[
https://issues.apache.org/jira/browse/OLIO-144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12861854#action_12861854
]
James Zubb commented on OLIO-144:
---------------------------------
There seems to be some sort of bug in Eclipselink or Glassfish. I removed the
iterator from the CommentsRating iterator from the getSocialEvent function for
the comments (just did a direct getComments) which fixed the above error but
cause the cconcurrency exception to occur at the getCommentsRating function at
the for loop. So I completely removed this (just set it to immediately return
null) and I get another concurrency exception in ControllerServlet.java:
[#|2010-04-27T16:29:11.228-0700|SEVERE|sun-appserver2.1|javax.enterprise.system.container.web|_ThreadID=26;_ThreadName=httpSSLWorkerThread-8080-28;_RequestID=b27ce8e2-4580-48e5-b247-cef96f117c07;|StandardWrapperValve[ControllerServlet]:
PWC1406: Servlet.service() for servlet ControllerServlet threw exception
Local Exception Stack:
Exception [EclipseLink-2004] (Eclipse Persistence Services -
1.1.3.v20091002-r5404): org.eclipse.persistence.exceptions.ConcurrencyException
Exception Description: A signal was attempted before wait() on
ConcurrencyManager. This normally means that an attempt was made to
commit or rollback a transaction before it was started, or to rollback a
transaction twice.
at
org.eclipse.persistence.exceptions.ConcurrencyException.signalAttemptedBeforeWait(ConcurrencyException.java:84)
at
org.eclipse.persistence.internal.helper.ConcurrencyManager.releaseReadLock(ConcurrencyManager.java:478)
at
org.eclipse.persistence.internal.identitymaps.CacheKey.releaseReadLock(CacheKey.java:433)
at
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.cloneAndRegisterObject(UnitOfWorkImpl.java:939)
at
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.cloneAndRegisterObject(UnitOfWorkImpl.java:833)
at
org.eclipse.persistence.internal.sessions.UnitOfWorkIdentityMapAccessor.getAndCloneCacheKeyFromParent(UnitOfWorkIdentityMapAccessor.java:171)
at
org.eclipse.persistence.internal.sessions.UnitOfWorkIdentityMapAccessor.getFromIdentityMap(UnitOfWorkIdentityMapAccessor.java:110)
at
org.eclipse.persistence.internal.sessions.IdentityMapAccessor.getFromIdentityMap(IdentityMapAccessor.java:327)
at
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerExistingObject(UnitOfWorkImpl.java:3776)
at
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerExistingObject(UnitOfWorkImpl.java:3736)
at
org.eclipse.persistence.queries.ObjectBuildingQuery.registerIndividualResult(ObjectBuildingQuery.java:362)
at
org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildWorkingCopyCloneNormally(ObjectBuilder.java:582)
at
org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObjectInUnitOfWork(ObjectBuilder.java:544)
at
org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:485)
at
org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:437)
at
org.eclipse.persistence.queries.ObjectLevelReadQuery.buildObject(ObjectLevelReadQuery.java:569)
at
org.eclipse.persistence.queries.ReadAllQuery.registerResultInUnitOfWork(ReadAllQuery.java:904)
at
org.eclipse.persistence.queries.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:490)
at
org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:928)
at
org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:664)
at
org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:889)
at
org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:458)
at
org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork(ObjectLevelReadQuery.java:952)
at
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2750)
at
org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1181)
at
org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1165)
at
org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:81)
at
org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:71)
at
org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83)
at
org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiateImpl(UnitOfWorkValueHolder.java:161)
at
org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiate(UnitOfWorkValueHolder.java:230)
at
org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83)
at
org.eclipse.persistence.indirection.IndirectList.buildDelegate(IndirectList.java:220)
at
org.eclipse.persistence.indirection.IndirectList.getDelegate(IndirectList.java:386)
at
org.eclipse.persistence.indirection.IndirectList$1.<init>(IndirectList.java:514)
at
org.eclipse.persistence.indirection.IndirectList.listIterator(IndirectList.java:513)
at
org.eclipse.persistence.indirection.IndirectList.iterator(IndirectList.java:477)
at
org.apache.taglibs.standard.tag.common.core.ForEachSupport.toForEachIterator(ForEachSupport.java:382)
