Ruby on rails sunspot:reindex错误-getaddrinfo:nodename或servname已提供，或未知

我正在使用一个Rails3.2应用程序，该应用程序有一个mysql数据库和许多正在Solr中索引的模型

发生的事情如下：

我正在运行以下命令：

RAILS_ENV=development bundle exec rake sunspot:reindex[1000] --trace

在对400万条记录中的12%进行了索引（尽管每次都是不同的百分比）之后，该过程不可避免地会出现以下错误和堆栈跟踪：

rake aborted!
getaddrinfo: nodename nor servname provided, or not known
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/net/http.rb:762:in `initialize'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/net/http.rb:762:in `open'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/net/http.rb:762:in `block in connect'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/timeout.rb:54:in `timeout'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/timeout.rb:99:in `timeout'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/net/http.rb:762:in `connect'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/net/http.rb:755:in `do_start'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/net/http.rb:744:in `start'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/net/http.rb:1284:in `request'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rsolr-1.0.9/lib/rsolr/connection.rb:15:in `execute'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot_rails-2.0.0/lib/sunspot/rails/solr_instrumentation.rb:14:in `block in execute_with_as_instrumentation'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/notifications.rb:123:in `block in instrument'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/notifications.rb:123:in `instrument'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot_rails-2.0.0/lib/sunspot/rails/solr_instrumentation.rb:12:in `execute_with_as_instrumentation'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rsolr-1.0.9/lib/rsolr/client.rb:167:in `execute'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rsolr-1.0.9/lib/rsolr/client.rb:161:in `send_and_receive'
(eval):2:in `post'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rsolr-1.0.9/lib/rsolr/client.rb:67:in `update'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rsolr-1.0.9/lib/rsolr/client.rb:87:in `add'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot-2.0.0/lib/sunspot/indexer.rb:106:in `add_documents'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot-2.0.0/lib/sunspot/indexer.rb:30:in `add'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot-2.0.0/lib/sunspot/session.rb:91:in `index'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot-2.0.0/lib/sunspot/session_proxy/abstract_session_proxy.rb:11:in `index'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot-2.0.0/lib/sunspot/session_proxy/retry_5xx_session_proxy.rb:17:in `method_missing'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot-2.0.0/lib/sunspot/session_proxy/abstract_session_proxy.rb:11:in `index'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot-2.0.0/lib/sunspot.rb:184:in `index'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot_rails-2.0.0/lib/sunspot/rails/searchable.rb:261:in `block (2 levels) in solr_index'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot_rails-2.0.0/lib/sunspot/rails/searchable.rb:365:in `solr_benchmark'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot_rails-2.0.0/lib/sunspot/rails/searchable.rb:260:in `block in solr_index'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/relation/batches.rb:72:in `find_in_batches'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/querying.rb:8:in `find_in_batches'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot_rails-2.0.0/lib/sunspot/rails/searchable.rb:259:in `solr_index'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot_rails-2.0.0/lib/sunspot/rails/searchable.rb:203:in `solr_reindex'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot_rails-2.0.0/lib/sunspot/rails/tasks.rb:64:in `block (3 levels) in <top (required)>'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot-2.0.0/lib/sunspot/class_set.rb:16:in `each'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot-2.0.0/lib/sunspot/class_set.rb:16:in `each'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/sunspot_rails-2.0.0/lib/sunspot/rails/tasks.rb:63:in `block (2 levels) in <top (required)>'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/task.rb:246:in `call'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/task.rb:246:in `block in execute'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/task.rb:241:in `each'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/task.rb:241:in `execute'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/task.rb:184:in `block in invoke_with_call_chain'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/task.rb:177:in `invoke_with_call_chain'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/task.rb:170:in `invoke'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:143:in `invoke_task'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:101:in `block (2 levels) in top_level'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:101:in `each'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:101:in `block in top_level'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:110:in `run_with_threads'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:95:in `top_level'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:73:in `block in run'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:160:in `standard_exception_handling'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:70:in `run'
/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rake-10.0.4/bin/rake:33:in `<top (required)>'
/Users/tchapin/.rbenv/versions/1.9.3-p392/bin/rake:23:in `load'
/Users/tchapin/.rbenv/versions/1.9.3-p392/bin/rake:23:in `<main>'

---

有人知道是什么导致了这个错误，或者如何修复它吗？

显然，这个问题是由一个异常引起的：SocketError

异常发生在文件/Users/tchapin/.rbenv/versions/1.9.3-p392/lib/ruby/gems/1.9.1/gems/rsolr-1.0.9/lib/rsolr/connection.rb中：

  def execute client, request_context
    h = http request_context[:uri], request_context[:proxy], request_context[:read_timeout], request_context[:open_timeout]
    request = setup_raw_request request_context
    request.body = request_context[:data] if request_context[:method] == :post and request_context[:data]
    begin
      response = h.request request
      charset = response.type_params["charset"]
      {:status => response.code.to_i, :headers => response.to_hash, :body => force_charset(response.body, charset)}
    rescue Errno::ECONNREFUSED => e
      raise(Errno::ECONNREFUSED.new(request_context.inspect))
    # catch the undefined closed? exception -- this is a confirmed ruby bug
    rescue NoMethodError
      $!.message == "undefined method `closed?' for nil:NilClass" ?
        raise(Errno::ECONNREFUSED.new) :
        raise($!)
    end
  end

这不是最漂亮的修复，显然也不是生产代码的解决方案，但我通过为SocketError异常添加一个救援处理程序，暂时解决了这个问题，如下所示：

  def execute client, request_context
    h = http request_context[:uri], request_context[:proxy], request_context[:read_timeout], request_context[:open_timeout]
    request = setup_raw_request request_context
    request.body = request_context[:data] if request_context[:method] == :post and request_context[:data]
    retries = 10
    begin
      response = h.request request
      charset = response.type_params["charset"]
      {:status => response.code.to_i, :headers => response.to_hash, :body => force_charset(response.body, charset)}
    rescue Errno::ECONNREFUSED => e
      raise(Errno::ECONNREFUSED.new(request_context.inspect))
    # catch the undefined closed? exception -- this is a confirmed ruby bug
    rescue NoMethodError
      $!.message == "undefined method `closed?' for nil:NilClass" ?
        raise(Errno::ECONNREFUSED.new) :
        raise($!)
    rescue SocketError => e
      puts e
      if retries > 0
        puts "SocketError! Retrying connection after 1 second..."
        retries -= 1
        sleep(1)
        retry
      else
        puts "SocketError: Not responding after 10 retries! Giving up!")
        exit
      end
    end
  end

此外，我的Solr本地副本似乎存在内存不足的问题。我通过相应地更新sunspot.yml文件解决了内存问题：

development:
  solr:
    hostname: 127.0.0.1
    port: 8982
    min_memory: 512M
    max_memory: 2G
    log_level: INFO
    # open_timeout: 3
    # read_timeout: 3

---

哇，令人印象深刻的发现。我的rsolr正在另一个线程上引发Errno:：econnrefluse，请求失败。我甚至无法从我的控制器捕获它，因为它是在不同的线程上引发的。我认为应用程序应该更具弹性，而不是仅仅因为Solr关闭就向用户提出异常。您知道如何从另一个线程上启动的模型回调中捕获该异常吗？

development:
  solr:
    hostname: 127.0.0.1
    port: 8982
    min_memory: 512M
    max_memory: 2G
    log_level: INFO
    # open_timeout: 3
    # read_timeout: 3