{"id":4018,"date":"2022-11-16T09:49:55","date_gmt":"2022-11-16T01:49:55","guid":{"rendered":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=4018"},"modified":"2022-11-16T09:49:55","modified_gmt":"2022-11-16T01:49:55","slug":"mysql%e7%9a%84%e4%b8%80%e4%ba%9b%e4%bc%98%e5%8c%96%e6%93%8d%e4%bd%9c%ef%bc%8c%e6%8a%84%e6%9d%a5%e5%a4%87%e5%bf%98","status":"publish","type":"post","link":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=4018","title":{"rendered":"mysql\u7684\u4e00\u4e9b\u4f18\u5316\u64cd\u4f5c\uff0c\u6284\u6765\u5907\u5fd8"},"content":{"rendered":"\n

XX \u5b9e\u4f8b\uff08\u4e00\u4e3b\u4e00\u4ece\uff09xxx \u544a\u8b66\u4e2d\u6bcf\u5929\u51cc\u6668\u5728\u62a5 SLA \u62a5\u8b66\uff0c\u8be5\u62a5\u8b66\u7684\u610f\u601d\u662f\u5b58\u5728\u4e00\u5b9a\u7684\u4e3b\u4ece\u5ef6\u8fdf\u3002\uff08\u82e5\u5728\u6b64\u65f6\u53d1\u751f\u4e3b\u4ece\u5207\u6362\uff0c\u9700\u8981\u957f\u65f6\u95f4\u624d\u53ef\u4ee5\u5b8c\u6210\u5207\u6362\uff0c\u8981\u8ffd\u5ef6\u8fdf\u6765\u4fdd\u8bc1\u4e3b\u4ece\u6570\u636e\u7684\u4e00\u81f4\u6027\uff09<\/p>\n\n\n\n

XX\u5b9e\u4f8b\u7684\u6162\u67e5\u8be2\u6570\u91cf\u6700\u591a\uff08\u6267\u884c\u65f6\u95f4\u8d85\u8fc7 1s \u7684 SQL \u4f1a\u88ab\u8bb0\u5f55\uff09\uff0cXX \u5e94\u7528\u90a3\u65b9\u6bcf\u5929\u665a\u4e0a\u5728\u505a\u5220\u9664\u4e00\u4e2a\u6708\u524d\u6570\u636e\u7684\u4efb\u52a1\u3002<\/p>\n\n\n\n

\u5206\u6790<\/strong><\/p>\n\n\n\n

\u4f7f\u7528pt-query-digest<\/code> \u5de5\u5177\u5206\u6790\u6700\u8fd1\u4e00\u5468\u7684 mysql-slow.log<\/code>\uff1a<\/p>\n\n\n\n

