load data 方式匯入的資料不可以用binlog日誌進行恢復
QQ群裡面有人問起這個問題: 用load data 匯入資料的時候，在binlog檔案中記錄的不是insert 語句,這樣的話，如果用load data 匯入資料，當需要恢復資料庫的時候 binlog恢復就不行了
load data local infile '/root/table.txt' into table test.table ;
生成binlog 日誌
然後用mysqlbinlog解析binlog日誌，再more檢視如下：
# at 147405
#130718 3:15:02 server id 1 end_log_pos 147710 Query thread_id=97960 exec_time=0 error_code=0
use test/*!*/;
SET TIMESTAMP=1374117302/*!*/;
SET @@session.sql_mode=0/*!*/;
/*!\C utf8 *//*!*/;
SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=33/*!*/;
create table `test`.`table`(
`c1` varchar(20) ,
`c2` varchar(20) ,
`c3` varchar(20) ,
`c4` varchar(20) ,
`c5` varchar(20) ,
`c6` varchar(20) ,
`c7` varchar(20) ,
`c8` varchar(20) ,
`c9` varchar(20)
)
/*!*/;
# at 147710
#130718 3:17:14 server id 1 end_log_pos 147783 Query thread_id=98119 exec_time=2 error_code=0
SET TIMESTAMP=1374117434/*!*/;
SET @@session.sql_mode=4194304/*!*/;
BEGIN
/*!*/;
# at 147783
#130718 3:17:14 server id 1 end_log_pos 164190
#Begin_load_query: file_id: 1 block_len: 16384
# at 164190
#130718 3:17:14 server id 1 end_log_pos 180597
#Append_block: file_id: 1 block_len: 16384
# at 180597
#130718 3:17:14 server id 1 end_log_pos 197004
#Append_block: file_id: 1 block_len: 16384
# at 197004
#130718 3:17:14 server id 1 end_log_pos 213411
#Append_block: file_id: 1 block_len: 16384
# at 213411
#130718 3:17:14 server id 1 end_log_pos 229818
#Append_block: file_id: 1 block_len: 16384
# at 229818
#130718 3:17:14 server id 1 end_log_pos 246225
#Append_block: file_id: 1 block_len: 16384
# at 246225
#130718 3:17:14 server id 1 end_log_pos 262632
#Append_block: file_id: 1 block_len: 16384
# at 262632
#130718 3:17:14 server id 1 end_log_pos 279039
#Append_block: file_id: 1 block_len: 16384
# at 279039
#130718 3:17:14 server id 1 end_log_pos 295446
#Append_block: file_id: 1 block_len: 16384
# at 295446
#130718 3:17:14 server id 1 end_log_pos 311853
#Append_block: file_id: 1 block_len: 16384
# at 311853
#130718 3:17:14 server id 1 end_log_pos 328260
#Append_block: file_id: 1 block_len: 16384
# at 328260
#130718 3:17:14 server id 1 end_log_pos 344667
#Append_block: file_id: 1 block_len: 16384
# at 344667
#130718 3:17:14 server id 1 end_log_pos 361074
#Append_block: file_id: 1 block_len: 16384
# at 361074
#130718 3:17:14 server id 1 end_log_pos 377481
#Append_block: file_id: 1 block_len: 16384
# at 377481
#130718 3:17:14 server id 1 end_log_pos 393888
#Append_block: file_id: 1 block_len: 16384
# at 393888
#130718 3:17:14 server id 1 end_log_pos 410295
#Append_block: file_id: 1 block_len: 16384
# at 410295
#130718 3:17:14 server id 1 end_log_pos 426702
#Append_block: file_id: 1 block_len: 16384
# at 426702
#130718 3:17:14 server id 1 end_log_pos 443109
#Append_block: file_id: 1 block_len: 16384
# at 443109
#130718 3:17:14 server id 1 end_log_pos 459516
#Append_block: file_id: 1 block_len: 16384
# at 459516
#130718 3:17:14 server id 1 end_log_pos 475923
#Append_block: file_id: 1 block_len: 16384
# at 475923
#130718 3:17:14 server id 1 end_log_pos 492330
#Append_block: file_id: 1 block_len: 16384
# at 492330
#130718 3:17:14 server id 1 end_log_pos 508737
#Append_block: file_id: 1 block_len: 16384
# at 508737
#130718 3:17:14 server id 1 end_log_pos 525144
#Append_block: file_id: 1 block_len: 16384
# at 525144
#130718 3:17:14 server id 1 end_log_pos 541551
#Append_block: file_id: 1 block_len: 16384
# at 541551
#130718 3:17:14 server id 1 end_log_pos 557958
#Append_block: file_id: 1 block_len: 16384
# at 557958
#130718 3:17:14 server id 1 end_log_pos 574365
#Append_block: file_id: 1 block_len: 16384
# at 574365
#130718 3:17:14 server id 1 end_log_pos 590772
#Append_block: file_id: 1 block_len: 16384
# at 590772
#130718 3:17:14 server id 1 end_log_pos 607179
#Append_block: file_id: 1 block_len: 16384
# at 607179
#130718 3:17:14 server id 1 end_log_pos 623586
#Append_block: file_id: 1 block_len: 16384
# at 623586
#130718 3:17:14 server id 1 end_log_pos 639993
#Append_block: file_id: 1 block_len: 16384
# at 639993
#130718 3:17:14 server id 1 end_log_pos 656400
#Append_block: file_id: 1 block_len: 16384
# at 656400
#130718 3:17:14 server id 1 end_log_pos 672807
#Append_block: file_id: 1 block_len: 16384
# at 672807
#130718 3:17:14 server id 1 end_log_pos 689214
#Append_block: file_id: 1 block_len: 16384
# at 689214
#130718 3:17:14 server id 1 end_log_pos 705621
#Append_block: file_id: 1 block_len: 16384
# at 705621
#130718 3:17:14 server id 1 end_log_pos 722028
#Append_block: file_id: 1 block_len: 16384
# at 722028
#130718 3:17:14 server id 1 end_log_pos 738435
#Append_block: file_id: 1 block_len: 16384
# at 738435
#130718 3:17:14 server id 1 end_log_pos 754842
#Append_block: file_id: 1 block_len: 16384
# at 754842
#130718 3:17:14 server id 1 end_log_pos 771249
#Append_block: file_id: 1 block_len: 16384
# at 771249
#130718 3:17:14 server id 1 end_log_pos 787656
#Append_block: file_id: 1 block_len: 16384
# at 787656
#130718 3:17:14 server id 1 end_log_pos 804063
#Append_block: file_id: 1 block_len: 16384
# at 804063
#130718 3:17:14 server id 1 end_log_pos 820470
#Append_block: file_id: 1 block_len: 16384
# at 820470
#130718 3:17:14 server id 1 end_log_pos 836877
#Append_block: file_id: 1 block_len: 16384
# at 836877
#130718 3:17:14 server id 1 end_log_pos 853284
#Append_block: file_id: 1 block_len: 16384
# at 853284
#130718 3:17:14 server id 1 end_log_pos 869691
#Append_block: file_id: 1 block_len: 16384
# at 869691
#130718 3:17:14 server id 1 end_log_pos 886098
#Append_block: file_id: 1 block_len: 16384
# at 886098
#130718 3:17:14 server id 1 end_log_pos 902505
