ruby - 在 JRuby 中使用 Solr 和 Sunspot 的低级错误

Question

我有一个在 JRuby 上运行的简单 DataMapper/Sinatra 应用程序作为搜索服务。我在搜索时收到零星的错误消息(找不到特定的韵律或原因)，想知道是否有其他人遇到过类似的问题。

这些错误是随机发生的，并且它们本身是不一致的。

例子:

INFO: IOError - closed stream:
 org/jruby/RubyIO.java:2616:in `sysread'
 /usr/lib/jruby/lib/ruby/1.8/net/protocol.rb:135:in `rbuf_fill'
 org/jruby/ext/Timeout.java:99:in `timeout'
 /usr/lib/jruby/lib/ruby/1.8/net/protocol.rb:134:in `rbuf_fill'
 /usr/lib/jruby/lib/ruby/1.8/net/protocol.rb:116:in `readuntil'
 /usr/lib/jruby/lib/ruby/1.8/net/protocol.rb:126:in `readline'
 /usr/lib/jruby/lib/ruby/1.8/net/http.rb:2026:in `read_status_line'
 /usr/lib/jruby/lib/ruby/1.8/net/http.rb:2015:in `read_new'
 /usr/lib/jruby/lib/ruby/1.8/net/http.rb:1051:in `request'
 /usr/lib/jruby/lib/ruby/1.8/net/http.rb:1037:in `request'
 /usr/lib/jruby/lib/ruby/1.8/net/http.rb:543:in `start'
 /usr/lib/jruby/lib/ruby/1.8/net/http.rb:1035:in `request'
 /usr/lib/jruby/lib/ruby/1.8/net/http.rb:772:in `get'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/rsolr-0.12.1/lib/rsolr/connection/net_http.rb:16:in `get'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/rsolr-0.12.1/lib/rsolr/connection/requestable.rb:36:in `request'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/rsolr-0.12.1/lib/rsolr/client.rb:34:in `request'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/sunspot-1.2.1/lib/sunspot/search/abstract_search.rb:35:in `execute'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/sunspot-1.2.1/lib/sunspot/session.rb:59:in `search'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/sunspot-1.2.1/lib/sunspot.rb:335:in `search'
 /var/www/search/application.rb:7:in `HEAD /search'

INFO: NoMethodError - undefined method `+' for nil:NilClass:
 /usr/lib/jruby/lib/ruby/1.8/net/protocol.rb:178:in `write0'
 /usr/lib/jruby/lib/ruby/1.8/net/protocol.rb:153:in `write'
 /usr/lib/jruby/lib/ruby/1.8/net/protocol.rb:168:in `writing'
 /usr/lib/jruby/lib/ruby/1.8/net/protocol.rb:152:in `write'
 /usr/lib/jruby/lib/ruby/1.8/net/http.rb:1580:in `write_header'
 /usr/lib/jruby/lib/ruby/1.8/net/http.rb:1535:in `exec'
 /usr/lib/jruby/lib/ruby/1.8/net/http.rb:1049:in `request'
 /usr/lib/jruby/lib/ruby/1.8/net/http.rb:772:in `get'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/rsolr-0.12.1/lib/rsolr/connection/net_http.rb:16:in `get'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/rsolr-0.12.1/lib/rsolr/connection/requestable.rb:36:in `request'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/rsolr-0.12.1/lib/rsolr/client.rb:34:in `request'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/sunspot-1.2.1/lib/sunspot/search/abstract_search.rb:35:in `execute'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/sunspot-1.2.1/lib/sunspot/session.rb:59:in `search'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/sunspot-1.2.1/lib/sunspot.rb:335:in `search'
 /var/www/search/application.rb:7:in `HEAD /search'

INFO: IOError - stream closed:
 org/jruby/RubyIO.java:1978:in `close'
 /usr/lib/jruby/lib/ruby/1.8/net/protocol.rb:70:in `close'
 /usr/lib/jruby/lib/ruby/1.8/net/http.rb:1059:in `request'
 /usr/lib/jruby/lib/ruby/1.8/net/http.rb:772:in `get'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/rsolr-0.12.1/lib/rsolr/connection/net_http.rb:16:in `get'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/rsolr-0.12.1/lib/rsolr/connection/requestable.rb:36:in `request'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/rsolr-0.12.1/lib/rsolr/client.rb:34:in `request'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/sunspot-1.2.1/lib/sunspot/search/abstract_search.rb:35:in `execute'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/sunspot-1.2.1/lib/sunspot/session.rb:59:in `search'
 /usr/lib/jruby-1.6.0/lib/ruby/gems/1.8/gems/sunspot-1.2.1/lib/sunspot.rb:335:in `search'
 /var/www/search/application.rb:7:in `HEAD /search'

这些错误似乎是 Sunspot(可能是 RSolr 或 JRuby？)下的某些东西的问题，但我有点不知所措，因为我找不到始终如一地重现该问题的方法。我已经尝试通过请求来解决 Solr 安装问题，看看它是否是 Solr/Tomcat 的问题，但我还没有发现 Solr/Tomcat 丢球。

Answer 1

问题出在线程上。默认情况下，Sunspot 的 session 对象不是线程安全的。在 Sunspot::Rails 中，它默认使用线程安全对象，但由于这是 Sinatra，您必须手动执行此操作，如下所示:

Sunspot.session = Sunspot::SessionProxy::ThreadLocalSessionProxy.new(Sunspot.config)