java「OutOfMemory錯誤」Jena應用程序

我正在嘗試使用Jena的讀取方法來讀取大尺寸數據集（超過1 GB），但我收到內存不足錯誤。我嘗試增加到2048年的tomcat heapsize（-Xmx參數），也是eclipse.ini文件中的相同參數。但是我無法獲得工作解決方案由於我將數據集解析爲hashmaps並在網頁上顯示內容，因此我願意接受有關如何處理大型數據集的任何建議。下面java「OutOfMemory錯誤」Jena應用程序

控制檯錯誤是：

Exception in thread "http-bio-8080-AsyncTimeout" java.lang.OutOfMemoryError: GC overhead limit exceeded 
    at java.util.concurrent.ConcurrentLinkedQueue.iterator(ConcurrentLinkedQueue.java:667) 
    at org.apache.tomcat.util.net.JIoEndpoint$AsyncTimeout.run(JIoEndpoint.java:157) 
    at java.lang.Thread.run(Thread.java:745) 
Exception in thread "http-bio-8080-exec-6" java.lang.OutOfMemoryError: GC overhead limit exceeded 
    at java.util.concurrent.CopyOnWriteArrayList.iterator(CopyOnWriteArrayList.java:959) 
    at com.hp.hpl.jena.graph.impl.SimpleEventManager.notifyAddTriple(SimpleEventManager.java:91) 
    at com.hp.hpl.jena.graph.impl.GraphBase.notifyAdd(GraphBase.java:124) 
    at com.hp.hpl.jena.graph.impl.GraphBase.add(GraphBase.java:203) 
    at org.apache.jena.riot.system.StreamRDFLib$ParserOutputGraph.triple(StreamRDFLib.java:165) 
    at org.apache.jena.riot.lang.LangNTriples.runParser(LangNTriples.java:56) 
    at org.apache.jena.riot.lang.LangBase.parse(LangBase.java:42) 
    at org.apache.jena.riot.RDFParserRegistry$ReaderRIOTLang.read(RDFParserRegistry.java:182) 
    at org.apache.jena.riot.RDFDataMgr.process(RDFDataMgr.java:906) 
    at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:257) 
    at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:243) 
    at org.apache.jena.riot.adapters.RDFReaderRIOT_Web.read(RDFReaderRIOT_Web.java:96) 
    at com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:235) 
    at com.packages.rdf.FileAnalyse.GetFileComponents(FileAnalyse.java:77) 
    at com.packages.servlets.CreatePatternServlet.GetStatements(CreatePatternServlet.java:96) 
    at com.packages.servlets.CreatePatternServlet.doPost(CreatePatternServlet.java:68) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070) 

Exception in thread "ContainerBackgroundProcessor[StandardEngine[Catalina]]" java.lang.OutOfMemoryError: GC overhead limit exceeded 
    at org.apache.naming.resources.FileDirContext.file(FileDirContext.java:765) 
    at org.apache.naming.resources.FileDirContext.doGetAttributes(FileDirContext.java:398) 
    at org.apache.naming.resources.BaseDirContext.getAttributes(BaseDirContext.java:1137) 
    at org.apache.naming.resources.BaseDirContext.getAttributes(BaseDirContext.java:1090) 
    at org.apache.naming.resources.ProxyDirContext.getAttributes(ProxyDirContext.java:882) 
    at org.apache.catalina.loader.WebappClassLoader.modified(WebappClassLoader.java:1026) 
    at org.apache.catalina.loader.WebappLoader.modified(WebappLoader.java:500) 
    at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:420) 
    at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1345) 
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1546) 
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1556) 
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1556) 
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1524) 
    at java.lang.Thread.run(Thread.java:745) 
Exception in thread "http-bio-8080-exec-6" java.lang.OutOfMemoryError: GC overhead limit exceeded 
    at org.apache.jena.riot.tokens.TokenizerText.parseToken(TokenizerText.java:170) 
    at org.apache.jena.riot.tokens.TokenizerText.hasNext(TokenizerText.java:86) 
    at org.apache.jena.atlas.iterator.PeekIterator.fill(PeekIterator.java:50) 
    at org.apache.jena.atlas.iterator.PeekIterator.next(PeekIterator.java:92) 
    at org.apache.jena.riot.lang.LangEngine.nextToken(LangEngine.java:99) 
    at org.apache.jena.riot.lang.LangNTriples.parseOne(LangNTriples.java:71) 
    at org.apache.jena.riot.lang.LangNTriples.runParser(LangNTriples.java:54) 
    at org.apache.jena.riot.lang.LangBase.parse(LangBase.java:42) 
    at org.apache.jena.riot.RDFParserRegistry$ReaderRIOTLang.read(RDFParserRegistry.java:182) 
    at org.apache.jena.riot.RDFDataMgr.process(RDFDataMgr.java:906) 
    at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:257) 
    at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:243) 
    at org.apache.jena.riot.adapters.RDFReaderRIOT_Web.read(RDFReaderRIOT_Web.java:96) 
    at com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:235) 
    at com.packages.rdf.FileAnalyse.GetFileComponents(FileAnalyse.java:77) 
    at com.packages.servlets.CreatePatternServlet.GetStatements(CreatePatternServlet.java:96) 
    at com.packages.servlets.CreatePatternServlet.doPost(CreatePatternServlet.java:68) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)

來源

2015-03-18 emrahozkan

僅僅因爲你的文件是1 GB，並不意味着你只會在內存中使用1GB--由於各種原因，它通常更多。您可以嘗試將堆大小提高到更高的值，例如8或16 GB？（順便說一下，你不必寫'2048M' - 你可以只寫'2G'並且它的數量是相同的） – childofsoong 2015-03-18 22:11:50

我嘗試了4g，但對於這個應用程序，我可能不得不分析10 GB的文件，所以我不知道它是否足夠 – emrahozkan 2015-03-18 22:13:54

然後，您可能必須找到一個不會嘗試一次將整個文件加載到內存中的庫。恐怕我不知道有什麼會讓我頭昏眼花。但是，您的分析可能是在多個較小的文件上運行，然後放在一起？如果是這樣，你可以將巨型文件分解成更小的文件。 – childofsoong 2015-03-18 22:19:05

看到這樣一條： GC overhead limit exceeded

我想你一定要定製GC。閱讀關於gc實現的oracle文章，也許你會在那裏取得一些進展。

來源

2015-03-18 22:54:37 Radek

java「OutOfMemory錯誤」Jena應用程序

回答

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