nutch 与 solr3.6.* 集成时出现了这个错误。找了很久，终于发现这里 说Deprecate defaultSearchField，你需要修改SOLR_HOME/example/solr/conf/solrconfig.xml,将里面的<str name="df">text</str>都替换为<str name="df">content</str>（你可以在vim下使用
:%s/old/new/g 全文替换指定字符）；接着，将从nutch下拷贝到solr/conf/下的schema.xml中的 <schema name="nutch" version="1.5.*">修改成<schema name="nutch" version="1.5">
SEVERE: org.apache.solr.common.SolrException: undefined field text
at org.apache.solr.schema.IndexSchema.getDynamicFieldType(IndexSchema.java:1330)
at org.apache.solr.schema.IndexSchema$SolrQueryAnalyzer.getAnalyzer(IndexSchema.java:408)
at org.apache.solr.schema.IndexSchema$SolrIndexAnalyzer.reusableTokenStream(IndexSchema.java:383)
at org.apache.lucene.queryParser.QueryParser.getFieldQuery(QueryParser.java:574)
at org.apache.solr.search.SolrQueryParser.getFieldQuery(SolrQueryParser.java:206)
at org.apache.lucene.queryParser.QueryParser.Term(QueryParser.java:1429)
at org.apache.lucene.queryParser.QueryParser.Clause(QueryParser.java:1317)
at org.apache.lucene.queryParser.QueryParser.Query(QueryParser.java:1245)
at org.apache.lucene.queryParser.QueryParser.TopLevelQuery(QueryParser.java:1234)
at org.apache.lucene.queryParser.QueryParser.parse(QueryParser.java:206)
at org.apache.solr.search.LuceneQParser.parse(LuceneQParserPlugin.java:79)
at org.apache.solr.search.QParser.getQuery(QParser.java:143)
at org.apache.solr.handler.component.QueryComponent.prepare(QueryComponent.java:105)
at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:165)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:1376)
at org.apache.solr.core.QuerySenderListener.newSearcher(QuerySenderListener.java:59)
at org.apache.solr.core.SolrCore$3.call(SolrCore.java:1182)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)
如果没有按上面说的，而只修改了第一步，就会出现下面异常。
Aug 18, 2012 3:15:05 AM org.apache.solr.common.SolrException log
SEVERE: org.apache.solr.common.SolrException: Schema Parsing Failed: multiple points
at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:688)
at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:123)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:478)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:332)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:216)
at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:161)
at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:96)
at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:713)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1282)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:499)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:224)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.mortbay.start.Main.invokeMain(Main.java:194)
at org.mortbay.start.Main.start(Main.java:534)
at org.mortbay.start.Main.start(Main.java:441)
at org.mortbay.start.Main.main(Main.java:119)
Caused by: java.lang.NumberFormatException: multiple points
at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1101)
at java.lang.Float.parseFloat(Float.java:452)
at org.apache.solr.core.Config.getFloat(Config.java:307)
at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:430)
... 31 more