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                                &nbsp;
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                                <table class="page-title-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> 
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                                        <td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HHH" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-9810" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-811d40ff-b0e3-4334-9175-d21830cac075" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-9810" style="color: #3b73af; text-decoration: none">HHH-9810</a> 
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                                            Issue Type:
                                        </th> 
                                        <td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-static-bug-811d40ff-b0e3-4334-9175-d21830cac075" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /> Bug 
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                                            Assignee:
                                        </th> 
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                                             Unassigned 
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                                        <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">
                                            Components:
                                        </th> 
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                                             hibernate-core 
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                                            Created:
                                        </th> 
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                                             21/May/2015 10:29 AM 
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                                            Priority:
                                        </th> 
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                                            Reporter:
                                        </th> 
                                        <td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="tbecker" id="email_tbecker" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=tbecker" style="color:#6c797f;; color: #3b73af; text-decoration: none">Thomas Becker</a> 
                                        </td> 
                                    </tr> 
                                </table> 
                            </td> 
                        </tr> 
                        <tr> 
                            <td class="email-content-main mobile-expand  issue-description-container" style="padding: 0px; border-collapse: collapse; border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #fff; padding-top: 5px; padding-bottom: 10px"> 
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                                            <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I'm getting a ConcurrentModificationException:</p> 
                                            <div class="code panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
                                                <div class="codeContent panelContent" style="padding: 9px 12px"> 
                                                    <pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
Caused by: javax.transaction.RollbackException: ARJUNA016053: Could not commit transaction.
        at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1212) [narayana-jts-idlj-5.0.4.Final.
jar:5.0.4.Final (revision: b4060)]
        at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:126) [narayana-jts-idlj-5.0.4.Final.jar:5.0.4.Final (r
evision: b4060)]
        at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.commit(BaseTransactionManagerDelegate.java:75)
        at org.jboss.as.ejb3.tx.CMTTxInterceptor.endTransaction(CMTTxInterceptor.java:91) [wildfly-ejb3-9.0.0.CR1.jar:9.0.0.CR1]
        ... 111 more
Caused by: javax.persistence.PersistenceException: error during managed flush
        at org.hibernate.jpa.spi.AbstractEntityManagerImpl$CallbackExceptionMapperImpl.mapManagedFlushFailure(AbstractEntityManagerImpl.java:1887) [hibernate-en
titymanager-4.3.9.Final.jar:4.3.9.Final]
        at org.hibernate.engine.transaction.synchronization.internal.SynchronizationCallbackCoordinatorNonTrackingImpl.beforeCompletion(SynchronizationCallbackC
oordinatorNonTrackingImpl.java:119) [hibernate-core-4.3.9.Final.jar:4.3.9.Final]
        at org.hibernate.engine.transaction.synchronization.internal.RegisteredSynchronization.beforeCompletion(RegisteredSynchronization.java:50) [hibernate-co
re-4.3.9.Final.jar:4.3.9.Final]
        at org.jboss.as.txn.service.internal.tsr.JCAOrderedLastSynchronizationList.beforeCompletion(JCAOrderedLastSynchronizationList.java:116)
        at com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.beforeCompletion(SynchronizationImple.java:76) [narayana-jts-idlj-5.0.4.Final.j
ar:5.0.4.Final (revision: b4060)]
        at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.beforeCompletion(TwoPhaseCoordinator.java:371) [narayana-jts-idlj-5.0.4.Final.jar:5.0.4.Final (
revision: b4060)]
        at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.end(TwoPhaseCoordinator.java:91) [narayana-jts-idlj-5.0.4.Final.jar:5.0.4.Final (revision: b406
0)]
        at com.arjuna.ats.arjuna.AtomicAction.commit(AtomicAction.java:162) [narayana-jts-idlj-5.0.4.Final.jar:5.0.4.Final (revision: b4060)]
        at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1200) [narayana-jts-idlj-5.0.4.Final.
