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Can any one help me to find out the error cause in tomcat. i m using solr in it. starting it works fine. later i will raise this error. after restarting it works fine. please help me to find out the error.
Mar 7, 2011 10:36:47 AM org.apache.solr.common.SolrException log SEVERE: java.lang.RuntimeException: java.lang.OutOfMemoryError: Java heap space at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1068) at org.apache.solr.update.DirectUpdateHandler2.commit(DirectUpdateHandler2.java:418) at org.apache.solr.update.processor.RunUpdateProcessor.processCommit(RunUpdateProcessorFactory.java:85) at org.apache.solr.handler.XMLLoader.processUpdate(XMLLoader.java:169) at org.apache.solr.handler.XMLLoader.load(XMLLoader.java:69) at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:54) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1316) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:338) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:241) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:212) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.OutOfMemoryError: Java heap space
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1) An easy way to solve OutOfMemoryError in java is to increase the maximum heap size by using JVM options "-Xmx512M", this will immediately solve your OutOfMemoryError.
As rule of thumb, the minimum size of direct memory recommended is 8G for a production system if docValues is not used in schema and 12-16G if docValues is used. A related configuration is block cache slab count (Cloudera Manager->Solr configuration->slab count) which needs to match direct memory size.
The execution thread that is responsible to clear the heap space is the Garbage Collector. The task of the Garbage Collector is to find all objects that are not referenced at all and reclaim their space. Usually, a Garbage Collector is being executed periodically by the JVM, in order for new space to be created.
Try to increase your memory
Either set the environment variable JAVA_OPTS="-Xms256m -Xmx500m" which means heap start size is 256 MB, max 512 MB. Or edit your catalina.bat or .sh and add this line there.
You have to play around with these values, some weeks ago I had an SOLR indexer job, about 2 GB of data, 700MB heap were required.
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