java.util.ConcurrentModificationException

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  • h3. Steps to reproduce # run the project https://github.com/hawkchen/zssperformance on Tomcat 7 # use Jmeter 2.10 to open test plan *IntensiveFormula.jmx* (the file is under [PROJECT-BASE]\TestPlan)(original test plan https://docs.google.com/a/potix.com/document/d/1pK-mi4hO14mKkmlf1qZLwi-wp3uU04wcMVzHk6MuS5I/edit#heading=h.x9e2wlg0mqa7) # set number of thread to 50 and run !numberOfThread.png! h4. Expected The tomcat 7 console shows no error. h4. What I actually see The tomcat 7 console shows many ConcurrentModificationException. {quote} SEVERE: java.util.ConcurrentModificationException at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.ja va:373) at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:392) at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:391) at org.zkoss.util.CacheMap.expunge(CacheMap.java:228) at org.zkoss.util.CacheMap.doExpunge(CacheMap.java:208) at org.zkoss.util.CacheMap.tryExpunge(CacheMap.java:202) at org.zkoss.util.CacheMap.get(CacheMap.java:391) at org.zkoss.poi.ss.format.CellNumberFormatter.getFormatter(CellNumberFo rmatter.java:112) at org.zkoss.poi.ss.format.CellFormat$1.apply(CellFormat.java:119) at org.zkoss.zss.model.impl.sys.FormatEngineImpl.format0(FormatEngineImp l.java:94) at org.zkoss.zss.model.impl.sys.FormatEngineImpl.format(FormatEngineImpl .java:62) at org.zkoss.zss.ui.impl.CellFormatHelper.getInnerHtmlStyle(CellFormatHe lper.java:323) at org.zkoss.zss.ui.Spreadsheet$ExtraCtrl.getCellAttr(Spreadsheet.java:3 290) at org.zkoss.zss.ui.Spreadsheet$ExtraCtrl.getRangeAttrs(Spreadsheet.java :3144) at org.zkoss.zss.ui.Spreadsheet.responseUpdateCell(Spreadsheet.java:2778 ) at org.zkoss.zss.ui.Spreadsheet.updateCell(Spreadsheet.java:2747) at org.zkoss.zss.ui.Spreadsheet.access$4000(Spreadsheet.java:213) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher.onCellContentC hange(Spreadsheet.java:2346) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher.access$1200(Sp readsheet.java:2058) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher$7.onEvent(Spre adsheet.java:2102) at org.zkoss.zss.ui.ModelEventDispatcher.onEvent(ModelEventDispatcher.ja va:49) at org.zkoss.zss.model.impl.EventQueueListenerAdaptor$WrappedListener.on Event(EventQueueListenerAdaptor.java:105) at org.zkoss.zk.ui.event.impl.DesktopEventQueue$QueueListener.onEvent(De sktopEventQueue.java:152) at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2746 ) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2717 ) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2658 ) at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136) at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1765 ) at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1550) at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1260) at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.ja va:603) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java :485) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.jav a:494) at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl icationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF ilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV alve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV alve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authentica torBase.java:501) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j ava:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j ava:102) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java: 950) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal ve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav a:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp 11Processor.java:1040) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process( AbstractProtocol.java:607) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpo int.java:2442) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoin t.java:2431) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExec utor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor .java:908) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskTh read.java:61) at java.lang.Thread.run(Thread.java:662) {quote}