pt-query-digest --since=148h mysql-slow.log | less
<\/code><\/pre>\n\n\n\n
\u7ed3\u679c\u7b2c\u4e00\u90e8\u5206\uff1a<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u6700\u8fd1\u4e00\u4e2a\u661f\u671f\u5185\uff0c\u603b\u5171\u8bb0\u5f55\u7684\u6162\u67e5\u8be2\u6267\u884c\u82b1\u8d39\u65f6\u95f4\u4e3a 25403s\uff0c\u6700\u5927\u7684\u6162 SQL \u6267\u884c\u65f6\u95f4\u4e3a 266s\uff0c\u5e73\u5747\u6bcf\u4e2a\u6162 SQL \u6267\u884c\u65f6\u95f4 5s\uff0c\u5e73\u5747\u626b\u63cf\u7684\u884c\u6570\u4e3a 1766 \u4e07\u3002<\/p>\n\n\n\n
\u7ed3\u679c\u7b2c\u4e8c\u90e8\u5206\uff1a<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
select arrival_record<\/code>\u64cd\u4f5c\u8bb0\u5f55\u7684\u6162\u67e5\u8be2\u6570\u91cf\u6700\u591a\u6709 4 \u4e07\u591a\u6b21\uff0c\u5e73\u5747\u54cd\u5e94\u65f6\u95f4\u4e3a 4s\uff0cdelete arrival_record<\/code> \u8bb0\u5f55\u4e86 6 \u6b21\uff0c\u5e73\u5747\u54cd\u5e94\u65f6\u95f4 258s\u3002<\/p>\n\n\n\n
select xxx_record \u8bed\u53e5<\/h3>\n\n\n\n
select arrival_record<\/code> \u6162\u67e5\u8be2\u8bed\u53e5\u90fd\u7c7b\u4f3c\u4e8e\u5982\u4e0b\u6240\u793a\uff0cwhere \u8bed\u53e5\u4e2d\u7684\u53c2\u6570\u5b57\u6bb5\u662f\u4e00\u6837\u7684\uff0c\u4f20\u5165\u7684\u53c2\u6570\u503c\u4e0d\u4e00\u6837\uff1a<\/p>\n\n\n\n
select count<\/strong>(*) from arrival_record where product_id=26 and receive_time between '2019-03-25 14:00:00' and '2019-03-25 15:00:00' and receive_spend_ms>=0\\G
<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
select arrival_record<\/code> \u8bed\u53e5\u5728 MySQL \u4e2d\u6700\u591a\u626b\u63cf\u7684\u884c\u6570\u4e3a 5600 \u4e07\u3001\u5e73\u5747\u626b\u63cf\u7684\u884c\u6570\u4e3a 172 \u4e07\uff0c\u63a8\u65ad\u7531\u4e8e\u626b\u63cf\u7684\u884c\u6570\u591a\u5bfc\u81f4\u7684\u6267\u884c\u65f6\u95f4\u957f\u3002<\/p>\n\n\n\n
\u67e5\u770b\u6267\u884c\u8ba1\u5212\uff1a<\/p>\n\n\n\n
explain select count<\/strong>(*) from arrival_record where product_id=26 and receive_time between '2019-03-25 14:00:00' and '2019-03-25 15:00:00' and receive_spend_ms>=0\\G;
*************************** 1. row ***************************
id: 1
select_type: SIMPLE
table: arrival_record
partitions: NULL
type: ref
possible_keys: IXFK_arrival_record
key: IXFK_arrival_record
key_len: 8
ref: const<\/strong>
rows: 32261320
filtered: 3.70
Extra: Using index condition; Using where
1 row in set, 1 warning (0.00 sec)
<\/code><\/pre>\n\n\n\n
\u7528\u5230\u4e86\u7d22\u5f15 IXFK_arrival_record<\/code>\uff0c\u4f46\u9884\u8ba1\u626b\u63cf\u7684\u884c\u6570\u5f88\u591a\u6709 3000 \u591a\u4e07\u884c\uff1a<\/p>\n\n\n\n
show index from arrival_record;
+----------------+------------+---------------------+--------------+--------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| Table | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment |
+----------------+------------+---------------------+--------------+--------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| arrival_record | 0 | PRIMARY | 1 | id | A | 107990720 | NULL | NULL | | BTREE | | |
| arrival_record | 1 | IXFK_arrival_record | 1 | product_id | A | 1344 | NULL | NULL | | BTREE | | |
| arrival_record | 1 | IXFK_arrival_record | 2 | station_no | A | 22161 | NULL | NULL | YES | BTREE | | |
| arrival_record | 1 | IXFK_arrival_record | 3 | sequence | A | 77233384 | NULL | NULL | | BTREE | | |
| arrival_record | 1 | IXFK_arrival_record | 4 | receive_time | A | 65854652 | NULL | NULL | YES | BTREE | | |
| arrival_record | 1 | IXFK_arrival_record | 5 | arrival_time | A | 73861904 | NULL | NULL | YES | BTREE | | |
+----------------+------------+---------------------+--------------+--------------+-----------+-------------+----------+--------+------+------------+---------+---------------+