at
org.apache.taglibs.standard.tag.common.core.ForEachSupport.supportedTypeForEachIterator(ForEachSupport.java:258)
at
org.apache.taglibs.standard.tag.common.core.ForEachSupport.prepare(ForEachSupport.java:189)
at
javax.servlet.jsp.jstl.core.LoopTagSupport.doStartTag(LoopTagSupport.java:287)
at org.apache.jsp.event_jsp._jspx_meth_c_forEach_1(event_jsp.java from
:1077)
at org.apache.jsp.event_jsp._jspx_meth_c_otherwise_3(event_jsp.java
from :1047)
at org.apache.jsp.event_jsp._jspx_meth_c_choose_3(event_jsp.java from
:964)
at org.apache.jsp.event_jsp._jspService(event_jsp.java from :264)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:109)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:389)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:486)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:380)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at
org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:427)
at
org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:873)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:723)
at
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:679)
at
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:594)
at
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:1013)
at org.apache.jsp.site_jsp._jspx_meth_c_when_0(site_jsp.java from :479)
at org.apache.jsp.site_jsp._jspService(site_jsp.java from :166)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:109)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:389)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:486)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:380)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at
org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:427)
at
org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:873)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:723)
at
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:558)
at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:490)
at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:382)
at
org.apache.olio.webapp.controller.ControllerServlet.process(ControllerServlet.java:63)
at
org.apache.olio.webapp.controller.ControllerServlet.doGet(ControllerServlet.java:93)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at
org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:427)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:315)
at
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:287)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:218)
at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
at
com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:222)
at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1093)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:166)
at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1093)
at
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:291)
at
com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:666)
at
com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:597)
at
com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:872)
at
com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
at
com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
at
com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
at
com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:264)
at
com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)
> Encounter Eclipselink ConcurrencyException under heavy load
> -----------------------------------------------------------
>
> Key: OLIO-144
> URL: https://issues.apache.org/jira/browse/OLIO-144
> Project: Olio
> Issue Type: Bug
> Components: java-app
> Affects Versions: 0.2
> Environment: CentOS 5.3 4GB RAM 4vCPU
> ESX 4
> Glassfish 2.2.1, JDK 1.6U18
> Eclipselink 1.1.3
> 400 user load
> Reporter: James Zubb
> Assignee: Shanti Subramanyam
>
> I have been seeing eclipselink concurrencyexception when the system is under
> heavy load. Once the exception occurs the entire app hangs. Here is the
> exception:
> [#|2010-02-10T16:15:10.003-0800|WARNING|sun-appserver2.1|org.eclipse.persistence.session.file:/opt/glassfish/domains/domain1/applications/j2ee-modules/webapp/WEB-INF/classes/-BPWebappPu|_ThreadID=16;_ThreadName=httpSSLWorkerThread-8080-0;_RequestID=57c0781d-255f-4f9e-9ccf-41a5c296befe;|
> Local Exception Stack:
> Exception [EclipseLink-2004] (Eclipse Persistence Services -
> 1.1.3.v20091002-r5404):
> org.eclipse.persistence.exceptions.ConcurrencyException
> Exception Description: A signal was attempted before wait() on
> ConcurrencyManager. This normally means that an attempt was made to commit or
> rollback a transaction before it was started, or to rollback a transaction
> twice.