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  • h3. Steps to reproduce # run the project https://github.com/hawkchen/zssperformance on Tomcat 7 # use Jmeter 2.10 to open test plan *IntensiveFormula.jmx* (the file is under [PROJECT-BASE]\TestPlan)(original test plan https://docs.google.com/a/potix.com/document/d/1pK-mi4hO14mKkmlf1qZLwi-wp3uU04wcMVzHk6MuS5I/edit#heading=h.x9e2wlg0mqa7) # set number of thread to 50 and run !numberOfThread.png! h4. Expected The tomcat 7 console shows no error. h4. What I actually see The tomcat 7 console shows many ConcurrentModificationException. {quote} SEVERE: java.util.ConcurrentModificationException at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.ja va:373) at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:392) at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:391) at org.zkoss.util.CacheMap.expunge(CacheMap.java:228) at org.zkoss.util.CacheMap.doExpunge(CacheMap.java:208) at org.zkoss.util.CacheMap.tryExpunge(CacheMap.java:202) at org.zkoss.util.CacheMap.get(CacheMap.java:391) at org.zkoss.poi.ss.format.CellNumberFormatter.getFormatter(CellNumberFo rmatter.java:112) at org.zkoss.poi.ss.format.CellFormat$1.apply(CellFormat.java:119) at org.zkoss.zss.model.impl.sys.FormatEngineImpl.format0(FormatEngineImp l.java:94) at org.zkoss.zss.model.impl.sys.FormatEngineImpl.format(FormatEngineImpl .java:62) at org.zkoss.zss.ui.impl.CellFormatHelper.getInnerHtmlStyle(CellFormatHe lper.java:323) at org.zkoss.zss.ui.Spreadsheet$ExtraCtrl.getCellAttr(Spreadsheet.java:3 290) at org.zkoss.zss.ui.Spreadsheet$ExtraCtrl.getRangeAttrs(Spreadsheet.java :3144) at org.zkoss.zss.ui.Spreadsheet.responseUpdateCell(Spreadsheet.java:2778 ) at org.zkoss.zss.ui.Spreadsheet.updateCell(Spreadsheet.java:2747) at org.zkoss.zss.ui.Spreadsheet.access$4000(Spreadsheet.java:213) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher.onCellContentC hange(Spreadsheet.java:2346) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher.access$1200(Sp readsheet.java:2058) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher$7.onEvent(Spre adsheet.java:2102) at org.zkoss.zss.ui.ModelEventDispatcher.onEvent(ModelEventDispatcher.ja va:49) at org.zkoss.zss.model.impl.EventQueueListenerAdaptor$WrappedListener.on Event(EventQueueListenerAdaptor.java:105) at org.zkoss.zk.ui.event.impl.DesktopEventQueue$QueueListener.onEvent(De sktopEventQueue.java:152) at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2746 ) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2717 ) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2658 ) at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136) at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1765 ) at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1550) at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1260) at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.ja va:603) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java :485) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.jav a:494) at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl icationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF ilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV alve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV alve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authentica torBase.java:501) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j ava:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j ava:102) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java: 950) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal ve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav a:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp 11Processor.java:1040) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process( AbstractProtocol.java:607) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpo int.java:2442) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoin t.java:2431) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExec utor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor .java:908) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskTh read.java:61) at java.lang.Thread.run(Thread.java:662) {quote}