show create table arrival_record;
..........
arrival_spend_ms bigint<\/strong>(20) DEFAULT NULL,
total_spend_ms bigint<\/strong>(20) DEFAULT NULL,
PRIMARY KEY<\/strong> (id),
KEY IXFK_arrival_record<\/strong> (product_id,station_no,sequence,receive_time,arrival_time) USING BTREE,
CONSTRAINT FK_arrival_record_product FOREIGN KEY<\/strong> (product_id) REFERENCES product<\/strong> (id) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB AUTO_INCREMENT=614538979 DEFAULT CHARSET=utf8 COLLATE=utf8_bin |
<\/code><\/pre>\n\n\n\n
\u2460\u8be5\u8868\u603b\u8bb0\u5f55\u6570\u7ea6 1 \u4ebf\u591a\u6761\uff0c\u8868\u4e0a\u53ea\u6709\u4e00\u4e2a\u590d\u5408\u7d22\u5f15\uff0cproduct_id<\/code> \u5b57\u6bb5\u57fa\u6570\u5f88\u5c0f\uff0c\u9009\u62e9\u6027\u4e0d\u597d\u3002<\/p>\n\n\n\n
\u2461\u4f20\u5165\u7684\u8fc7\u6ee4\u6761\u4ef6\uff1a<\/p>\n\n\n\n
where product_id=26 and receive_time between '2019-03-25 14:00:00' and '2019-03-25 15:00:00' and receive_spend_ms>=0
<\/code><\/pre>\n\n\n\n
\u6ca1\u6709station_nu<\/code> \u5b57\u6bb5\uff0c\u4f7f\u7528\u4e0d\u5230\u590d\u5408\u7d22\u5f15 IXFK_arrival_record<\/code> \u7684 product_id<\/code>\uff0cstation_no<\/code>\uff0csequence<\/code>\uff0creceive_time<\/code> \u8fd9\u51e0\u4e2a\u5b57\u6bb5\u3002<\/p>\n\n\n\n
\u2462\u6839\u636e\u6700\u5de6\u524d\u7f00\u539f\u5219\uff0cselect arrival_record<\/code> \u53ea\u7528\u5230\u4e86\u590d\u5408\u7d22\u5f15 IXFK_arrival_record<\/code> \u7684\u7b2c\u4e00\u4e2a\u5b57\u6bb5 product_id<\/code>\uff0c\u800c\u8be5\u5b57\u6bb5\u9009\u62e9\u6027\u5f88\u5dee\uff0c\u5bfc\u81f4\u626b\u63cf\u7684\u884c\u6570\u5f88\u591a\uff0c\u6267\u884c\u65f6\u95f4\u957f\u3002<\/p>\n\n\n\n
\u2463receive_time<\/code> \u5b57\u6bb5\u7684\u57fa\u6570\u5927\uff0c\u9009\u62e9\u6027\u597d\uff0c\u53ef\u5bf9\u8be5\u5b57\u6bb5\u5355\u72ec\u5efa\u7acb\u7d22\u5f15\uff0cselect arrival_record sql<\/code> \u5c31\u4f1a\u4f7f\u7528\u5230\u8be5\u7d22\u5f15\u3002<\/p>\n\n\n\n
\u73b0\u5728\u5df2\u7ecf\u77e5\u9053\u4e86\u5728\u6162\u67e5\u8be2\u4e2d\u8bb0\u5f55\u7684 select arrival_record where<\/code> \u8bed\u53e5\u4f20\u5165\u7684\u53c2\u6570\u5b57\u6bb5\u6709 product_id<\/code>\uff0creceive_time<\/code>\uff0creceive_spend_ms<\/code>\uff0c\u8fd8\u60f3\u77e5\u9053\u5bf9\u8be5\u8868\u7684\u8bbf\u95ee\u6709\u6ca1\u6709\u901a\u8fc7\u5176\u4ed6\u5b57\u6bb5\u6765\u8fc7\u6ee4\u4e86<\/p>\n\n\n\n
\u795e\u5668tcpdump<\/code> \u51fa\u573a\u7684\u65f6\u5019\u5230\u4e86\uff0c\u4f7f\u7528 tcpdump<\/code> \u6293\u5305\u4e00\u6bb5\u65f6\u95f4\u5bf9\u8be5\u8868\u7684 select<\/code> \u8bed\u53e5\uff1a<\/p>\n\n\n\n
tcpdump -i bond0 -s 0 -l -w - dst port 3316 | strings | grep select | egrep -i 'arrival_record' >\/tmp\/select_arri.log
<\/code><\/pre>\n\n\n\n
\u83b7\u53d6select \u8bed\u53e5\u4e2d from \u540e\u9762\u7684 where \u6761\u4ef6\u8bed\u53e5\uff1a<\/p>\n\n\n\n
IFS_OLD=$IFS
IFS=$'\\n'
for<\/strong> i in cat \/tmp\/select_arri.log ;do<\/strong> echo ${i#*'from'}; done | less
IFS=$IFS_OLD