jar:5.0.4.Final (revision: b4060)]
        ... 114 more
Caused by: java.util.ConcurrentModificationException
        at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) [rt.jar:1.8.0_45]
        at java.util.ArrayList$Itr.next(ArrayList.java:851) [rt.jar:1.8.0_45]
        at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1042) [rt.jar:1.8.0_45]
        at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:463) [hibernate-core-4.3.9.Final.jar:4.3.9.Final]
        at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:351) [hibernate-core-4.3.9.Final.jar:4.3.9.Final]
        at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:350) [hibernate-core-4.3.9.Final.jar:
4.3.9.Final]
        at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:56) [hibernate-core-4.3.9.Final.jar:4.3.9.Final]
        at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1258) [hibernate-core-4.3.9.Final.jar:4.3.9.Final]
        at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:425) [hibernate-core-4.3.9.Final.jar:4.3.9.Final]
        at org.hibernate.engine.transaction.synchronization.internal.SynchronizationCallbackCoordinatorNonTrackingImpl.beforeCompletion(SynchronizationCallbackC
oordinatorNonTrackingImpl.java:114) [hibernate-core-4.3.9.Final.jar:4.3.9.Final]
        ... 121 more
</pre> 
                                                </div>
                                            </div> 
                                            <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">That happens when I've a post-persist entity-listener defined like so:</p> 
                                            <div class="code panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
                                                <div class="codeContent panelContent" style="padding: 9px 12px"> 
                                                    <pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
    &lt;entity class=<span class="code-quote" style="color: #009100">&quot;somepackage.db.entities.SomeEntity&quot;</span>&gt;
        &lt;entity-listeners&gt;
            &lt;entity-listener class=<span class="code-quote" style="color: #009100">&quot;somepackage.ejb.jpa.SomeEntityListener&quot;</span>&gt;
                &lt;post-persist method-name=<span class="code-quote" style="color: #009100">&quot;onPrePersist&quot;</span>/&gt;
                &lt;post-update method-name=<span class="code-quote" style="color: #009100">&quot;onPrePersist&quot;</span>/&gt;
            &lt;/entity-listener&gt;
        &lt;/entity-listeners&gt;
    &lt;/entity&gt;
</pre> 
                                                </div>
                                            </div> 
                                            <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">And inside that EntityListener I create a new (different Entity) and persist it. AutoFlushMode is AUTO. I don't see why this shouldn't be possible?!</p> 
                                            <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I'd try to get a simplified test case running for you, but I can't import the hibernate-orm package into intellij. I even tried a fix via vi, but I couldn't get the gradle to build the 4.3 branch:</p> 
                                            <div class="code panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
                                                <div class="codeContent panelContent" style="padding: 9px 12px"> 
                                                    <pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">  script '/Users/tbecker/Documents/workspaces/hibernate-orm/source-generation.gradle': 16: unable to resolve class org.gradle.api.internal.tasks.compile.DelegatingJavaCompiler
   @ line 16, column 1.
     <span class="code-keyword" style="color: #000091">import</span> org.gradle.api.internal.tasks.compile.DelegatingJavaCompiler
</pre> 
                                                </div>
                                            </div> 
                                            <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Tried jdk1.7 and 1.8 without success on osx. Will give it another try tomorrow maybe.</p> 
                                        </td> 
                                    </tr> 
                                </table> 
                            </td> 
                        </tr> 
                        <tr> 
                            <td class="email-content-main mobile-expand " style="padding: 0px; border-collapse: collapse; border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #fff"> 
                                <table id="actions-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 1px"> 
                                    <tr> 
                                        <td id="actions-pattern-container" valign="middle" style="padding: 0px; border-collapse: collapse; padding: 10px 0 10px 24px; vertical-align: middle; padding-left: 0"> 
                                            <table align="left" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> 
                                                <tr> 
                                                    <td class="actions-pattern-action-icon-container" style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 0px; vertical-align: middle"> <a href="https://hibernate.atlassian.net/browse/HHH-9810#add-comment" target="_blank" title="Add Comment" style="color: #3b73af; text-decoration: none"> <img class="actions-pattern-action-icon-image" src="cid:jira-generated-image-static-comment-icon-2a7e3a34-9c74-491b-afb2-49c5f12af873" alt="Add Comment" title="Add Comment" height="16" width="16" border="0" style="vertical-align: middle" /> </a> 
                                                    </td> 
                                                    <td class="actions-pattern-action-text-container" style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 4px; padding-left: 5px"> <a href="https://hibernate.atlassian.net/browse/HHH-9810#add-comment" target="_blank" title="Add Comment" style="color: #3b73af; text-decoration: none">Add Comment</a> 
                                                    </td> 
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                                            </table> 
                                        </td> 
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                                </table> 
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                        <!-- there needs to be content in the cell for it to render in some clients --> 
                        <tr> 
                            <td class="email-content-rounded-bottom mobile-expand" style="padding: 0px; border-collapse: collapse; color: #fff; padding: 0 15px 0 16px; height: 5px; line-height: 5px; background-color: #fff; border-top: 0; border-left: 1px solid #ccc; border-bottom: 1px solid #ccc; border-right: 1px solid #ccc; border-bottom-right-radius: 5px; border-bottom-left-radius: 5px; mso-line-height-rule: exactly">
                                &nbsp;
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                <td id="footer-pattern" style="padding: 0px; border-collapse: collapse; padding: 12px 20px"> 
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                            <td id="footer-pattern-text" class="mobile-resize-text" width="100%" style="padding: 0px; border-collapse: collapse; color: #999; font-size: 12px; line-height: 18px; font-family: Arial, sans-serif; mso-line-height-rule: exactly; mso-text-raise: 2px">
                                 This message was sent by Atlassian JIRA <span id="footer-build-information">(v6.5-OD-03-002#65000-<span title="b8f65f822a3fd2ca02be441f51a3c335a581ff1e" data-commit-id="b8f65f822a3fd2ca02be441f51a3c335a581ff1e}">sha1:b8f65f8</span>)</span> 
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                            <td id="footer-pattern-logo-desktop-container" valign="top" style="padding: 0px; border-collapse: collapse; padding-left: 20px; vertical-align: top"> 
                                <table style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> 
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                                        <td id="footer-pattern-logo-desktop-padding" style="padding: 0px; border-collapse: collapse; padding-top: 3px"> <img id="footer-pattern-logo-desktop" src="cid:jira-generated-image-static-footer-desktop-logo-d4d79ed7-4b4d-4adb-a3f9-6c23f816ebd5" alt="Atlassian logo" title="Atlassian logo" width="169" height="36" class="image_fix" /> 
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