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  • h2. Steps to Reproduce # get test application source https://github.com/hawkchen/zssperformance/tree/3.7 # modify dependencies in pom.xml, change zssex to zss # package an OSE version WAR # open test plan {{DependentFormula.jmx}} with jmeter # set visit zul to {{dependentFormula.zul}} # set thread count to *50* (or bigger) # start running ## The issue doesn't always happen for each run, please try to run the test plan several times h3. Actual Result Test report : https://docs.google.com/a/potix.com/spreadsheets/d/1aXKKw6Y81DP_PMr1OqK6qItD_O1AgTk-sfustq6cczY/edit#gid=941648103 Please see 3.6.1.FL.20150115-Eval, CE, concurrent user 50 and 150. {code} Jan 28, 2015 4:30:28 PM org.zkoss.zk.ui.impl.UiEngineImpl handleError SEVERE: java.util.ConcurrentModificationException at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.ja va:394) at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:413) at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:412) at org.zkoss.util.CacheMap.expunge(CacheMap.java:228) at org.zkoss.util.CacheMap.doExpunge(CacheMap.java:208) at org.zkoss.util.CacheMap.tryExpunge(CacheMap.java:202) at org.zkoss.util.CacheMap.get(CacheMap.java:391) at org.zkoss.poi.ss.format.CellNumberFormatter.getFormatter(CellNumberFo rmatter.java:112) at org.zkoss.poi.ss.format.CellFormat$1.apply(CellFormat.java:119) at org.zkoss.zss.model.impl.sys.FormatEngineImpl.format0(FormatEngineImp l.java:105) at org.zkoss.zss.model.impl.sys.FormatEngineImpl.format(FormatEngineImpl .java:67) at org.zkoss.zss.ui.impl.CellFormatHelper.getFontHtmlStyle(CellFormatHel per.java:391) at org.zkoss.zss.ui.Spreadsheet$ExtraCtrl.getCellAttr(Spreadsheet.java:3 354) at org.zkoss.zss.ui.Spreadsheet$ExtraCtrl.getRangeAttrs(Spreadsheet.java :3200) at org.zkoss.zss.ui.Spreadsheet.responseUpdateCell(Spreadsheet.java:2834 ) at org.zkoss.zss.ui.Spreadsheet.updateCell(Spreadsheet.java:2803) at org.zkoss.zss.ui.Spreadsheet.access$4200(Spreadsheet.java:222) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher.onCellContentC hange(Spreadsheet.java:2396) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher.access$1300(Sp readsheet.java:2094) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher$8.onEvent(Spre adsheet.java:2145) at org.zkoss.zss.ui.ModelEventDispatcher.onEvent(ModelEventDispatcher.ja va:49) at org.zkoss.zss.model.impl.EventQueueListenerAdaptor$WrappedListener.on Event(EventQueueListenerAdaptor.java:105) at org.zkoss.zk.ui.event.impl.DesktopEventQueue$QueueListener.onEvent(De sktopEventQueue.java:162) at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2752 ) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2723 ) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2664 ) at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136) at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1765 ) at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1550) at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1260) at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.ja va:603) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java :485) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.jav a:494) at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) {code} h3. Expected Result no exception
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  • h2. Steps to Reproduce # get test application source https://github.com/hawkchen/zssperformance/tree/3.7 # modify dependencies in pom.xml, change zssex to zss # package an OSE version WAR # open test plan {{DependentFormula.jmx}} with jmeter # set visit zul to {{dependentFormula.zul}} # set thread count to *50* (or bigger) # start running ## The issue doesn't always happen for each run, please try to run the test plan several times h3. Actual Result Test report : https://docs.google.com/a/potix.com/spreadsheets/d/1aXKKw6Y81DP_PMr1OqK6qItD_O1AgTk-sfustq6cczY/edit#gid=941648103 Please see 3.6.1.FL.20150115-Eval, CE, concurrent user 50 and 150. {code} Jan 28, 2015 4:30:28 PM org.zkoss.zk.ui.impl.UiEngineImpl handleError SEVERE: java.util.ConcurrentModificationException at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.ja va:394) at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:413) at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:412) at org.zkoss.util.CacheMap.expunge(CacheMap.java:228) at org.zkoss.util.CacheMap.doExpunge(CacheMap.java:208) at org.zkoss.util.CacheMap.tryExpunge(CacheMap.java:202) at org.zkoss.util.CacheMap.get(CacheMap.java:391) at org.zkoss.poi.ss.format.CellNumberFormatter.getFormatter(CellNumberFo rmatter.java:112) at org.zkoss.poi.ss.format.CellFormat$1.apply(CellFormat.java:119) at org.zkoss.zss.model.impl.sys.FormatEngineImpl.format0(FormatEngineImp l.java:105) at org.zkoss.zss.model.impl.sys.FormatEngineImpl.format(FormatEngineImpl .java:67) at org.zkoss.zss.ui.impl.CellFormatHelper.getFontHtmlStyle(CellFormatHel