arrival_record arrivalrec0_ where arrivalrec0_.sequence='2019-03-27 08:40' and arrivalrec0_.product_id=17 and arrivalrec0_.station_no='56742'
arrival_record arrivalrec0_ where arrivalrec0_.sequence='2019-03-27 08:40' and arrivalrec0_.product_id=22 and arrivalrec0_.station_no='S7100'
arrival_record arrivalrec0_ where arrivalrec0_.sequence='2019-03-27 08:40' and arrivalrec0_.product_id=24 and arrivalrec0_.station_no='V4631'
arrival_record arrivalrec0_ where arrivalrec0_.sequence='2019-03-27 08:40' and arrivalrec0_.product_id=22 and arrivalrec0_.station_no='S9466'
arrival_record arrivalrec0_ where arrivalrec0_.sequence='2019-03-27 08:40' and arrivalrec0_.product_id=24 and arrivalrec0_.station_no='V4205'
arrival_record arrivalrec0_ where arrivalrec0_.sequence='2019-03-27 08:40' and arrivalrec0_.product_id=24 and arrivalrec0_.station_no='V4105'
arrival_record arrivalrec0_ where arrivalrec0_.sequence='2019-03-27 08:40' and arrivalrec0_.product_id=24 and arrivalrec0_.station_no='V4506'
arrival_record arrivalrec0_ where arrivalrec0_.sequence='2019-03-27 08:40' and arrivalrec0_.product_id=24 and arrivalrec0_.station_no='V4617'
arrival_record arrivalrec0_ where arrivalrec0_.sequence='2019-03-27 08:40' and arrivalrec0_.product_id=22 and arrivalrec0_.station_no='S8356'
arrival_record arrivalrec0_ where arrivalrec0_.sequence='2019-03-27 08:40' and arrivalrec0_.product_id=22 and arrivalrec0_.station_no='S8356'
<\/code><\/pre>\n\n\n\n
select<\/code> \u8be5\u8868 where<\/code> \u6761\u4ef6\u4e2d\u6709 product_id<\/code>\uff0cstation_no<\/code>\uff0csequence<\/code> \u5b57\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528\u5230\u590d\u5408\u7d22\u5f15 IXFK_arrival_record<\/code> \u7684\u524d\u4e09\u4e2a\u5b57\u6bb5\u3002<\/p>\n\n\n\n
\u7efc\u4e0a\u6240\u793a\uff0c\u4f18\u5316\u65b9\u6cd5\u4e3a\uff1a<\/p>\n\n\n\n
    \n
  • \u5220\u9664\u590d\u5408\u7d22\u5f15  IXFK_arrival_record<\/li>\n\n\n\n
  • \u5efa\u7acb\u590d\u5408\u7d22\u5f15  idx_sequence_station_no_product_id<\/li>\n\n\n\n
  • \u5efa\u7acb\u5355\u72ec\u7d22\u5f15  indx_receive_time<\/li>\n<\/ul>\n\n\n\n
    delete xxx_record \u8bed\u53e5<\/h3>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    \u8be5delete<\/code> \u64cd\u4f5c\u5e73\u5747\u626b\u63cf\u884c\u6570\u4e3a 1.1 \u4ebf\u884c\uff0c\u5e73\u5747\u6267\u884c\u65f6\u95f4\u662f 262s\u3002<\/p>\n\n\n\n
    delete<\/code> \u8bed\u53e5\u5982\u4e0b\u6240\u793a\uff0c\u6bcf\u6b21\u8bb0\u5f55\u7684\u6162\u67e5\u8be2\u4f20\u5165\u7684\u53c2\u6570\u503c\u4e0d\u4e00\u6837\uff1a<\/p>\n\n\n\n
    delete from arrival_record where receive_time < STR_TO_DATE('2019-02-23', '%Y-%m-%d')\\G
    <\/code><\/pre>\n\n\n\n
    \u6267\u884c\u8ba1\u5212\uff1a<\/p>\n\n\n\n
    explain select * from arrival_record where receive_time < STR_TO_DATE('2019-02-23', '%Y-%m-%d')\\G
    *************************** 1. row ***************************
    id: 1
    select_type: SIMPLE
    table: arrival_record
    partitions: NULL
    type: ALL
    possible_keys: NULL
    key: NULL
    key_len: NULL
    ref: NULL
    rows: 109501508
    filtered: 33.33
    Extra: Using where
    1 row in set, 1 warning (0.00 sec)
    <\/code><\/pre>\n\n\n\n
    \u8be5delete<\/code> \u8bed\u53e5\u6ca1\u6709\u4f7f\u7528\u7d22\u5f15\uff08\u6ca1\u6709\u5408\u9002\u7684\u7d22\u5f15\u53ef\u7528\uff09\uff0c\u8d70\u7684\u5168\u8868\u626b\u63cf\uff0c\u5bfc\u81f4\u6267\u884c\u65f6\u95f4\u957f\u3002<\/p>\n\n\n\n
    \u4f18\u5316\u65b9\u6cd5\u4e5f\u662f\uff1a\u5efa\u7acb\u5355\u72ec\u7d22\u5f15 indx_receive_time(receive_time)<\/code>\u3002<\/p>\n\n\n\n
    \u6d4b\u8bd5<\/strong><\/p>\n\n\n\n
    \u62f7\u8d1darrival_record<\/code> \u8868\u5230\u6d4b\u8bd5\u5b9e\u4f8b\u4e0a\u8fdb\u884c\u5220\u9664\u91cd\u65b0\u7d22\u5f15\u64cd\u4f5c\u3002<\/p>\n\n\n\n
    XX\u5b9e\u4f8b arrival_record<\/code> \u8868\u4fe1\u606f\uff1a<\/p>\n\n\n\n
    du -sh \/datas\/mysql\/data\/3316\/cq_new_cimiss\/arrival_record*
    12K    \/datas\/mysql\/data\/3316\/cq_new_cimiss\/arrival_record.frm
    48G    \/datas\/mysql\/data\/3316\/cq_new_cimiss\/arrival_record.ibd

    select count<\/strong>() from cq_new_cimiss.arrival_record;
    +-----------+
    | count() |
    +-----------+
    | 112294946 |
    +-----------+
    1\u4ebf\u591a\u8bb0\u5f55\u6570

