php-reque: worker 失败 "MySQL server has gone away"

Question

我开始使用 php-resque (https://github.com/chrisboulton/php-resque) 以及 php 和 mysql 服务器。我看到工人 "MySQL server has gone away" 错误。

作业排队代码：

if ($request->command == 'custom_script') {       
  //error_log("before queue");
  Resque::enqueue($queue, 'AsyncTest', array('text'=>'yolo'));
  //error_log("after queue");
}

工作class：

class AsyncTest{
public function setUp() {
   # Set up something before perform, like establishing a database connection
    $mysql = Mysql::getInstance();
    EH::setErrorHandler();
}

public function perform()
{
//      $mysql = Mysql::getInstance();
    // EH::setErrorHandler();
    //error_log($this->args['text']);
    $haiku_step_query= $mysql->query("SELECT id FROM haiku LIMIT 10 OFFSET 1");
    $row = $mysql->fetch_assoc($haiku_step_query);
    $haiku_id = $row['id'];
}
public function tearDown() {
   # Run after perform, like closing resources
}
}

我看到 "MySQL server has gone away" 条错误消息：

 MySQL ERROR №2006 MySQL server has gone away[qs:SELECT id FROM haiku LIMIT 10 OFFSET 1] 

(/var/www/html/haiku_server/vendor/chrisboulton/php-resque/resque.php   line 77
Resque_Worker->work(5) >> /var/www/html/haiku_server/vendor/chrisboulton/php-resque/lib/Resque/Worker.php   line 199  
Resque_Worker->perform(Object) >> /var/www/html/haiku_server/vendor/chrisboulton/php-resque/lib/Resque/Worker.php   line 237
Resque_Job->perform() >> /var/www/html/haiku_server/vendor/chrisboulton/php-resque/lib/Resque/Job.php   line 182
AsyncTest->perform() >> /var/www/html/haiku_server/includes/bgJobs/AsyncThreads.php   line 48          
Mysql->query("SELECT id FROM haiku LIMIT 10 OFFSET 1") >> /var/www/html/haiku_server/includes/Mysql.class.php   line 113   )

请注意，这不会发生，即 mysql 工作正常，当我执行没有 php-resque 的操作时，例如：

if ($request->command == 'custom_script') {
    $mysql = Mysql::getInstance();
    EH::setErrorHandler();
    $haiku_step_query= $mysql->query("SELECT id FROM haiku LIMIT 10 OFFSET 1");
    $row = $mysql->fetch_assoc($haiku_step_query);
    $haiku_id = $row['id'];

}

Answer 1

看看这个问题： https://github.com/chrisboulton/php-resque/issues/269

一个可能的原因是因为在作业第一次运行后，您的对象将保持加载在内存中，包括您的 MySQL 连接。解决方案是在执行方法中重新连接到 MySQL。

php-reque: worker 失败 "MySQL server has gone away"

php-reque: worker fails with "MySQL server has gone away"

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