MySQL 死锁 - 无法正常重启？

Question

MySQL 死锁 - 无法正常重启？

MySQL 版本 5.5.13-1

摘自SHOW ENGINE INNODB STATUS\G：

LATEST DETECTED DEADLOCK
------------------------
111218 10:22:34
*** (1) TRANSACTION:
TRANSACTION 1318D95B, ACTIVE 0 sec starting index read
mysql tables in use 6, locked 6
LOCK WAIT 53 lock struct(s), heap size 14776, 77 row lock(s)
MySQL thread id 60933, query id 124472414 192.168.6.31 thanhnt Copying to tmp table
INSERT INTO usertmp(userid,npayvalue,balance)       
    SELECT B.`userid`, SUM(C.`moneyv`) a,(B.`balance` + B.`promotions`+ B.`promotions1`+ B.`overdraft`) b
    FROM `ox_campaigns` A
    INNER JOIN `v3_cam_date` C ON C.`campaignid` = A.`campaignid`
    INNER JOIN `selfserving_users_balances` B ON B.`userid` = A.`uid`
    INNER JOIN `selfserving_users` F ON F.`user_id` = B.`userid`
    INNER JOIN `selfserving_users_group_balances` E ON E.`groupid` = F.`groupid` AND E.`ispostpaid` = 0
    WHERE A.`revenue_type` = 6 AND C.`dt` BETWEEN A.`activate` AND A.`expire` AND C.`dt` >=  (SELECT DATE_ADD( A.ssv_payment_date_lastest, INTERVAL 1 DAY)  FROM `000_sys_params_v3` A)
    AND C.`viewcharge` >0 
    GROUP BY B.`userid`
*** (1) WAITING FOR THIS LOCK TO BE GRANTED:
RECORD LOCKS space id 222397 page no 2576 n bits 304 index `GEN_CLUST_INDEX` of table `reportingdb`.`v3_cam_date` /* Partition `p3` */ trx id 1318D95B lock mode S locks rec but not gap waiting
Record lock, heap no 170 PHYSICAL RECORD: n_fields 15; compact format; info bits 0
 0: len 6; hex 0000a61821ff; asc     ! ;;
 1: len 6; hex 00000b168ac0; asc       ;;
 2: len 7; hex 5200035d760432; asc R  ]v 2;;
 3: len 3; hex 8f661d; asc  f ;;
 4: len 3; hex 0000ac; asc    ;;
 5: len 4; hex 000cc08c; asc     ;;
 6: len 3; hex 0000ac; asc    ;;
 7: len 3; hex 000000; asc    ;;
 8: len 4; hex 000852a6; asc   R ;;
 9: len 3; hex 0519d2; asc    ;;
 10: len 3; hex 00009b; asc    ;;
 11: len 3; hex 8fb747; asc   G;;
 12: len 3; hex 800000; asc    ;;
 13: len 4; hex 00000000; asc     ;;
 14: len 4; hex 00249eda; asc  $  ;;

    ...

*** (2) TRANSACTION:
TRANSACTION 1318D958, ACTIVE 1 sec inserting, thread declared inside InnoDB 123
mysql tables in use 3, locked 3
4808 lock struct(s), heap size 555448, 1122860 row lock(s), undo log entries 7058
MySQL thread id 130380, query id 124472416 192.168.6.31 thanhnt
LOAD DATA INFILE '/data10/select_into.outfile/v3_cam_date.out' INTO TABLE v3_cam_date FIELDS TERMINATED BY  ','
*** (2) HOLDS THE LOCK(S):
RECORD LOCKS space id 222397 page no 2576 n bits 304 index `GEN_CLUST_INDEX` of table `reportingdb`.`v3_cam_date` /* Partition `p3` */ trx id 1318D958 lock_mode X
Record lock, heap no 1 PHYSICAL RECORD: n_fields 1; compact format; info bits 0

*** (2) WAITING FOR THIS LOCK TO BE GRANTED:
RECORD LOCKS space id 222397 page no 6296 n bits 1000 index `ix_campaignid_dt` of table `reportingdb`.`v3_cam_date` /* Partit
ion `p3` */ trx id 1318D958 lock_mode X locks gap before rec insert intention waiting
Record lock, heap no 213 PHYSICAL RECORD: n_fields 3; compact format; info bits 0
 0: len 3; hex 8f63a5; asc  c ;;
 1: len 3; hex 8fb73b; asc   ;;;
 2: len 6; hex 0000a617374f; asc     7O;;