    SELECT
    table_name,
    CONCAT(FORMAT(SUM(data_length) \/ 1024 \/ 1024,2),'M') AS dbdata_size,
    CONCAT(FORMAT(SUM(index_length) \/ 1024 \/ 1024,2),'M') AS dbindex_size,
    CONCAT(FORMAT(SUM(data_length + index_length) \/ 1024 \/ 1024 \/ 1024,2),'G') AS table_size<\/strong>(G),
    AVG_ROW_LENGTH,table_rows,update_time
    FROM
    information_schema.tables
    WHERE table_schema = 'cq_new_cimiss' and table_name='arrival_record';

    +----------------+-------------+--------------+------------+----------------+------------+---------------------+
    | table_name | dbdata_size | dbindex_size | table_size(G) | AVG_ROW_LENGTH | table_rows | update_time |
    +----------------+-------------+--------------+------------+----------------+------------+---------------------+
    | arrival_record | 18,268.02M | 13,868.05M | 31.38G | 175 | 109155053 | 2019-03-26 12:40:17 |
    +----------------+-------------+--------------+------------+----------------+------------+---------------------+
    <\/code><\/pre>\n\n\n\n
    \u78c1\u76d8\u5360\u7528\u7a7a\u95f4 48G\uff0cMySQL \u4e2d\u8be5\u8868\u5927\u5c0f\u4e3a 31G\uff0c\u5b58\u5728 17G \u5de6\u53f3\u7684\u788e\u7247\uff0c\u5927\u591a\u7531\u4e8e\u5220\u9664\u64cd\u4f5c\u9020\u6210\u7684\u3002\uff08\u8bb0\u5f55\u88ab\u5220\u9664\u4e86\uff0c\u7a7a\u95f4\u6ca1\u6709\u56de\u6536)<\/p>\n\n\n\n
    \u5907\u4efd\u8fd8\u539f\u8be5\u8868\u5230\u65b0\u7684\u5b9e\u4f8b\u4e2d\uff0c\u5220\u9664\u539f\u6765\u7684\u590d\u5408\u7d22\u5f15\uff0c\u91cd\u65b0\u6dfb\u52a0\u7d22\u5f15\u8fdb\u884c\u6d4b\u8bd5\u3002<\/p>\n\n\n\n
    mydumper \u5e76\u884c\u538b\u7f29\u5907\u4efd\uff1a<\/p>\n\n\n\n
     user=root
      passwd=xxxx
     socket=\/datas\/mysql\/data\/3316\/mysqld.sock
     db=cq_new_cimiss
     table_name=arrival_record
     backupdir=\/datas\/dump_$table_name
     mkdir -p $backupdir

       nohup echo date +%T && mydumper -u $user -p $passwd -S $socket  -B $db -c  -T $table_name  -o $backupdir  -t 32 -r 2000000 && echo date +%T &
    <\/code><\/pre>\n\n\n\n
    \u5e76\u884c\u538b\u7f29\u5907\u4efd\u6240\u82b1\u65f6\u95f4\uff0852s\uff09\u548c\u5360\u7528\u7a7a\u95f4\uff081.2G\uff0c\u5b9e\u9645\u8be5\u8868\u5360\u7528\u78c1\u76d8\u7a7a\u95f4\u4e3a 48G\uff0cmydumper \u5e76\u884c\u538b\u7f29\u5907\u4efd\u538b\u7f29\u6bd4\u76f8\u5f53\u9ad8\uff09\uff1a<\/p>\n\n\n\n
    Started dump at: 2019-03-26 12:46:04
    ........

    Finished dump at: 2019-03-26 12:46:56

    du -sh   \/datas\/dump_arrival_record\/
    1.2G    \/datas\/dump_arrival_record\/
    <\/code><\/pre>\n\n\n\n
    \u62f7\u8d1ddump \u6570\u636e\u5230\u6d4b\u8bd5\u8282\u70b9\uff1a<\/p>\n\n\n\n
    scp -rp \/datas\/dump_arrival_record root@10.230.124.19:\/datas
    <\/code><\/pre>\n\n\n\n
    \u591a\u7ebf\u7a0b\u5bfc\u5165\u6570\u636e\uff1a<\/p>\n\n\n\n
    time myloader -u root -S \/datas\/mysql\/data\/3308\/mysqld.sock -P 3308 -p root -B test -d \/datas\/dump_arrival_record -t 32

