Solr RequestHandler 初始化失败 [英] Solr RequestHandler init failure
问题描述
我似乎在启动和运行 solr 时遇到问题，我按照此处的指南进行操作
I seem to be having problems getting solr up and running, I followed the guide here
http://andres.jaimes.net/878/setup-lucene-solr-centos-tomcat/
一切顺利，但现在我正在尝试从 mysql 导入数据.为此，我一直在遵循本指南
All went well, but now I'm trying to import data from mysql. To do this I have been following this guide
http://www.wheelsandcogs.co.uk/2011/01/13/solr-tomcat-mysql-ubuntu/
将其添加到 solrconfig.xml 时出现错误
The error comes when I add this to my solrconfig.xml
<requestHandler name="/dataimport" class="org.apache.solr.handler.dataimport.DataImportHandler">
<lst name="defaults">
<str name="config">data-config.xml</str>
</lst>
</requestHandler>
这是我得到的错误.如果我删除它，solr 运行良好，但当然我不能从 mysql 导入.
This is the error I get. If I remove this, solr runs fine but of course I cannot import from mysql.
HTTP Status 500 - {msg=SolrCore 'collection1' is not available due to init failure:
RequestHandler init failure,trace=org.apache.solr.common.SolrException: SolrCore
'collection1' is not available due to init failure: RequestHandler init failure at
org.apache.solr.core.CoreContainer.getCore(CoreContainer.java:1212) at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:248) at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:155) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.jav
a:235) at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857) at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java
:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at
java.lang.Thread.run(Thread.java:724) Caused by: org.apache.solr.common.SolrException:
RequestHandler init failure at org.apache.solr.core.SolrCore.<init>(SolrCore.java:821) at
org.apache.solr.core.SolrCore.<init>(SolrCore.java:618) at
org.apache.solr.core.CoreContainer.createFromLocal(CoreContainer.java:949) at
org.apache.solr.core.CoreContainer.create(CoreContainer.java:984) at
org.apache.solr.core.CoreContainer$2.call(CoreContainer.java:597) at
org.apache.solr.core.CoreContainer$2.call(CoreContainer.java:592) at
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at
java.util.concurrent.FutureTask.run(FutureTask.java:166) at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at
java.util.concurrent.FutureTask.run(FutureTask.java:166) at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) ... 1 more
Caused by: org.apache.solr.common.SolrException: RequestHandler init failure at
org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:168) at
org.apache.solr.core.SolrCore.<init>(SolrCore.java:758) ... 13 more Caused by:
org.apache.solr.common.SolrException: Error loading class
'org.apache.solr.handler.dataimport.DataImportHandler' at
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:464) at
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:396) at
org.apache.solr.core.SolrCore.createInstance(SolrCore.java:518) at
org.apache.solr.core.SolrCore.createRequestHandler(SolrCore.java:592) at
org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:154) ...
14 more Caused by: java.lang.ClassNotFoundException:
org.apache.solr.handler.dataimport.DataImportHandler at
java.net.URLClassLoader$1.run(URLClassLoader.java:366) at
java.net.URLClassLoader$1.run(URLClassLoader.java:355) at
java.security.AccessController.doPrivileged(Native Method) at
java.net.URLClassLoader.findClass(URLClassLoader.java:354) at
java.lang.ClassLoader.loadClass(ClassLoader.java:424) at
java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:789) at
java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native
Method) at java.lang.Class.forName(Class.java:270) at
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:448) ... 18 more
,code=500}
我正在运行 Centos，因此使用第一个指南来启动和运行 solr.第二个指南是针对 Ubuntu 的，在安装 JDBC 的开头有一个步骤，我不确定我是否做对了..我想知道这是否可能是问题的一部分.
I am running Centos, hence using the first guide to get solr up and running. The 2nd guide is for Ubuntu, there is a step near the beginning about installing the JDBC, I am not sure if I did it right.. I'm wondering if this may be part of the problem.
推荐答案
结果证明我犯了一个愚蠢的错误.
It turns out I made a stupid mistake.
上面的教程http://andres.jaimes.net/878/setup-lucene-solr-centos-tomcat/
指示我们复制
example/solr/
到
/home/solr
除此之外，solr 提供的这个特定示例不包含处理数据导入所需的文件.
Except, this particular example provided by solr does not contain the necessary files to handle dataimports.
要解决此问题:
1) 在您的 solr 实例 (/home/solr/lib) 中创建一个lib"文件夹
1) Create a 'lib' folder in your solr instance (/home/solr/lib)
2) 从您下载 solr 的文件夹中，复制 /dist/solr-dataimporthandler-x.x.x.jar 和 solr-dataimporthandler-extras-x.x.x.jar.将两者粘贴到您新创建的 lib 文件夹中.
2) From the folder where you downloaded solr to, copy /dist/solr-dataimporthandler-x.x.x.jar and solr-dataimporthandler-extras-x.x.x.jar. Paste both into your newly created lib folder.
如果你还没有，还要确保你在这个文件夹中有 mysql-connector-java.jar.
Also ensure you have mysql-connector-java.jar in this folder if you haven't already.
3) 重启服务器.
这篇关于Solr RequestHandler 初始化失败的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
