未找到Mongo Ruby驱动程序游标错误

Question

我使用ruby驱动程序从mongodb中找到文档，将它们收集到数组中并对其进行迭代，以更新与以下代码中相同的文档：

crawlarray = @@mongoclient[:crawlarray].find({searchresults:[]},:timeout => false).limit(500)
crawlarray.each do |elm|
    finalsearchstring = elm['searchstring'] 
    if elm["searchresults"].blank?
        ap "SEARCHING: #{finalsearchstring}"
        results = searchG(finalsearchstring) 
        elm["searchresults"] = results
        @@mongoclient[:crawlarray].update_one({"_id" => elm['_id']}, elm)
    else
        ap "ALREADY SEARCHED: #{finalsearchstring}"
    end
end

有90K条记录，但是正如您看到的，我得到500条记录才不会出错。每次经过约150次迭代后，我都会收到此错误；

D, [2016-08-02T22:32:08.853065 #10098] DEBUG -- : MONGODB | 127.0.0.1:27017 | posluga-dev.getMore | FAILED | Cursor not found, cursor id: 463388278686 (43) | 0.008009s
/Users/apple/.rvm/gems/ruby-2.2.1/gems/mongo-2.2.7/lib/mongo/operation/result.rb:256:in `validate!': Cursor not found, cursor id: 463388278686 (43) (Mongo::Error::OperationFailure)
    from /Users/apple/.rvm/gems/ruby-2.2.1/gems/mongo-2.2.7/lib/mongo/operation/executable.rb:36:in `block in execute'
    from /Users/apple/.rvm/gems/ruby-2.2.1/gems/mongo-2.2.7/lib/mongo/server/connection_pool.rb:107:in `with_connection'
    from /Users/apple/.rvm/gems/ruby-2.2.1/gems/mongo-2.2.7/lib/mongo/server/context.rb:63:in `with_connection'
    from /Users/apple/.rvm/gems/ruby-2.2.1/gems/mongo-2.2.7/lib/mongo/operation/executable.rb:34:in `execute'
    from /Users/apple/.rvm/gems/ruby-2.2.1/gems/mongo-2.2.7/lib/mongo/cursor.rb:163:in `block in get_more'
    from /Users/apple/.rvm/gems/ruby-2.2.1/gems/mongo-2.2.7/lib/mongo/retryable.rb:51:in `call'
    from /Users/apple/.rvm/gems/ruby-2.2.1/gems/mongo-2.2.7/lib/mongo/retryable.rb:51:in `read_with_retry'
    from /Users/apple/.rvm/gems/ruby-2.2.1/gems/mongo-2.2.7/lib/mongo/cursor.rb:162:in `get_more'
    from /Users/apple/.rvm/gems/ruby-2.2.1/gems/mongo-2.2.7/lib/mongo/cursor.rb:88:in `each'
    from /Users/apple/.rvm/gems/ruby-2.2.1/gems/mongo-2.2.7/lib/mongo/collection/view/iterable.rb:44:in `each'

有人可以帮我解决吗？

Answer 1

使用Mongo Ruby 驱动程序时，将“no_cursor_timeout”选项与查找查询一起使用。

这将禁用所有游标超时。默认情况下，MongoDB 会尝试杀死所有处于非活动状态超过 10 分钟的游标。有关更多信息，请查看此帖子。