    real 126m42.885s
    user 1m4.543s
    sys 0m4.267s
    <\/code><\/pre>\n\n\n\n
    \u903b\u8f91\u5bfc\u5165\u8be5\u8868\u540e\u78c1\u76d8\u5360\u7528\u7a7a\u95f4\uff1a<\/p>\n\n\n\n
    du -h -d 1 \/datas\/mysql\/data\/3308\/test\/arrival_record.*
    12K \/datas\/mysql\/data\/3308\/test\/arrival_record.frm
    30G \/datas\/mysql\/data\/3308\/test\/arrival_record.ibd
    <\/code><\/pre>\n\n\n\n
    \u6ca1\u6709\u788e\u7247\uff0c\u548cmysql\u7684\u8be5\u8868\u7684\u5927\u5c0f\u4e00\u81f4<\/p>\n\n\n\n
    cp -rp \/datas\/mysql\/data\/3308 \/datas
    <\/code><\/pre>\n\n\n\n
    \u5206\u522b\u4f7f\u7528 online DDL<\/code> \u548c pt-osc<\/code> \u5de5\u5177\u6765\u505a\u5220\u9664\u91cd\u5efa\u7d22\u5f15\u64cd\u4f5c\u3002<\/p>\n\n\n\n
    \u5148\u5220\u9664\u5916\u952e\uff0c\u4e0d\u5220\u9664\u5916\u952e\uff0c\u65e0\u6cd5\u5220\u9664\u590d\u5408\u7d22\u5f15\uff0c\u5916\u952e\u5217\u5c5e\u4e8e\u590d\u5408\u7d22\u5f15\u4e2d\u7b2c\u4e00\u5217\uff1a<\/p>\n\n\n\n
    nohup bash \/tmp\/ddl_index.sh &
    2019-04-04-10:41:39 begin stop mysqld_3308
    2019-04-04-10:41:41 begin rm -rf datadir and cp -rp datadir_bak
    2019-04-04-10:46:53 start mysqld_3308
    2019-04-04-10:46:59 online ddl begin
    2019-04-04-11:20:34 onlie ddl stop
    2019-04-04-11:20:34 begin stop mysqld_3308
    2019-04-04-11:20:36 begin rm -rf datadir and cp -rp datadir_bak
    2019-04-04-11:22:48 start mysqld_3308
    2019-04-04-11:22:53 pt-osc begin
    2019-04-04-12:19:15 pt-osc stop
    <\/code><\/pre>\n\n\n\n
    online DDL<\/code> \u82b1\u8d39\u65f6\u95f4\u4e3a 34 \u5206\u949f\uff0cpt-osc \u82b1\u8d39\u65f6\u95f4\u4e3a 57 \u5206\u949f\uff0c\u4f7f\u7528 onlne DDL<\/code> \u65f6\u95f4\u7ea6\u4e3a pt-osc<\/code> \u5de5\u5177\u65f6\u95f4\u7684\u4e00\u534a\u3002<\/p>\n\n\n\n
    \u505aDDL \u53c2\u8003\uff1a<\/p>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    \u7531\u4e8e\u662f\u4e00\u4e3b\u4e00\u4ece\u5b9e\u4f8b\uff0c\u5e94\u7528\u662f\u8fde\u63a5\u7684 vip\uff0c\u5220\u9664\u91cd\u5efa\u7d22\u5f15\u91c7\u7528 online DDL \u6765\u505a\u3002<\/p>\n\n\n\n
    \u505c\u6b62\u4e3b\u4ece\u590d\u5236\u540e\uff0c\u5148\u5728\u4ece\u5b9e\u4f8b\u4e0a\u505a\uff08\u4e0d\u8bb0\u5f55 binlog\uff09\uff0c\u4e3b\u4ece\u5207\u6362\uff0c\u518d\u5728\u65b0\u5207\u6362\u7684\u4ece\u5b9e\u4f8b\u4e0a\u505a\uff08\u4e0d\u8bb0\u5f55 binlog)\uff1a<\/p>\n\n\n\n
    function red_echo<\/strong> () {

            local what=\"$*\"
            echo -e \"$(date +%F-%T)  ${what}\"
    }

    function check_las_comm<\/strong>(){
        if<\/strong> [ \"$1\" != \"0\" ];then
            red_echo \"$2\"
            echo \"exit 1\"
            exit 1
        fi
    }

    red_echo \"stop slave\"
    mysql -uroot -p$passwd --socket=\/datas\/mysql\/data\/${port}\/mysqld.sock -e\"stop slave\"
    check_las_comm \"$?\" \"stop slave failed\"

    red_echo \"online ddl begin\"
     mysql -uroot -p$passwd --socket=\/datas\/mysql\/data\/${port}\/mysqld.sock -e\"set sql_log_bin=0;select now() as  ddl_start;ALTER TABLE $db_.\\${table_name}\\ DROP FOREIGN KEY FK_arrival_record_product,drop index IXFK_arrival_record,add index idx_product_id_sequence_station_no(product_id,sequence,station_no),add index idx_receive_time(receive_time);select now() as ddl_stop\" >>`${log_file} 2>`& 1
     red_echo \"onlie ddl stop\"
     red_echo \"add foreign key\"
     mysql -uroot -p$passwd --socket=\/datas\/mysql\/data\/${port}\/mysqld.sock -e\"set sql_log_bin=0;ALTER TABLE $db_.${table_name} ADD CONSTRAINT _FK_${table_name}_product FOREIGN KEY (product_id) REFERENCES cq_new_cimiss.product (id) ON DELETE NO ACTION ON UPDATE NO ACTION;\" >>${log_file} 2>& 1
     check_las_comm \"$?\" \"add foreign key error\"
     red_echo \"add foreign key stop\"

