[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3876) collection [] was not processed by flush() triggering for unknown reasons
Bob Glamm (JIRA)
noreply at atlassian.com
Tue Aug 9 03:13:03 EDT 2011
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3876?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=43194#comment-43194 ]
Bob Glamm commented on HHH-3876:
--------------------------------
Ugh. I just tripped this with 3.5.6-Final and 3.6.6.Final, using Hibernate strictly as a JPA 2 provider.
The easiest way to replicate it is with a structure something like this:
{code:java}
public enum UserRole {
ROLE_BASIC_USER,
ROLE_SITE_ADMIN,
...
}
@Entity
public class User {
...
@Enumerated(EnumType.STRING)
@ElementCollection(fetch=FetchType.LAZY)
@CollectionTable(...)
private Set<UserRole> userRoles;
...
}
@Embeddable
public class Vote {
...
@ManyToOne
private User votingUser;
...
}
@Entity
public class Game {
...
boolean purchased;
...
@ElementCollection(fetch=FetchType.LAZY, targetClass=Vote.class)
@CollectionTable(...)
@Valid
@NotNull
private Set<Vote> votes = new HashSet<Vote>();
...
}
{code}
Create several User objects each with various UserRoles. Create a Game object, add several Vote objects to the Game object. Then, within a transaction that retrieves a Game object and performs Game.setPurchased(true), you'll get "collection[] was not processed by flush()" on User.userRoles. During the COMMIT phase of the transaction, Hibernate's debug messages indicate that it is loading all of the Vote objects as well as all of the UserRole objects - and, judging by other Hibernate issues (and my own experimentation), it appears to be loading all those objects because of the @NotNull and @Valid annotations sitting on Set<Vote> votes.
Changing the fetch type to FetchType.EAGER on BOTH collections (Set<Vote> votes and Set<UserRole> userRoles) is a workaround for the problem, but that is an awful solution, since both collections could be large. Eliminating @NotNull and @Valid from Set<Vote> votes also fixes the problem, but that renders Hibernate Validation useless for that column.
> collection [] was not processed by flush() triggering for unknown reasons
> -------------------------------------------------------------------------
>
> Key: HHH-3876
> URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3876
> Project: Hibernate Core
> Issue Type: Bug
> Components: core
> Affects Versions: 3.5.0.Beta-1
> Reporter: Mark Derricutt
>
> We've started to notice the following exceptions being triggered from Hibernate 3.5.0-SNAPSHOT (built locally), but only under certain circumstances (editing a specific user, whilst being logged into the application as a specific user). After stepping through both our application and hibernate through the whole update/commit process being run, I can't find anything that would be causing this problem.
> During processing, I see calls to org.hibernate.engine.Collections#prepareCollectionForUpdate for CollectionEntry[smx3.schema.PartyRole.agreementsFrom#2006094] (and other elements in the same collection) which is listed in the trace below.
> The collection which triggers the exception isn't consistently the same one, but seems to be localized to 4-5 different collections, I've also noticed that if I single-stepping through the process, if sometimes completes fine, which may indicate some race conditions somewhere.
> As I'm not entirely sure why the exception is being thrown, I'm not sure if this is a problem with Hibernate, or something wrong in our application somewhere. Is there anyway I can identify why a collection entry wouldn't have been processed (and what does "processed" actually mean?).
> 24.04.2009 15:57:33.180 *ERROR* [btpool0-1] org.hibernate.AssertionFailure an assertion failure occured (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session) org.hibernate.AssertionFailure: collection [smx3.schema.PartyRole.agreementsFrom] was not processed by flush()
> at org.hibernate.engine.CollectionEntry.postFlush(CollectionEntry.java:228)
> at org.hibernate.event.def.AbstractFlushingEventListener.postFlush(AbstractFlushingEventListener.java:356)
> at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
> at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1031)
> at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:369)
> at org.hibernate.transaction.CacheSynchronization.beforeCompletion(CacheSynchronization.java:88)
> at com.atomikos.icatch.jta.Sync2Sync.beforeCompletion(Sync2Sync.java:73)
> at com.atomikos.icatch.imp.TransactionStateHandler.commit(TransactionStateHandler.java:253)
> at com.atomikos.icatch.imp.CompositeTransactionImp.doCommit(CompositeTransactionImp.java:509)
> at com.atomikos.icatch.imp.CompositeTerminatorImp.commit(CompositeTerminatorImp.java:138)
> at com.atomikos.icatch.jta.TransactionImp.commit(TransactionImp.java:297)
> at com.atomikos.icatch.jta.TransactionManagerImp.commit(TransactionManagerImp.java:608)
> at com.atomikos.icatch.jta.UserTransactionManager.commit(UserTransactionManager.java:148)
> at smx3.envers.TransactionFilter.afterHandle(TransactionFilter.java:242)
> at org.restlet.Filter.handle(Filter.java:197)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at org.restlet.Filter.handle(Filter.java:195)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at org.restlet.Filter.handle(Filter.java:195)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at com.noelios.restlet.StatusFilter.doHandle(StatusFilter.java:130)
> at org.restlet.Filter.handle(Filter.java:195)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at org.restlet.Filter.handle(Filter.java:195)
> at com.noelios.restlet.ChainHelper.handle(ChainHelper.java:124)
> at com.noelios.restlet.application.ApplicationHelper.handle(ApplicationHelper.java:112)
> at org.restlet.Application.handle(Application.java:341)
> at org.restlet.ext.wadl.WadlApplication.handle(WadlApplication.java:705)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at org.restlet.Filter.handle(Filter.java:195)
> at org.restlet.Router.handle(Router.java:504)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at org.restlet.Filter.handle(Filter.java:195)
> at org.restlet.Router.handle(Router.java:504)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at org.restlet.Filter.handle(Filter.java:195)
> at com.noelios.restlet.ChainHelper.handle(ChainHelper.java:124)
> at org.restlet.Component.handle(Component.java:673)
> at org.restlet.Server.handle(Server.java:331)
> at com.noelios.restlet.ServerHelper.handle(ServerHelper.java:68)
> at com.noelios.restlet.http.HttpServerHelper.handle(HttpServerHelper.java:147)
> at com.noelios.restlet.ext.servlet.ServerServlet.service(ServerServlet.java:881)
> at nz.co.smx.rest.RestActivator$RestActivatorClassLoaderServlet.service(RestActivator.java:182)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
> at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
> at org.ops4j.pax.web.service.internal.HttpServiceServletHandler.handle(HttpServiceServletHandler.java:51)
> at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
> at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:722)
> at org.ops4j.pax.web.service.internal.HttpServiceContext.handle(HttpServiceContext.java:87)
> at org.ops4j.pax.web.service.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:63)
> at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
> at org.mortbay.jetty.Server.handle(Server.java:324)
> at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
> at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:842)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
> at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
> at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)
> 24.04.2009 15:57:33.183 *WARN* [btpool0-1] atomikos Unexpected error in beforeCompletion:
> org.hibernate.AssertionFailure: collection [smx3.schema.PartyRole.agreementsFrom] was not processed by flush()
> at org.hibernate.engine.CollectionEntry.postFlush(CollectionEntry.java:228)
> at org.hibernate.event.def.AbstractFlushingEventListener.postFlush(AbstractFlushingEventListener.java:356)
> at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
> at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1031)
> at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:369)
> at org.hibernate.transaction.CacheSynchronization.beforeCompletion(CacheSynchronization.java:88)
> at com.atomikos.icatch.jta.Sync2Sync.beforeCompletion(Sync2Sync.java:73)
> at com.atomikos.icatch.imp.TransactionStateHandler.commit(TransactionStateHandler.java:253)
> at com.atomikos.icatch.imp.CompositeTransactionImp.doCommit(CompositeTransactionImp.java:509)
> at com.atomikos.icatch.imp.CompositeTerminatorImp.commit(CompositeTerminatorImp.java:138)
> at com.atomikos.icatch.jta.TransactionImp.commit(TransactionImp.java:297)
> at com.atomikos.icatch.jta.TransactionManagerImp.commit(TransactionManagerImp.java:608)
> at com.atomikos.icatch.jta.UserTransactionManager.commit(UserTransactionManager.java:148)
> at smx3.envers.TransactionFilter.afterHandle(TransactionFilter.java:242)
> at org.restlet.Filter.handle(Filter.java:197)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at org.restlet.Filter.handle(Filter.java:195)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at org.restlet.Filter.handle(Filter.java:195)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at com.noelios.restlet.StatusFilter.doHandle(StatusFilter.java:130)
> at org.restlet.Filter.handle(Filter.java:195)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at org.restlet.Filter.handle(Filter.java:195)
> at com.noelios.restlet.ChainHelper.handle(ChainHelper.java:124)
> at com.noelios.restlet.application.ApplicationHelper.handle(ApplicationHelper.java:112)
> at org.restlet.Application.handle(Application.java:341)
> at org.restlet.ext.wadl.WadlApplication.handle(WadlApplication.java:705)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at org.restlet.Filter.handle(Filter.java:195)
> at org.restlet.Router.handle(Router.java:504)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at org.restlet.Filter.handle(Filter.java:195)
> at org.restlet.Router.handle(Router.java:504)
> at org.restlet.Filter.doHandle(Filter.java:150)
> at org.restlet.Filter.handle(Filter.java:195)
> at com.noelios.restlet.ChainHelper.handle(ChainHelper.java:124)
> at org.restlet.Component.handle(Component.java:673)
> at org.restlet.Server.handle(Server.java:331)
> at com.noelios.restlet.ServerHelper.handle(ServerHelper.java:68)
> at com.noelios.restlet.http.HttpServerHelper.handle(HttpServerHelper.java:147)
> at com.noelios.restlet.ext.servlet.ServerServlet.service(ServerServlet.java:881)
> at nz.co.smx.rest.RestActivator$RestActivatorClassLoaderServlet.service(RestActivator.java:182)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
> at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
> at org.ops4j.pax.web.service.internal.HttpServiceServletHandler.handle(HttpServiceServletHandler.java:51)
> at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
> at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:722)
> at org.ops4j.pax.web.service.internal.HttpServiceContext.handle(HttpServiceContext.java:87)
> at org.ops4j.pax.web.service.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:63)
> at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
> at org.mortbay.jetty.Server.handle(Server.java:324)
> at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
> at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:842)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
> at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
> at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)
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