#Append_block: file_id: 1 block_len: 16384
# at 902505
#130718 3:17:14 server id 1 end_log_pos 918912
#Append_block: file_id: 1 block_len: 16384
# at 918912
#130718 3:17:14 server id 1 end_log_pos 935319
#Append_block: file_id: 1 block_len: 16384
# at 935319
#130718 3:17:14 server id 1 end_log_pos 951726
#Append_block: file_id: 1 block_len: 16384
# at 951726
#130718 3:17:14 server id 1 end_log_pos 968133
#Append_block: file_id: 1 block_len: 16384
# at 968133
#130718 3:17:14 server id 1 end_log_pos 984540
#Append_block: file_id: 1 block_len: 16384
# at 984540
#130718 3:17:14 server id 1 end_log_pos 1000947
#Append_block: file_id: 1 block_len: 16384
# at 1000947
#130718 3:17:14 server id 1 end_log_pos 1017354
#Append_block: file_id: 1 block_len: 16384
# at 1017354
#130718 3:17:14 server id 1 end_log_pos 1033761
#Append_block: file_id: 1 block_len: 16384
# at 1033761
#130718 3:17:14 server id 1 end_log_pos 1050168
#Append_block: file_id: 1 block_len: 16384
# at 1050168
#130718 3:17:14 server id 1 end_log_pos 1066575
#Append_block: file_id: 1 block_len: 16384
# at 1066575
#130718 3:17:14 server id 1 end_log_pos 1082982
#Append_block: file_id: 1 block_len: 16384
# at 1082982
#130718 3:17:14 server id 1 end_log_pos 1099389
#Append_block: file_id: 1 block_len: 16384
# at 1099389
#130718 3:17:14 server id 1 end_log_pos 1115796
#Append_block: file_id: 1 block_len: 16384
# at 1115796
#130718 3:17:14 server id 1 end_log_pos 1132203
#Append_block: file_id: 1 block_len: 16384
# at 1132203
#130718 3:17:14 server id 1 end_log_pos 1148610
#Append_block: file_id: 1 block_len: 16384
# at 1148610
#130718 3:17:14 server id 1 end_log_pos 1165017
#Append_block: file_id: 1 block_len: 16384
# at 1165017
#130718 3:17:14 server id 1 end_log_pos 1181424
#Append_block: file_id: 1 block_len: 16384
# at 1181424
#130718 3:17:14 server id 1 end_log_pos 1197831
#Append_block: file_id: 1 block_len: 16384
# at 1197831
#130718 3:17:14 server id 1 end_log_pos 1214238
#Append_block: file_id: 1 block_len: 16384
# at 1214238
#130718 3:17:14 server id 1 end_log_pos 1230645
#Append_block: file_id: 1 block_len: 16384
# at 1230645
#130718 3:17:14 server id 1 end_log_pos 1247052
#Append_block: file_id: 1 block_len: 16384
# at 1247052
#130718 3:17:14 server id 1 end_log_pos 1263459
#Append_block: file_id: 1 block_len: 16384
# at 1263459
#130718 3:17:14 server id 1 end_log_pos 1279866
#Append_block: file_id: 1 block_len: 16384
# at 1279866
#130718 3:17:14 server id 1 end_log_pos 1296273
#Append_block: file_id: 1 block_len: 16384
# at 1296273
#130718 3:17:14 server id 1 end_log_pos 1312680
#Append_block: file_id: 1 block_len: 16384
# at 1312680
#130718 3:17:14 server id 1 end_log_pos 1329087
#Append_block: file_id: 1 block_len: 16384
# at 1329087
#130718 3:17:14 server id 1 end_log_pos 1345494
.........