    red_echo \"start slave\"
    mysql -uroot -p$passwd --socket=\/datas\/mysql\/data\/${port}\/mysqld.sock -e\"start slave\"
    check_las_comm \"$?\" \"start slave failed\"
    <\/code><\/pre>\n\n\n\n
    \u6267\u884c\u65f6\u95f4\uff1a<\/p>\n\n\n\n
    2019-04-08-11:17:36 stop slave
    mysql: [Warning] Using a password on the command line interface<\/strong> can<\/strong> be<\/strong> insecure<\/strong>.
    ddl_start<\/strong>
    2019-04-08 11:17:36
    ddl_stop<\/strong>
    2019-04-08 11:45:13
    2019-04-08-11:45:13 onlie<\/strong> ddl<\/strong> stop<\/strong>
    2019-04-08-11:45:13 add<\/strong> foreign<\/strong> key<\/strong>
    mysql<\/strong>: [Warning<\/strong>] Using<\/strong> a<\/strong> password<\/strong> on<\/strong> the<\/strong> command<\/strong> line<\/strong> interface<\/strong> can<\/strong> be<\/strong> insecure<\/strong>.
    2019-04-08-12:33:48 add<\/strong> foreign<\/strong> key<\/strong> stop<\/strong>
    2019-04-08-12:33:48 start<\/strong> slave<\/strong>
    <\/code><\/pre>\n\n\n\n
    \u5220\u9664\u91cd\u5efa\u7d22\u5f15\u82b1\u8d39\u65f6\u95f4\u4e3a 28 \u5206\u949f\uff0c\u6dfb\u52a0\u5916\u952e\u7ea6\u675f\u65f6\u95f4\u4e3a 48 \u5206\u949f\u3002<\/p>\n\n\n\n
    \u518d\u6b21\u67e5\u770b delete<\/code> \u548c select<\/code> \u8bed\u53e5\u7684\u6267\u884c\u8ba1\u5212\uff1a<\/p>\n\n\n\n
    explain select count<\/strong>(*) from arrival_record where receive_time < STR_TO_DATE<\/strong>('2019-03-10', '%Y-%m-%d')\\G
    *************************** 1. row ***************************
    id: 1
    select_type: SIMPLE
    table: arrival_record
    partitions: NULL
    type: range
    possible_keys: idx_receive_time
    key: idx_receive_time
    key_len: 6
    ref: NULL
    rows: 7540948
    filtered: 100.00
    Extra: Using where; Using index