*** WE ROLL BACK TRANSACTION (1)

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有时，它有一个巨大的结合“等待全局读锁定”在SHOW FULL PROCESSLIST\G和我的数据库被完全锁定。无法用 init 脚本重新启动，所以我必须做一个kill -9 <PID>（它会导致很多崩溃的表）。

按照本指南启用 InnoDB 锁定监视器。information_schema.innodb_locks是空的，下面是innodb_trx表格：

*************************** 1. row ***************************
                    trx_id: 135937A0
                 trx_state: RUNNING
               trx_started: 2011-12-19 11:16:04
     trx_requested_lock_id: NULL
          trx_wait_started: NULL
                trx_weight: 43929
       trx_mysql_thread_id: 257731
                 trx_query: INSERT INTO `__tZoneTempTable` (zoneid, rc, v, dt)  
    (SELECT a.`zoneid`, sum(a.`realclick`) as rc, sum(a.`totalview`) as v , a.`dt` FROM `v3_zone_date` a INNER JOIN `ox_zones` b ON a.`zoneid` = b.`zoneid` where b.`is_smallbiz` = 3 AND b.`deleted` = 0 AND a.`zoneid` > 0 AND a.`dt` =  NAME_CONST('_date',_latin1'2011-12-17' COLLATE 'latin1_swedish_ci') GROUP BY a.`zoneid`)
       trx_operation_state: fetching rows
         trx_tables_in_use: 10
         trx_tables_locked: 9
          trx_lock_structs: 43929
     trx_lock_memory_bytes: 6093240
           trx_rows_locked: 15961781
         trx_rows_modified: 0
   trx_concurrency_tickets: 359
       trx_isolation_level: REPEATABLE READ
         trx_unique_checks: 1
    trx_foreign_key_checks: 1
trx_last_foreign_key_error: NULL
 trx_adaptive_hash_latched: 0
 trx_adaptive_hash_timeout: 10000
*************************** 2. row ***************************
                    trx_id: 13590BD9
                 trx_state: RUNNING
               trx_started: 2011-12-19 11:15:23
     trx_requested_lock_id: NULL
          trx_wait_started: NULL
                trx_weight: 43929
       trx_mysql_thread_id: 257456
                 trx_query: INSERT INTO `__tZoneTempTable` (zoneid, rc, v, dt)  
    (SELECT a.`zoneid`, sum(a.`realclick`) as rc, sum(a.`totalview`) as v , a.`dt` FROM `v3_zone_date` a INNER JOIN `ox_zones` b ON a.`zoneid` = b.`zoneid` where b.`is_smallbiz` = 3 AND b.`deleted` = 0 AND a.`zoneid` > 0 AND a.`dt` =  NAME_CONST('_date',_latin1'2011-12-17' COLLATE 'latin1_swedish_ci') GROUP BY a.`zoneid`)
       trx_operation_state: fetching rows
         trx_tables_in_use: 10
         trx_tables_locked: 9
          trx_lock_structs: 43929
     trx_lock_memory_bytes: 6093240
           trx_rows_locked: 15961781
         trx_rows_modified: 0
   trx_concurrency_tickets: 359
       trx_isolation_level: REPEATABLE READ
         trx_unique_checks: 1
    trx_foreign_key_checks: 1
trx_last_foreign_key_error: NULL
 trx_adaptive_hash_latched: 0
 trx_adaptive_hash_timeout: 10000
*************************** 3. row ***************************
                    trx_id: 1358EA92
                 trx_state: RUNNING
               trx_started: 2011-12-19 11:14:57
     trx_requested_lock_id: NULL
          trx_wait_started: NULL
                trx_weight: 0
       trx_mysql_thread_id: 257363
                 trx_query: NULL
       trx_operation_state: NULL
         trx_tables_in_use: 0
         trx_tables_locked: 0
          trx_lock_structs: 0
     trx_lock_memory_bytes: 376
           trx_rows_locked: 0
         trx_rows_modified: 0
   trx_concurrency_tickets: 0
       trx_isolation_level: REPEATABLE READ
         trx_unique_checks: 1
    trx_foreign_key_checks: 1
trx_last_foreign_key_error: NULL
 trx_adaptive_hash_latched: 0
 trx_adaptive_hash_timeout: 10000

