多个 Solr 实例 - 第二个 Solr 在启动时锁定

Question

我一直试图找出一个工作流程，即使开发实例正在运行，我的 Minitest 套件也会启动第二个 Solr 实例进行功能测试。但是，我在启动服务器时遇到了问题（即当我在测试之外启动它们时）。

要启动我正在使用的服务器：

RAILS_ENV=development bin/rake sunspot:solr:start
RAILS_ENV=test bin/rake sunspot:solr:start

但是，无论哪个服务器第二次启动都会被锁定。任何在测试中或仅在开发中访问服务器的尝试都会产生此错误：

RSolr::Error::Http - 500 Internal Server Error
Error:     {msg=SolrCore 'test& 'is not available due to init failure: Index locked for write for core 'test'. Solr now longer supports forceful unlocking via 'unlockOnStartup'. Please verify locks manually!,trace=org.apache.solr.common.SolrException: SolrCore 'test' is not available due to init failure: Index locked for write for core 'test'. Solr now longer supports forceful unlocking via 'unlockOnStartup'. Please verify locks manually!
    at org.apache.solr.core.CoreContainer.getCore(CoreContainer.java:974)
    at org.apache.solr.servlet.HttpSolrCall.init(HttpSolrCall.java:250)
    at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:417)
    at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:214)
    at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:179)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)

URI: http://localhost:8981/solr/test/update?wt=ruby
Request Headers: {"Content-Type"=>"text/xml"}
Request Data: "<?xml version=\"1.0\" encoding=\"UTF-8\"?><add/>"

我四处寻找与锁定相关的问题，但找不到任何问题出在两台服务器运行的地方。我的设置是：

Rails (5.0.0.1)
sunspot (2.2.5)
sunspot_rails (2.2.5)
sunspot_solr (2.2.5)
ruby 2.3.1p112

我的sunspot.yml是：

production:
  solr:
    hostname: localhost
    port: 8983
    log_level: WARNING
    path: /solr/production

development:
  solr:
    hostname: localhost
    port: 8982
    log_level: INFO
    path: /solr/development

test:
  solr:
    hostname: localhost
    port: 8981
    log_level: WARNING
    path: /solr/test

最后， solr.xml

<solr>

  <solrcloud>

    <str name="host">${host:}</str>
    <int name="hostPort">${jetty.port:8983}</int>
    <str name="hostContext">${hostContext:solr}</str>

    <bool name="genericCoreNodeNames">${genericCoreNodeNames:true}</bool>

    <int name="zkClientTimeout">${zkClientTimeout:30000}</int>
    <int name="distribUpdateSoTimeout">${distribUpdateSoTimeout:600000}</int>
    <int name="distribUpdateConnTimeout">${distribUpdateConnTimeout:60000}</int>

  </solrcloud>

  <shardHandlerFactory name="shardHandlerFactory" class="HttpShardHandlerFactory">
    <int name="socketTimeout">${socketTimeout:600000}</int>
    <int name="connTimeout">${connTimeout:60000}</int>
  </shardHandlerFactory>

</solr>

非常感谢您！