我有用于将url与我们的数据库网址进行比较并仅保存新网址的php脚本。问题是这个脚本的每一步都需要很长时间(总共超过10分钟)。以下是步骤:
$query = sprintf("DELETE FROM %s ; ", $DB ['compare_result_table']);
$query = sprintf("LOAD DATA INFILE '%s' IGNORE INTO TABLE %s
FIELDS TERMINATED BY ','
ENCLOSED BY \"'\"
LINES TERMINATED BY '\n'
(domain, url_value)",
$real_out_path, $DB["compare_result_table"]);
$query = sprintf(" INSERT INTO %s SELECT domain
FROM %s ;", $DB ['compare_url_table'], 'domain_data' );
$query = sprintf("DELETE a.*
FROM %s a INNER JOIN %s b using (domain);",
$DB["compare_result_table"], $DB ['compare_url_table']);
这里是表格描述:
DROP TABLE IF EXISTS cmp_url;
CREATE TABLE cmp_url
(
domain varchar(255),
index (domain)
);
DROP TABLE IF EXISTS cmp_result;
CREATE TABLE cmp_result
(
domain varchar(255),
url_value varchar(4096),
index (domain)
);
每次我调用show PROCESSLIST时,我都会看到每一步(不包括文件中的数据加载)都需要很长时间。 domain_data表包含我们要比较的域,现在是600 000条记录。它越大,所有步骤就越慢。
这是我在my.cnf中更改的一些选项:
innodb_lock_wait_timeout = 360
innodb_autoinc_lock_mode=2
binlog_format=mixed
transaction-isolation = READ-COMMITTED
但它不会改变任何事情。我该如何解决这个问题?谢谢你的时间。
答案 0 :(得分:0)
完全替换表:
Cannot complete the install because one or more required items could not be found.
Software being installed: IBM Dojo Mobile Tools 7.1.0.00-20160726-1659 (com.ibm.imp.dojo.tools.licensed.feature.feature.group 7.1.0.00-20160726-1659)
Missing requirement: Model Plug-in 8.0.0.v20160726_1542 (com.ibm.etools.webtools.model 8.0.0.v20160726_1542) requires 'bundle org.eclipse.gmf.runtime.emf.type.core [1.0.0,2.0.0)' but it could not be found
Cannot satisfy dependency:
From: Rich Page Editor - Dojo extensions 1.1.500.v20160726_1542 (com.ibm.etools.rpe.dojo 1.1.500.v20160726_1542)
To: bundle com.ibm.etools.webtools.model [8.0.0,9.0.0)
Cannot satisfy dependency:
From: Dojo Web Tools 2.1.200.v20160726_1542 (com.ibm.etools.webtools.dojo.feature.feature.group 2.1.200.v20160726_1542)
To: com.ibm.etools.rpe.dojo [1.1.500.v20160726_1542]
Cannot satisfy dependency:
From: IBM Dojo Mobile Tools 7.1.0.00-20160726-1659 (com.ibm.imp.dojo.tools.licensed.feature.feature.group 7.1.0.00-20160726-1659)
To: com.ibm.etools.webtools.dojo.feature.feature.group 1.0.0
快速。零停机时间。