#Append_block: file_id: 1 block_len: 16384
# at 4298754
#130718 3:17:14 server id 1 end_log_pos 4315161
#Append_block: file_id: 1 block_len: 16384
# at 4315161
#130718 3:17:14 server id 1 end_log_pos 4331568
#Append_block: file_id: 1 block_len: 16384
# at 4331568
#130718 3:17:14 server id 1 end_log_pos 4347975
#Append_block: file_id: 1 block_len: 16384
# at 4347975
#130718 3:17:14 server id 1 end_log_pos 4364382
#Append_block: file_id: 1 block_len: 16384
# at 4364382
#130718 3:17:14 server id 1 end_log_pos 4380789
#Append_block: file_id: 1 block_len: 16384
# at 4380789
#130718 3:17:14 server id 1 end_log_pos 4397196
#Append_block: file_id: 1 block_len: 16384
# at 4397196
#130718 3:17:14 server id 1 end_log_pos 4413603
#Append_block: file_id: 1 block_len: 16384
# at 4413603
#130718 3:17:14 server id 1 end_log_pos 4430010
#Append_block: file_id: 1 block_len: 16384
# at 4430010
#130718 3:17:14 server id 1 end_log_pos 4446417
#Append_block: file_id: 1 block_len: 16384
# at 4446417
#130718 3:17:14 server id 1 end_log_pos 4462824
#Append_block: file_id: 1 block_len: 16384
# at 4462824
#130718 3:17:14 server id 1 end_log_pos 4479231
#Append_block: file_id: 1 block_len: 16384
# at 4479231
#130718 3:17:14 server id 1 end_log_pos 4495638
#Append_block: file_id: 1 block_len: 16384
# at 4495638
#130718 3:17:14 server id 1 end_log_pos 4512045
#Append_block: file_id: 1 block_len: 16384
# at 4512045
#130718 3:17:14 server id 1 end_log_pos 4528452
#Append_block: file_id: 1 block_len: 16384
# at 4528452
#130718 3:17:14 server id 1 end_log_pos 4544859
#Append_block: file_id: 1 block_len: 16384
# at 4544859
#130718 3:17:14 server id 1 end_log_pos 4561266
#Append_block: file_id: 1 block_len: 16384
# at 4561266
#130718 3:17:14 server id 1 end_log_pos 4577673
#Append_block: file_id: 1 block_len: 16384
# at 4577673
#130718 3:17:14 server id 1 end_log_pos 4594080
#Append_block: file_id: 1 block_len: 16384
# at 4594080
#130718 3:17:14 server id 1 end_log_pos 4610487
#Append_block: file_id: 1 block_len: 16384
# at 4610487
#130718 3:17:14 server id 1 end_log_pos 4626894
#Append_block: file_id: 1 block_len: 16384
# at 4626894
#130718 3:17:14 server id 1 end_log_pos 4643301
#Append_block: file_id: 1 block_len: 16384
# at 4643301
#130718 3:17:14 server id 1 end_log_pos 4659708
#Append_block: file_id: 1 block_len: 16384
# at 4659708
#130718 3:17:14 server id 1 end_log_pos 4676115
#Append_block: file_id: 1 block_len: 16384
# at 4676115
#130718 3:17:14 server id 1 end_log_pos 4692522
#Append_block: file_id: 1 block_len: 16384
# at 4692522
#130718 3:17:14 server id 1 end_log_pos 4708929
#Append_block: file_id: 1 block_len: 16384
# at 4708929
#130718 3:17:14 server id 1 end_log_pos 4725336
#Append_block: file_id: 1 block_len: 16384
# at 4725336
#130718 3:17:14 server id 1 end_log_pos 4735417
#Append_block: file_id: 1 block_len: 10058
# at 4735417
#130718 3:17:14 server id 1 end_log_pos 4735701 Execute_load_query thread_id=98119 exec_time=2 error_code=0
SET TIMESTAMP=1374117434/*!*/;
LOAD DATA LOCAL INFILE '/tmp/SQL_LOAD_MB-1-0' INTO TABLE `table` FIELDS TERMINATED BY '\t' ENCLOSED BY '' ESCAPED BY '\\' LINES TERMINATED BY '\n' (`c1`, `c2`, `c3`, `
c4`, `c5`, `c6`, `c7`, `c8`, `c9`)
/*!*/;
# file_id: 1
# at 4735701
#130718 3:17:14 server id 1 end_log_pos 4735728 Xid = 297745
COMMIT/*!*/;
DELIMITER ;
# End of log file
ROLLBACK /* added by mysqlbinlog */;
/*!50003 SET ;
確實沒有insert之類的sql語句，當用binlog日誌進行恢復的時候，會報錯的，所以在生產環境上面，最好不要使用load data的方式進行資料匯入。以免需要及時恢復資料的時候發生異常。
-- 察看binlog事件,會看到最後的load data local infile紀錄.
- mysql> show binlog events in "mysql-bin.000001";
- ......
