing: there is this piece of code:
for (i= 0; i < keyparts; i++)
{
uint fldno;
if (is_hash_join_key_no(key))
fldno= keyuse->keypart;
else
fldno= table->key_info[key].key_part[keyparts-1].fieldnr - 1;
if (fld->field_index == fldno)
break;
}
this a loop on variable 'i' that doesn't use the variable. Something is apparently wrong. fldno must get different value, in both branches of the if-else statement.
Fixed the crash, also fixed the apparently-wrong code. It's interesting that test coverage wasn't sufficient to detect the latter.
--source include/have_innodb.inc SET optimizer_use_condition_selectivity = 2; CREATE TABLE `engine4_event_membership` ( `resource_id` int(11) unsigned NOT NULL, `user_id` int(11) unsigned NOT NULL, `active` tinyint(1) NOT NULL DEFAULT '0', `resource_approved` tinyint(1) NOT NULL DEFAULT '0', `user_approved` tinyint(1) NOT NULL DEFAULT '0', `message` text COLLATE utf8_unicode_ci, `rsvp` tinyint(3) NOT NULL DEFAULT '3', `title` text COLLATE utf8_unicode_ci, `behalf_guid` varchar(50) COLLATE utf8_unicode_ci DEFAULT NULL, `additional_member_count` int(11) NOT NULL DEFAULT '1', `come_with_count` int(11) NOT NULL DEFAULT '0', PRIMARY KEY (`resource_id`,`user_id`), KEY `REVERSE` (`user_id`), KEY `BEHALF` (`behalf_guid`), KEY `BEHALF_COMPOUND` (`resource_id`,`user_id`,`behalf_guid`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci; CREATE TABLE `engine4_event_events` ( `event_id` int(11) unsigned NOT NULL AUTO_INCREMENT, `title` varchar(128) COLLATE utf8_unicode_ci NOT NULL, `description` text COLLATE utf8_unicode_ci NOT NULL, `user_id` int(11) unsigned NOT NULL, `parent_type` varchar(64) COLLATE utf8_unicode_ci NOT NULL, `parent_id` int(11) unsigned NOT NULL, `search` tinyint(1) NOT NULL DEFAULT '1', `creation_date` datetime NOT NULL, `modified_date` datetime NOT NULL, `starttime` datetime NOT NULL, `endtime` datetime NOT NULL, `host` varchar(115) COLLATE utf8_unicode_ci NOT NULL, `location` varchar(115) COLLATE utf8_unicode_ci NOT NULL, `view_count` int(11) unsigned NOT NULL DEFAULT '0', `member_count` int(11) unsigned NOT NULL DEFAULT '0', `approval` tinyint(1) NOT NULL DEFAULT '0', `invite` tinyint(1) NOT NULL DEFAULT '0', `photo_id` int(11) unsigned NOT NULL, `category_id` int(11) unsigned NOT NULL DEFAULT '0', `is_private` tinyint(1) DEFAULT '0', `person` varchar(255) COLLATE utf8_unicode_ci NOT NULL DEFAULT '', `phone` varchar(255) COLLATE utf8_unicode_ci NOT NULL DEFAULT '', `email` varchar(255) COLLATE utf8_unicode_ci NOT NULL DEFAULT '', `country` int(11) NOT NULL DEFAULT '0', `region` int(11) NOT NULL DEFAULT '0', `city` int(11) NOT NULL DEFAULT '0', `adress` varchar(255) COLLATE utf8_unicode_ci NOT NULL DEFAULT '', `website` varchar(255) COLLATE utf8_unicode_ci NOT NULL DEFAULT '', `short_info` text COLLATE utf8_unicode_ci NOT NULL, `membership_privacy` enum('no_confirm','confirm','invite') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'no_confirm', `membership_no_confirm` enum('all','friends','parent_members','friends_and_parent_members','nobody') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'all', `unique_name` varchar(128) COLLATE utf8_unicode_ci DEFAULT NULL, `region_part` int(11) NOT NULL DEFAULT '0', PRIMARY KEY (`event_id`), UNIQUE KEY `PROFILE_ADRESS` (`unique_name`), KEY `user_id` (`user_id`), KEY `parent_type` (`parent_type`,`parent_id`), KEY `starttime` (`starttime`), KEY `search` (`search`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci; CREATE TABLE `engine4_activity_reposts` ( `repost_id` int(11) unsigned NOT NULL AUTO_INCREMENT, `user_id` int(11) unsigned NOT NULL, `subject_type` varchar(24) CHARACTER SET latin1 COLLATE latin1_general_ci NOT NULL, `subject_id` int(11) unsigned NOT NULL, `object_type` varchar(24) CHARACTER SET latin1 COLLATE latin1_general_ci NOT NULL, `object_id` int(11) unsigned NOT NULL, `params` text COLLATE utf8_unicode_ci, `date` datetime NOT NULL, `order` int(11) NOT NULL DEFAULT '0', `autoposted` varchar(255) COLLATE utf8_unicode_ci NOT NULL DEFAULT '', `is_private` int(1) NOT NULL DEFAULT '0', PRIMARY KEY (`repost_id`), UNIQUE KEY `BETWEEN` (`subject_type`,`subject_id`,`object_type`,`object_id`,`is_private`), KEY `SUBJECT` (`subject_type`,`subject_id`), KEY `OBJECT` (`object_type`,`object_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci; SELECT COUNT(1) AS `zend_paginator_row_count` FROM ( ( SELECT `engine4_event_events`.*, 0 AS is_reposted FROM `engine4_event_events` WHERE ((engine4_event_events.is_private = 0)) AND ((event_id in (SELECT `engine4_event_membership`.`resource_id` FROM `engine4_event_membership` WHERE (user_id = 127994) AND (active = 1) ) )) ) UNION ( SELECT `engine4_event_events`.*, repost_id AS is_reposted FROM `engine4_activity_reposts` INNER JOIN `engine4_event_events` WHERE (engine4_activity_reposts.object_type = 'event') AND (engine4_activity_reposts.object_id = engine4_event_events.event_id) AND (engine4_activity_reposts.is_private = 0) AND (engine4_activity_reposts.subject_id = 127994) AND (engine4_activity_reposts.subject_type in ('user')) ) ) AS `t`;