commit exception after server restart

[Peter Schröder <Pe...@freenet-ag.de>]

hi,

we have some trouble with our clustered applications. after restarting one of the servers the user gets a commit exception (see below).

i think that this is already reported as a bug, but jira seems to be down...
https://issues.apache.org/cayenne/browse/CAY-796

is there something we can do to avoid that?

kind regards,
peter

STACK:
org.objectstyle.cayenne.CayenneRuntimeException
[v.1.2.3 May 7 2007] Commit Exception
unlabeledMessage:	Commit Exception 
Stack Trace:
*	org.objectstyle.cayenne.access.DataContext.flushToParent(DataContext.java:1290) 
*	org.objectstyle.cayenne.access.DataContext.commitChanges(DataContext.java:1166) 
*	de.freenet.pos.hivemind.impl.SessionServiceImpl.initSession(SessionServiceImpl.java:127) 
*	$SessionService_113d3d87533.initSession($SessionService_113d3d87533.java) 
*	de.freenet.pos.tapestry.pages.POSHomePage.pageValidate(POSHomePage.java:57) 
*	org.apache.tapestry.AbstractPage.firePageValidate(AbstractPage.java:585) 
*	org.apache.tapestry.AbstractPage.validate(AbstractPage.java:307) 
*	org.apache.tapestry.engine.RequestCycle.activate(RequestCycle.java:625) 
*	org.apache.tapestry.engine.RequestCycle.activate(RequestCycle.java:611) 
*	org.apache.tapestry.engine.HomeService.service(HomeService.java:63) 
*	$IEngineService_113d3d874cc.service($IEngineService_113d3d874cc.java) 
*	org.apache.tapestry.services.impl.EngineServiceOuterProxy.service(EngineServiceOuterProxy.java:66) 
*	org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:248) 
*	org.apache.tapestry.services.impl.InvokeEngineTerminator.service(InvokeEngineTerminator.java:60) 
*	$WebRequestServicer_113d3d874ae.service($WebRequestServicer_113d3d874ae.java) 
*	$WebRequestServicer_113d3d874aa.service($WebRequestServicer_113d3d874aa.java) 
*	org.apache.tapestry.services.impl.WebRequestServicerPipelineBridge.service(WebRequestServicerPipelineBridge.java:56) 
*	$ServletRequestServicer_113d3d87490.service($ServletRequestServicer_113d3d87490.java) 
*	org.apache.tapestry.request.DecodedRequestInjector.service(DecodedRequestInjector.java:55) 
*	$ServletRequestServicerFilter_113d3d8748c.service($ServletRequestServicerFilter_113d3d8748c.java) 
*	$ServletRequestServicer_113d3d87492.service($ServletRequestServicer_113d3d87492.java) 
*	org.apache.tapestry.multipart.MultipartDecoderFilter.service(MultipartDecoderFilter.java:52) 
*	$ServletRequestServicerFilter_113d3d8748a.service($ServletRequestServicerFilter_113d3d8748a.java) 
*	$ServletRequestServicer_113d3d87492.service($ServletRequestServicer_113d3d87492.java) 
*	org.apache.tapestry.services.impl.SetupRequestEncoding.service(SetupRequestEncoding.java:53) 
*	$ServletRequestServicerFilter_113d3d8748e.service($ServletRequestServicerFilter_113d3d8748e.java) 
*	$ServletRequestServicer_113d3d87492.service($ServletRequestServicer_113d3d87492.java) 
*	$ServletRequestServicer_113d3d86462.service($ServletRequestServicer_113d3d86462.java) 
*	org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:123) 
*	org.apache.tapestry.ApplicationServlet.doGet(ApplicationServlet.java:79) 
*	javax.servlet.http.HttpServlet.service(HttpServlet.java:690) 
*	javax.servlet.http.HttpServlet.service(HttpServlet.java:803) 
*	org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269) 
*	org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) 
*	org.objectstyle.cayenne.conf.WebApplicationContextFilter.doFilter(WebApplicationContextFilter.java:181) 
*	org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) 
*	org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) 
*	org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210) 
*	org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174) 
*	org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
*	org.apache.catalina.cluster.session.JvmRouteBinderValve.invoke(JvmRouteBinderValve.java:210) 
*	org.apache.catalina.cluster.tcp.ReplicationValve.invoke(ReplicationValve.java:347) 
*	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) 
*	org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) 
*	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151) 
*	org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200) 
*	org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283) 
*	org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:773) 
*	org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:703) 
*	org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:895) 
*	org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685) 
*	java.lang.Thread.run(Thread.java:619) 
*	Caused by: java.lang.NullPointerException 
*	org.objectstyle.cayenne.access.DataRowStore.sendUpdateNotification(DataRowStore.java:709) 
*	org.objectstyle.cayenne.access.DataRowStore.processSnapshotChanges(DataRowStore.java:574) 
*	org.objectstyle.cayenne.access.DataDomainFlushAction.postprocess(DataDomainFlushAction.java:278) 
*	org.objectstyle.cayenne.access.DataDomainFlushAction.flush(DataDomainFlushAction.java:178) 
*	org.objectstyle.cayenne.access.DataDomain.onSyncFlush(DataDomain.java:846) 
*	org.objectstyle.cayenne.access.DataDomain$2.transform(DataDomain.java:817) 
*	org.objectstyle.cayenne.access.DataDomain.runInTransaction(DataDomain.java:872) 
*	org.objectstyle.cayenne.access.DataDomain.onSync(DataDomain.java:814) 
*	org.objectstyle.cayenne.access.DataContext.flushToParent(DataContext.java:1262) 
*	... 51 more