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正如@Chris 所建议的，我想提供以下SHOW CREATE TABLE输出：

mysql> show create table v3_cam_date\G
*************************** 1. row ***************************
       Table: v3_cam_date
Create Table: CREATE TABLE `v3_cam_date` (
  `campaignid` mediumint(9) NOT NULL DEFAULT '0',
  `totalclick` mediumint(9) unsigned NOT NULL DEFAULT '0',
  `totalview` int(11) unsigned NOT NULL DEFAULT '0',
  `realclick` mediumint(9) unsigned NOT NULL DEFAULT '0',
  `clickcharge` mediumint(9) unsigned NOT NULL DEFAULT '0',
  `viewcharge` int(11) unsigned NOT NULL DEFAULT '0',
  `uv` mediumint(9) unsigned NOT NULL DEFAULT '0',
  `uc` mediumint(9) unsigned NOT NULL DEFAULT '0',
  `dt` date NOT NULL DEFAULT '0000-00-00',
  `ctr` decimal(5,3) NOT NULL DEFAULT '0.000' COMMENT '=-1: meaning not available(N/A)',
  `moneyc` int(11) unsigned NOT NULL DEFAULT '0',
  `moneyv` int(11) unsigned NOT NULL DEFAULT '0',
  KEY `ix_campaignid_dt` (`campaignid`,`dt`),
  KEY `ix_dt` (`dt`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
/*!50100 PARTITION BY RANGE (TO_DAYS(dt))
(PARTITION p0 VALUES LESS THAN (0) ENGINE = InnoDB,
 PARTITION p01 VALUES LESS THAN (734502) ENGINE = InnoDB,
 PARTITION p2 VALUES LESS THAN (734683) ENGINE = InnoDB,
 PARTITION p3 VALUES LESS THAN MAXVALUE ENGINE = InnoDB) */

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这种死锁情况经常发生。我想找出是什么原因导致将来避免这种情况。

Answer 1

Der*_*ney 4

这种特定的死锁是由于在另一个线程更新表时尝试从v3_cam_date表中读取数据以将行插入表中而引起的。该声明表明：usertmpv3_cam_date

LOAD DATA INFILE '/data10/select_into.outfile/v3_cam_date.out' INTO TABLE v3_cam_date FIELDS TERMINATED BY  ','

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本文档页面提供了一些处理死锁的有用步骤，但在您的情况下最有用的提示可能是在插入表时使用READ COMMITTEDusrtmp事务隔离级别。

这基本上意味着您选择的只是已提交的值，而不是您的LOAD DATA INFILE语句（如果尚未完成提交）发生的任何更改。

如果您可以接受，这样的事情可能会起作用^*：

-- SET SESSION TO READ COMMITTED --
SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED;

-- ISSUE THE INSERT...SELECT --
INSERT INTO usertmp(userid,npayvalue,balance)       
SELECT B.`userid`, SUM(C.`moneyv`) a,(B.`balance` + B.`promotions`+ B.`promotions1`+ B.`overdraft`) b
FROM `ox_campaigns` A
INNER JOIN `v3_cam_date` C ON C.`campaignid` = A.`campaignid`
INNER JOIN `selfserving_users_balances` B ON B.`userid` = A.`uid`
INNER JOIN `selfserving_users` F ON F.`user_id` = B.`userid`
INNER JOIN `selfserving_users_group_balances` E ON E.`groupid` = F.`groupid` AND E.`ispostpaid` = 0
WHERE A.`revenue_type` = 6 AND C.`dt` BETWEEN A.`activate` AND A.`expire` AND C.`dt` >=  (SELECT DATE_ADD( A.ssv_payment_date_lastest, INTERVAL 1 DAY)  FROM `000_sys_params_v3` A)
AND C.`viewcharge` >0 
GROUP BY B.`userid`

-- SET BACK TO 'DEFAULT' --
SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;

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_{^*注意，我个人并没有尝试过上述方法来确保 READ COMMITTED 能够阻止死锁。}

但是加载这个文件需要多长时间呢？您可以在周围添加表锁LOAD DATA INFILE，但这当然会导致INSERT一直等待文件加载。

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