    explain select count<\/strong>(*) from arrival_record where product_id=26 and receive_time between '2019-03-25 14:00:00' and '2019-03-25 15:00:00' and receive_spend_ms>=0\\G;
    *************************** 1. row ***************************
    id: 1
    select_type: SIMPLE
    table: arrival_record
    partitions: NULL
    type: range
    possible_keys: idx_product_id_sequence_station_no,idx_receive_time
    key: idx_receive_time
    key_len: 6
    ref: NULL
    rows: 291448
    filtered: 16.66
    Extra: Using index condition; Using where
    <\/code><\/pre>\n\n\n\n
    \u90fd\u4f7f\u7528\u5230\u4e86 idx_receive_time<\/code> \u7d22\u5f15\uff0c\u626b\u63cf\u7684\u884c\u6570\u5927\u5927\u964d\u4f4e\u3002<\/p>\n\n\n\n
    \u7d22\u5f15\u4f18\u5316\u540e<\/strong><\/p>\n\n\n\n
    delete \u8fd8\u662f\u82b1\u8d39\u4e86 77s \u65f6\u95f4\uff1a<\/p>\n\n\n\n
    delete from arrival_record where receive_time < STR_TO_DATE('2019-03-10', '%Y-%m-%d')\\G
    <\/code><\/pre>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    delete \u8bed\u53e5\u901a\u8fc7 receive_time<\/code> \u7684\u7d22\u5f15\u5220\u9664 300 \u591a\u4e07\u7684\u8bb0\u5f55\u82b1\u8d39 77s \u65f6\u95f4\u3002<\/p>\n\n\n\n
    delete \u5927\u8868\u4f18\u5316\u4e3a\u5c0f\u6279\u91cf\u5220\u9664<\/strong><\/p>\n\n\n\n
    \u5e94\u7528\u7aef\u5df2\u4f18\u5316\u6210\u6bcf\u6b21\u5220\u9664 10 \u5206\u949f\u7684\u6570\u636e\uff08\u6bcf\u6b21\u6267\u884c\u65f6\u95f4 1s \u5de6\u53f3\uff09\uff0cxxx \u4e2d\u6ca1\u5728\u51fa\u73b0 SLA\uff08\u4e3b\u4ece\u5ef6\u8fdf\u544a\u8b66\uff09\uff1a<\/p>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    \u53e6\u4e00\u4e2a\u65b9\u6cd5\u662f\u901a\u8fc7\u4e3b\u952e\u7684\u987a\u5e8f\u6bcf\u6b21\u5220\u9664 20000 \u6761\u8bb0\u5f55\uff1a<\/p>\n\n\n\n
    #\u5f97\u5230\u6ee1\u8db3\u65f6\u95f4\u6761\u4ef6\u7684\u6700\u5927\u4e3b\u952eID
    #\u901a\u8fc7\u6309\u7167\u4e3b\u952e\u7684\u987a\u5e8f\u53bb \u987a\u5e8f\u626b\u63cf\u5c0f\u6279\u91cf\u5220\u9664\u6570\u636e
    #\u5148\u6267\u884c\u4e00\u6b21\u4ee5\u4e0b\u8bed\u53e5
     SELECT MAX<\/strong>(id) INTO @need_delete_max_id FROM arrival_record WHERE receive_time`<'2019-03-01' ;
     DELETE FROM arrival_record WHERE id<@need_delete_max_id LIMIT 20000;
     select ROW_COUNT<\/strong>();  #\u8fd4\u56de20000
    #\u6267\u884c\u5c0f\u6279\u91cfdelete\u540e\u4f1a\u8fd4\u56derow_count(), \u5220\u9664\u7684\u884c\u6570
    #\u7a0b\u5e8f\u5224\u65ad\u8fd4\u56de\u7684row_count()\u662f\u5426\u4e3a0\uff0c\u4e0d\u4e3a0\u6267\u884c\u4ee5\u4e0b\u5faa\u73af\uff0c\u4e3a0\u9000\u51fa\u5faa\u73af\uff0c\u5220\u9664\u64cd\u4f5c\u5b8c\u6210
     DELETE FROM arrival_record WHERE id<@need_delete_max_id LIMIT 20000;
     select ROW_COUNT<\/strong>();
    #\u7a0b\u5e8f\u7761\u77200.5s
    <\/code><\/pre>\n\n\n\n
    \u603b\u7ed3<\/h2>\n\n\n\n
    \u8868\u6570\u636e\u91cf\u592a\u5927\u65f6\uff0c\u9664\u4e86\u5173\u6ce8\u8bbf\u95ee\u8be5\u8868\u7684\u54cd\u5e94\u65f6\u95f4\u5916\uff0c\u8fd8\u8981\u5173\u6ce8\u5bf9\u8be5\u8868\u7684\u7ef4\u62a4\u6210\u672c\uff08\u5982\u505a DDL \u8868\u66f4\u65f6\u95f4\u592a\u957f\uff0cdelete \u5386\u53f2\u6570\u636e\uff09\u3002<\/strong><\/h2>\n\n\n\n
    \u5bf9\u5927\u8868\u8fdb\u884c DDL \u64cd\u4f5c\u65f6\uff0c\u8981\u8003\u8651\u8868\u7684\u5b9e\u9645\u60c5\u51b5\uff08\u5982\u5bf9\u8be5\u8868\u7684\u5e76\u53d1\u8868\uff0c\u662f\u5426\u6709\u5916\u952e\uff09\u6765\u9009\u62e9\u5408\u9002\u7684 DDL \u53d8\u66f4\u65b9\u5f0f\u3002<\/p>\n\n\n\n
    \u5bf9\u5927\u6570\u636e\u91cf\u8868\u8fdb\u884c delete\uff0c\u7528\u5c0f\u6279\u91cf\u5220\u9664\u7684\u65b9\u5f0f\uff0c\u51cf\u5c11\u5bf9\u4e3b\u5b9e\u4f8b\u7684\u538b\u529b\u548c\u4e3b\u4ece\u5ef6\u8fdf\u3002<\/p>\n\n\n\n
    \u539f\u6587\uff1acnblogs.com\/YangJiaXin\/p\/10828244.html<\/p>\n","protected":false},"excerpt":{"rendered":"
    XX \u5b9e\u4f8b\uff08\u4e00\u4e3b\u4e00\u4ece\uff09xxx \u544a\u8b66\u4e2d\u6bcf\u5929\u51cc\u6668\u5728\u62a5 SLA \u62a5\u8b66\uff0c\u8be5\u62a5\u8b66\u7684\u610f\u601d\u662f\u5b58\u5728\u4e00\u5b9a\u7684\u4e3b\u4ece\u5ef6\u8fdf\u3002\uff08\u82e5\u5728\u6b64\u65f6\u53d1 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[115],"tags":[],"_links":{"self":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4018"}],"collection":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4018"}],"version-history":[{"count":1,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4018\/revisions"}],"predecessor-version":[{"id":4027,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4018\/revisions\/4027"}],"wp:attachment":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4018"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4018"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}