PHP + MongoDB:未捕获的异常'MongoCursorException',消息'没有这样的文件或目录'

Question

我正在研究一个尝试从PHP连接到MongoDB数据库的Web应用程序.在90%的页面加载中一切正常,但在其他10%中,当我尝试更新集合时会抛出以下异常:

Fatal error: Uncaught exception 'MongoCursorException' with message 'No such file or directory' in D:\webDev\webSites\str\dev3\_global_classes\User.php:40
Stack trace:
#0 D:\webDev\webSites\str\dev3\_global_classes\User.php(40):
   MongoCollection->update(Array, Array, Array)
#1 D:\webDev\webSites\str\dev3\_init\_init.php(8):
   User->__construct(NULL)
#2 D:\webDev\webSites\str\dev3\index.php(3):
   include('D:\webDev\webSi...')
#3 {main} thrown in D:\webDev\webSites\str\dev3\_global_classes\User.php on line 40

PHP代码:

public function __construct($SESSIONID = null) {        
    User::$_users_collection = Main::$_mongo->selectCollection("users");

     ...   

    $query = array('session_id' => session_id());

    $expiry = time() + Main::$_lifetime;
    $data = array(
        'session_id' => session_id(),
        'expiry' => (string)$expiry,
        'ip' => $_SERVER['REMOTE_ADDR']
    );

    $options = array(
        'upsert' => true,
        'safe' => true
    );

    try {
        User::$_users_collection->update($query, array('$set' => $data), $options);
    } catch (Exception $e) {
        throw $e;
    }

    ...
}

Mongo版本:

Wed Oct 17 10:53:48 /usr/bin/mongos db version v2.0.7, pdfile version 4.5 starting (--help for usage)
Wed Oct 17 10:53:48 git version: 875033920e8869d284f32119413543fa475227bf
Wed Oct 17 10:53:48 build info: Linux ip-10-2-29-40 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_41

我的mongo集群只有一个分片,我的p​​hp版本是:5.4.4,我的mongo驱动程序版本是:1.2.12.

Answer 1

很难知道它发生在哪里，但是此页面 详细解释了导致此异常的原因