太陽黑子：重新索引錯誤-getaddrinfo：提供的節點名或服務名，或者未知

Question

我正在使用一個具有MySQL數據庫和正在Solr中建立索引的模型的Rails 3.2應用程序。

這是正在發生的事情：

我正在運行以下命令：

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

在索引了400萬條記錄中的約12％（盡管每次索引的百分比不同）之后，該過程不可避免地炸毀了以下錯誤和堆棧跟蹤：

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>'

該應用程序在開發模式下位於localhost：3000上運行，而solr在localhost：8982上運行。 這是我的solr.rake文件：

Rake::Task['sunspot:reindex'].enhance ['sunspot:scope_models_for_index']
Rake::Task['sunspot:solr:reindex'].enhance ['sunspot:scope_models_for_index']

namespace 'sunspot' do
  task :scope_models_for_index => :environment do
    require 'rsolr/error'
    Dir.glob(Rails.root.join('app/models/**/*.rb')).each { |path| require path }

    # Add the GC
    commit_extension = Module.new do
      def commit
        GC.start
        super
      end
    end

    Sunspot.extend commit_extension

    # Set all the models default scopes the index scope
    Sunspot.searchable.each do |model|
      model.class_eval do
        default_scope ->{ sunspot_index } if model.respond_to?(:sunspot_index)
      end
    end
  end
end

有人知道什么可能導致此錯誤，或如何解決該錯誤？

Answer 1

顯然，該問題是由於以下異常引起的：SocketError。

該異常發生在文件/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

這不是最漂亮的解決方案，顯然也不是生產代碼的解決方案，但是我能夠通過為SocketError異常添加搶救處理程序來暫時解決此問題，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，看來我的Solr本地副本遇到內存不足的問題。 我通過相應地更新sunspot.yml文件解決了內存問題：

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