- | mysql-bin.000001 | 4708929 | Append_block | 1 | 4725336 | ;file_id=1;block_len=16384 |
- | mysql-bin.000001 | 4725336 | Append_block | 1 | 4735417 | ;file_id=1;block_len=10058 |
- | mysql-bin.000001 | 4735417 | Execute_load_query | 1 | 4735701 | use `test`; LOAD DATA LOCAL INFILE '/root/table.txt' IGNORE INTO TABLE `table` FIELDS TERMINATED BY '\t' ENCLOSED BY '' ESCAPED BY '\\' LINES TERMINATED BY '\n' (`c1`, `c2`, `c3`, `c4`, `c5`, `c6`, `c7`, `c8`, `c9`) ;file_id=1 |
- | mysql-bin.000001 | 4735701 | Xid | 1 | 4735728 | COMMIT /* xid=297745 */
-- 再察看從庫資料也都同步複製過去了,再看從庫的binlog日誌
# at 31990800
#130718 11:15:02 server id 1 end_log_pos 31991105 Query thread_id=97960 exec_time=4294967292 error_code=0
use test/*!*/;
SET TIMESTAMP=1374117302/*!*/;
SET @@session.sql_mode=0/*!*/;
/*!\C utf8 *//*!*/;
SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=33/*!*/;
create table `test`.`table`(
`c1` varchar(20) ,
`c2` varchar(20) ,
`c3` varchar(20) ,
`c4` varchar(20) ,
`c5` varchar(20) ,
`c6` varchar(20) ,
`c7` varchar(20) ,
`c8` varchar(20) ,
`c9` varchar(20)
)
/*!*/;
# at 31991105
#130718 11:17:14 server id 1 end_log_pos 31991169 Query thread_id=98119 exec_time=4 error_code=0
SET TIMESTAMP=1374117434/*!*/;
SET @@session.sql_mode=4194304/*!*/;
BEGIN
/*!*/;
# at 31991169
#130718 11:17:14 server id 1 end_log_pos 34088344
#Begin_load_query: file_id: 1 block_len: 2097152
# at 34088344
#130718 11:17:14 server id 1 end_log_pos 36185519
#Append_block: file_id: 1 block_len: 2097152
# at 36185519
#130718 11:17:14 server id 1 end_log_pos 36572432
#Append_block: file_id: 1 block_len: 386890
# at 36572432
#130718 11:17:14 server id 1 end_log_pos 36572723 Execute_load_query thread_id=98119 exec_time=4 error_code=0
SET TIMESTAMP=1374117434/*!*/;
LOAD DATA LOCAL INFILE '/tmp/SQL_LOAD_MB-1-0' INTO TABLE `table` FIELDS TERMINATED BY '\t' ENCLOSED BY '' ESCAPED BY '\\' LINES TERMINATED BY '\n' (`c1`, `c2`, `c3`, `c4`, `c5`, `c6`, `c7`, `c8`, `c9`)
/*!*/;
# file_id: 1
# at 36572723
#130718 11:17:14 server id 1 end_log_pos 36572750 Xid = 839475877
COMMIT/*!*/;
-- 再去主庫從庫上面的tmp目錄察看臨時檔案存在情況,果然看到SQL_LOAD_MB-1-0檔案存在.
[root@eanshlt2mydbc001db002 tmp]# ll -t /tmp/ |more
total 2212772
-rw-r----- 1 root root 4581194 Jul 18 11:46 SQL_LOAD_MB-1-0
疑惑之一：不過我看到binlog裡面有這麼一句，LOAD DATA LOCAL INFILE '/tmp/SQL_LOAD_MB-1-0' INTO TABLE `table` FIELDS TERMINATED BY '\t' ENCLOSED BY '' ESCAPED BY '\\' LINES TERMINATED BY '\n' (`c1`, `c2`, `c3`, `
c4`, `c5`, `c6`, `c7`, `c8`, `c9`)
如果'/tmp/SQL_LOAD_MB-1-0'檔案存在的話，是否可以從binlog進行資料恢復呢？
來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/23490154/viewspace-1062507/，如需轉載，請註明出處，否則將追究法律責任。
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