我正在使用Tomcat7和Solr 4.3。当并发读写数量增加时，会发生SocketException错误引起崩溃。我通过多个客户端进行并发提交和搜索。非常感谢任何帮助。以下是Tomcat日志(catalina.out)和Solr日志：
tomcat log(catalina.out):
59887611 [http-bio-8080-exec-988] ERROR org.apache.solr.servlet.SolrDispatchFilter – null:ClientAbortException: java.net.SocketException: Broken pipe
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:406)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:342)
at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:431)
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:419)
at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:91)
at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)
at sun.nio.cs.StreamEncoder.implWrite(StreamEncoder.java:282)
at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:125)
at java.io.OutputStreamWriter.write(OutputStreamWriter.java:207)
at org.apache.solr.util.FastWriter.flush(FastWriter.java:141)
at org.apache.solr.util.FastWriter.write(FastWriter.java:126)
at java.io.Writer.write(Writer.java:157)
at org.apache.solr.response.XMLWriter.startTag(XMLWriter.java:144)
at org.apache.solr.response.XMLWriter.writePrim(XMLWriter.java:347)
at org.apache.solr.response.XMLWriter.writeLong(XMLWriter.java:305)
at org.apache.solr.response.TextResponseWriter.writeVal(TextResponseWriter.java:139)
at org.apache.solr.schema.TrieField.write(TrieField.java:221)
at org.apache.solr.response.TextResponseWriter.writeVal(TextResponseWriter.java:130)
at org.apache.solr.response.XMLWriter.writeSolrDocument(XMLWriter.java:199)
at org.apache.solr.response.TextResponseWriter.writeDocuments(TextResponseWriter.java:275)
at org.apache.solr.response.TextResponseWriter.writeVal(TextResponseWriter.java:172)
at org.apache.solr.response.XMLWriter.writeResponse(XMLWriter.java:111)
at org.apache.solr.response.XMLResponseWriter.write(XMLResponseWriter.java:39)
at org.apache.solr.servlet.SolrDispatchFilter.writeResponse(SolrDispatchFilter.java:644)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:372)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:155)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: java.net.SocketException: Broken pipe
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:215)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:480)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:366)
at org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:240)
at org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:119)
at org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:192)
at org.apache.coyote.Response.doWrite(Response.java:517)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:401)
... 39 more
solr.log:
2013-09-19 05:32:13.978; org.apache.solr.common.SolrException; null:ClientAbortException: java.net.SocketException: Broken pipe
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:406)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:342)
at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:431)
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:419)
at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:91)
at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)
at sun.nio.cs.StreamEncoder.implWrite(StreamEncoder.java:282)
at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:125)
at java.io.OutputStreamWriter.write(OutputStreamWriter.java:207)
at org.apache.solr.util.FastWriter.flush(FastWriter.java:141)
at org.apache.solr.util.FastWriter.write(FastWriter.java:126)
at java.io.Writer.write(Writer.java:157)
at org.apache.solr.response.XMLWriter.startTag(XMLWriter.java:144)
at org.apache.solr.response.XMLWriter.writePrim(XMLWriter.java:347)
at org.apache.solr.response.XMLWriter.writeLong(XMLWriter.java:305)
at org.apache.solr.response.TextResponseWriter.writeVal(TextResponseWriter.java:139)
at org.apache.solr.schema.TrieField.write(TrieField.java:221)
at org.apache.solr.response.TextResponseWriter.writeVal(TextResponseWriter.java:130)
at org.apache.solr.response.XMLWriter.writeSolrDocument(XMLWriter.java:199)
at org.apache.solr.response.TextResponseWriter.writeDocuments(TextResponseWriter.java:275)
at org.apache.solr.response.TextResponseWriter.writeVal(TextResponseWriter.java:172)
at org.apache.solr.response.XMLWriter.writeResponse(XMLWriter.java:111)
at org.apache.solr.response.XMLResponseWriter.write(XMLResponseWriter.java:39)
at org.apache.solr.servlet.SolrDispatchFilter.writeResponse(SolrDispatchFilter.java:644)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:372)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:155)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: java.net.SocketException: Broken pipe
at java.net.SocketOutputStream.socketWrite0(Native Me...