Question

我已使用couchrest设置了couchdb数据库，以便与ruby on rails应用程序一起使用。

现在数据库有大约100K的记录，我想添加一个字段来存储整数格式的时间戳尝试在循环中更新它会导致请求超时。

将新字段/属性添加到couchdb的最佳方法是什么？

代码

pages = Page.all
pages.each do |p|
  p.update_attributes(:created_at_to_i => p.created_at.to_i)
  puts p.created_at_to_i.inspect
end

跟踪

>> Page.update_timestamp
RestClient::RequestTimeout: Request Timeout
    from /usr/local/lib/ruby/gems/1.8/gems/rest-client-1.6.7/lib/restclient/request.rb:184:in `transmit'
    from /usr/local/lib/ruby/gems/1.8/gems/rest-client-1.6.7/lib/restclient/request.rb:64:in `execute'
    from /usr/local/lib/ruby/gems/1.8/gems/rest-client-1.6.7/lib/restclient/request.rb:33:in `execute'
    from /usr/local/lib/ruby/gems/1.8/gems/couchrest-1.1.2/lib/couchrest/rest_api.rb:89:in `execute'
    from /usr/local/lib/ruby/gems/1.8/gems/couchrest-1.1.2/lib/couchrest/rest_api.rb:45:in `get'
    from /usr/local/lib/ruby/gems/1.8/gems/couchrest-1.1.2/lib/couchrest/database.rb:260:in `view'
    from /usr/local/lib/ruby/gems/1.8/gems/couchrest-1.1.2/lib/couchrest/design.rb:52:in `view_on'
    from /usr/local/lib/ruby/gems/1.8/gems/couchrest_model-1.1.2/lib/couchrest/model/views.rb:142:in `fetch_view'
    from /usr/local/lib/ruby/gems/1.8/gems/couchrest_model-1.1.2/lib/couchrest/model/views.rb:135:in `fetch_view_with_docs'
    from /usr/local/lib/ruby/gems/1.8/gems/couchrest_model-1.1.2/lib/couchrest/model/views.rb:104:in `view'
    from /usr/local/lib/ruby/gems/1.8/gems/couchrest_model-1.1.2/lib/couchrest/model/document_queries.rb:12:in `all'
    from /var/www/monitoring_couch/app/models/page.rb:309:in `update_timestamp'
    from (irb):2

Answer 1

要添加新属性，您需要加载每个文档，修改它并将其保存回数据库。你可以使用bulk update api来做到这一点，但对于只有10万，我认为这不值得额外的麻烦。

请发布您的更新脚本以及发生超时时获得的回溯。

将属性添加到couchdb

1 个答案: