Open Too Many Files

[Bing Li]

Dear all,

I got an exception when querying the index within Solr. It told me that too
many files are opened. How to handle this problem?

Thanks so much!
LB

[java] org.apache.solr.client.solrj.
SolrServerException: java.net.SocketException: Too many open files
     [java]     at
org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:483)
     [java]     at
org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:244)
     [java]     at
org.apache.solr.client.solrj.request.QueryRequest.process(QueryRequest.java:89)
     [java]     at
org.apache.solr.client.solrj.SolrServer.query(SolrServer.java:118)
     [java]     at com.greatfree.Solr.Broker.Search(Broker.java:145)
     [java]     at
com.greatfree.Solr.SolrIndex.SelectHubPageHashByHubKey(SolrIndex.java:116)
     [java]     at com.greatfree.Web.HubCrawler.Crawl(Unknown Source)
     [java]     at com.greatfree.Web.Worker.run(Unknown Source)
     [java]     at java.lang.Thread.run(Thread.java:662)
     [java] Caused by: java.net.SocketException: Too many open files
     [java]     at java.net.Socket.createImpl(Socket.java:397)
     [java]     at java.net.Socket.<init>(Socket.java:371)
     [java]     at java.net.Socket.<init>(Socket.java:249)
     [java]     at
org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:80)
     [java]     at
org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:122)
     [java]     at
org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707)
     [java]     at
org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1361)
     [java]     at
org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387)
     [java]     at
org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
     [java]     at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
     [java]     at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)
     [java]     at
org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:427)
     [java]     ... 8 more
     [java] Exception in thread "Thread-96" java.lang.NullPointerException
     [java]     at
com.greatfree.Solr.SolrIndex.SelectHubPageHashByHubKey(SolrIndex.java:117)
     [java]     at com.greatfree.Web.HubCrawler.Crawl(Unknown Source)
     [java]     at com.greatfree.Web.Worker.run(Unknown Source)
     [java]     at java.lang.Thread.run(Thread.java:662)