> at
> org.eclipse.persistence.exceptions.ConcurrencyException.signalAttemptedBeforeWait(ConcurrencyException.java:84)
> at
> org.eclipse.persistence.internal.helper.ConcurrencyManager.releaseReadLock(ConcurrencyManager.java:478)
> at
> org.eclipse.persistence.internal.identitymaps.CacheKey.releaseReadLock(CacheKey.java:433)
> at
> org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.cloneAndRegisterObject(UnitOfWorkImpl.java:939)
> at
> org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.cloneAndRegisterObject(UnitOfWorkImpl.java:833)
> at
> org.eclipse.persistence.internal.sessions.UnitOfWorkIdentityMapAccessor.getAndCloneCacheKeyFromParent(UnitOfWorkIdentityMapAccessor.java:171)
> at
> org.eclipse.persistence.internal.sessions.UnitOfWorkIdentityMapAccessor.getFromIdentityMap(UnitOfWorkIdentityMapAccessor.java:110)
> at
> org.eclipse.persistence.internal.sessions.IdentityMapAccessor.getFromIdentityMap(IdentityMapAccessor.java:327)
> at
> org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerExistingObject(UnitOfWorkImpl.java:3776)
> at
> org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerExistingObject(UnitOfWorkImpl.java:3736)
> at
> org.eclipse.persistence.queries.ObjectBuildingQuery.registerIndividualResult(ObjectBuildingQuery.java:362)
> at
> org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildWorkingCopyCloneNormally(ObjectBuilder.java:582)
> at
> org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObjectInUnitOfWork(ObjectBuilder.java:544)
> at
> org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:485)
> at
> org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:437)
> at
> org.eclipse.persistence.queries.ObjectLevelReadQuery.buildObject(ObjectLevelReadQuery.java:569)
> at
> org.eclipse.persistence.queries.ReadAllQuery.registerResultInUnitOfWork(ReadAllQuery.java:904)
> at
> org.eclipse.persistence.queries.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:490)
> at
> org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:928)
> at
> org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:664)
> at
> org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:889)
> at
> org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:458)
> at
> org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork(ObjectLevelReadQuery.java:952)
> at
> org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2750)
> at
> org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1181)
> at
> org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1165)
> at
> org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:81)
> at
> org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:71)
> at
> org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83)
> at
> org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiateImpl(UnitOfWorkValueHolder.java:161)
> at
> org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiate(UnitOfWorkValueHolder.java:230)
> at
> org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:83)
> at
> org.eclipse.persistence.indirection.IndirectList.buildDelegate(IndirectList.java:220)
> at
> org.eclipse.persistence.indirection.IndirectList.getDelegate(IndirectList.java:386)
> at
> org.eclipse.persistence.indirection.IndirectList$1.<init>(IndirectList.java:514)
> at
> org.eclipse.persistence.indirection.IndirectList.listIterator(IndirectList.java:513)
> at
> org.eclipse.persistence.indirection.IndirectList.iterator(IndirectList.java:477)
> at
> org.apache.olio.webapp.model.ModelFacade.getSocialEvent(ModelFacade.java:583)
> at
> org.apache.olio.webapp.controller.EventAction.process(EventAction.java:71)
> at
> org.apache.olio.webapp.controller.ControllerServlet.process(ControllerServlet.java:61)
> at
> org.apache.olio.webapp.controller.ControllerServlet.doGet(ControllerServlet.java:93)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
> at
> org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:427)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:315)
> at
> org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:287)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:218)
> at
> org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
> at
> org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
> at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
> at
> com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:222)
> at
> org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
> at
> org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1093)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:166)
> at
> org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
> at
> org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1093)
> at
> org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:291)
> at
> com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:666)
> at
> com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:597)
> at
> com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:872)
> at
> com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
> at
> com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
> at
> com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
> at
> com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:264)
> at
> com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)
> |#]
> The culprit is the comments. I modified the allocation size of the
> CommentsRating table to 50000 (it is currently set at 20000) and it appears
> to fix this.
> I have also encountered this problem using Eclipselink 2.0 on Glassfish
> 2.2.1, I haven't tried Glassfish 3.
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