per.java:391) at org.zkoss.zss.ui.Spreadsheet$ExtraCtrl.getCellAttr(Spreadsheet.java:3 354) at org.zkoss.zss.ui.Spreadsheet$ExtraCtrl.getRangeAttrs(Spreadsheet.java :3200) at org.zkoss.zss.ui.Spreadsheet.responseUpdateCell(Spreadsheet.java:2834 ) at org.zkoss.zss.ui.Spreadsheet.updateCell(Spreadsheet.java:2803) at org.zkoss.zss.ui.Spreadsheet.access$4200(Spreadsheet.java:222) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher.onCellContentC hange(Spreadsheet.java:2396) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher.access$1300(Sp readsheet.java:2094) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher$8.onEvent(Spre adsheet.java:2145) at org.zkoss.zss.ui.ModelEventDispatcher.onEvent(ModelEventDispatcher.ja va:49) at org.zkoss.zss.model.impl.EventQueueListenerAdaptor$WrappedListener.on Event(EventQueueListenerAdaptor.java:105) at org.zkoss.zk.ui.event.impl.DesktopEventQueue$QueueListener.onEvent(De sktopEventQueue.java:162) at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2752 ) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2723 ) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2664 ) at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136) at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1765 ) at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1550) at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1260) at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.ja va:603) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java :485) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.jav a:494) at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) {code} h3. Expected Result no exception
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  • GitHub comment 1202#3640066
    via GitHub by bstansberry
    ,
    • java.util.ConcurrentModificationException at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:373) at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:392) at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:391) at org.zkoss.util.CacheMap.expunge(CacheMap.java:228) at org.zkoss.util.CacheMap.doExpunge(CacheMap.java:208) at org.zkoss.util.CacheMap.tryExpunge(CacheMap.java:202) at org.zkoss.util.CacheMap.get(CacheMap.java:391) at org.zkoss.poi.ss.format.CellNumberFormatter.getFormatter(CellNumberFormatter.java:112) at org.zkoss.poi.ss.format.CellFormat$1.apply(CellFormat.java:119) at org.zkoss.zss.model.impl.sys.FormatEngineImpl.format0(FormatEngineImpl.java:94) at org.zkoss.zss.model.impl.sys.FormatEngineImpl.format(FormatEngineImpl.java:62) at org.zkoss.zss.ui.impl.CellFormatHelper.getInnerHtmlStyle(CellFormatHelper.java:323) at org.zkoss.zss.ui.Spreadsheet$ExtraCtrl.getCellAttr(Spreadsheet.java:3290) at org.zkoss.zss.ui.Spreadsheet$ExtraCtrl.getRangeAttrs(Spreadsheet.java:3144) at org.zkoss.zss.ui.Spreadsheet.responseUpdateCell(Spreadsheet.java:2778) at org.zkoss.zss.ui.Spreadsheet.updateCell(Spreadsheet.java:2747) at org.zkoss.zss.ui.Spreadsheet.access$4000(Spreadsheet.java:213) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher.onCellContentChange(Spreadsheet.java:2346) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher.access$1200(Spreadsheet.java:2058) at org.zkoss.zss.ui.Spreadsheet$InnerModelEventDispatcher$7.onEvent(Spreadsheet.java:2102) at org.zkoss.zss.ui.ModelEventDispatcher.onEvent(ModelEventDispatcher.java:49) at org.zkoss.zss.model.impl.EventQueueListenerAdaptor$WrappedListener.onEvent(EventQueueListenerAdaptor.java:105) at org.zkoss.zk.ui.event.impl.DesktopEventQueue$QueueListener.onEvent(DesktopEventQueue.java:152) at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2746) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2717) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2658) at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136) at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1765) at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1550) at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1260) at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.java:603) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java:485) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.java:494) at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2442) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2431) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:662)

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