Question

我正在尝试设置Solandra（Solr + Cassandra），并使用SolrJ库来使用它。我设法使用SolrJ设置所有内容并添加一些文档，但是当我尝试进行查询时，它失败了。我试图通过url执行查询但它也失败了。我用过：

http://localhost:8983/solandra/my_core/select?q=*:*&wt=xml

在我的应用中，我使用了以下代码：

CommonsHttpSolrServer server = new CommonsHttpSolrServer(url);
server.setParser(new XMLResponseParser());
SolrQuery query = new SolrQuery();
query.setQuery("some"); 
query.setStart(0);
query.setRows(10); 
QueryResponse response = server.query(query);

这是我得到的堆栈跟踪：

org.apache.solr.common.SolrException：java.lang.StackOverflowError at at org.apache.solr.handler.component.SearchHandler.handleRequestBody（SearchHandler.java:281）在 org.apache.solr.handler.RequestHandlerBase.handleRequest（RequestHandlerBase.java:129）在org.apache.solr.core.SolrCore.execute（SolrCore.java:1368）at at org.apache.solr.servlet.SolrDispatchFilter.execute（SolrDispatchFilter.java:356）在 solandra.SolandraDispatchFilter.execute（SolandraDispatchFilter.java:171）在 org.apache.solr.servlet.SolrDispatchFilter.doFilter（SolrDispatchFilter.java:252）在 solandra.SolandraDispatchFilter.doFilter（SolandraDispatchFilter.java:137）在 org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1212）在 org.mortbay.jetty.servlet.ServletHandler.handle（ServletHandler.java:399）在 org.mortbay.jetty.servlet.SessionHandler.handle（SessionHandler.java:182）在 org.mortbay.jetty.handler.ContextHandler.handle（ContextHandler.java:766）在 org.mortbay.jetty.handler.HandlerWrapper.handle（HandlerWrapper.java:152）在org.mortbay.jetty.Server.handle（Server.java:326）处 org.mortbay.jetty.HttpConnection.handleRequest（HttpConnection.java:542）在 org.mortbay.jetty.HttpConnection $ RequestHandler.headerComplete（HttpConnection.java:928）在org.mortbay.jetty.HttpParser.parseNext（HttpParser.java:549）at org.mortbay.jetty.HttpParser.parseAvailable（HttpParser.java:212）at at org.mortbay.jetty.HttpConnection.handle（HttpConnection.java:404）at at org.mortbay.jetty.bio.SocketConnector $ Connection.run（SocketConnector.java:228）在 org.mortbay.thread.QueuedThreadPool $ PoolThread.run（QueuedThreadPool.java:582）引起：java.lang.StackOverflowError at java.net.SocketInputStream.socketRead0（Native Method）at java.net.SocketInputStream.read（SocketInputStream.java:150）at java.net.SocketInputStream.read（SocketInputStream.java:121）at java.io.BufferedInputStream.fill（BufferedInputStream.java:235）at java.io.BufferedInputStream.read（BufferedInputStream.java:254）at org.apache.commons.httpclient.HttpConnection.isStale（HttpConnection.java:506）在 org.apache.commons.httpclient.HttpConnection.closeIfStale（HttpConnection.java:431）在 org.apache.commons.httpclient.MultiThreadedHttpConnectionManager $ HttpConnectionAdapter.closeIfStale（MultiThreadedHttpConnectionManager.java:1313）在 org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry（HttpMethodDirector.java:382）在 org.apache.commons.httpclient.HttpMethodDirector.executeMethod（HttpMethodDirector.java:171）在 org.apache.commons.httpclient.HttpClient.executeMethod（HttpClient.java:397）在 org.apache.commons.httpclient.HttpClient.executeMethod（HttpClient.java:323）在 org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request（CommonsHttpSolrServer.java:422）在 org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request（CommonsHttpSolrServer.java:244）在 org.apache.solr.handler.component.HttpCommComponent $ 1.call（SearchHandler.java:421）在 org.apache.solr.handler.component.HttpCommComponent $ 1.call（SearchHandler.java:393） at java.util.concurrent.FutureTask $ Sync.innerRun（FutureTask.java:334）在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）在java.util.concurrent.FutureTask.run（FutureTask.java:166）at java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1145）在 java.util.concurrent.ThreadPoolExecutor中的$ Worker.run（ThreadPoolExecutor.java:615）在java.lang.Thread.run（Thread.java:722）

可能是因为我错过了schema.xml中的内容吗？这就是它的样子：

<schema name="my_core" version="1.1">
 <types>
  <fieldType name="string" class="solr.StrField"/>
  <fieldType name="text_general_rev" class="solr.TextField" positionIncrementGap="100">
    <analyzer type="index">
        <tokenizer class="solr.StandardTokenizerFactory"/>
        <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" />
        <filter class="solr.LowerCaseFilterFactory"/>
        <filter class="solr.ReversedWildcardFilterFactory" withOriginal="true" maxPosAsterisk="3" maxPosQuestion="2" maxFractionAsterisk="0.33"/>
    </analyzer>
    <analyzer type="query">
        <tokenizer class="solr.StandardTokenizerFactory"/>
        <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true"/>
        <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" />
        <filter class="solr.LowerCaseFilterFactory"/>
    </analyzer>
  </fieldType>
</types>
 <fields>
    <field name="url"   type="string" indexed="true" stored="true"/>
    <field name="content"  type="text_general_rev" indexed="true"  stored="true"/>
    <field name="media"  type="string" indexed="true"  stored="true"/>
    <field name="country"  type="string" indexed="true"  stored="true"/>
    <field name="date"  type="string" indexed="true"  stored="true"/>
 </fields>

<defaultSearchField>content</defaultSearchField>
<uniqueKey>url</uniqueKey>

</schema>

Answer 1

我解决了。我在solandra.in.env文件中增加了堆栈大小。所以如果有人遇到同样的问题，我会设置-Xss512k参数。

无法对Solr进行任何查询

1 个答案: