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<td class="page-title-pattern-first-line " style="padding: 0; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiODg4OWQyOGJlMDYzNDgwNWIxMmNkYWI2MDliMTgzMjYiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-14060?atlOrigin=eyJpIjoiODg4OWQyOGJlMDYzNDgwNWIxMmNkYWI2MDliMTgzMjYiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-219c9d03-4e9c-46e3-8eee-28ebf7beb70b" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-14060?atlOrigin=eyJpIjoiODg4OWQyOGJlMDYzNDgwNWIxMmNkYWI2MDliMTgzMjYiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">HHH-14060</a> </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="martin.panzer" style="color:#6c797f;; color: #3b73af; text-decoration: none" id="email_martin.panzer" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5ed8c2e6da1e4d0a9cef85c6"> Martin Panzer </a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <span class="diffcontext">**Describe the bug**<br>I am currently upgrading a project from hibernate 5.0.10 (wildfly 10), to hibernate 5.4.17 (quarkus).<br>The application itself works without any problems.<br>Test execution fails however on the new hibernate version.<br><br>I reduced the problem down to some strange session handling.<br>Inside "AbstractPersistentCollection.setCurrentSession", the sessions are not equal. The collection was created with the entitymanager (and therefore session) I use in my test, but the transaction commit happens with another session.<br><br></span> <span class="diffaddedchars" style="background-color:#ddfade;">Further testing showed, that this regression was introduced somewhere between hibernate 5.1.17 and 5.2.0.<br><br></span> <span class="diffcontext">I attached an minimal reproducer project, which has hibernate 5.</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">4</span> <span class="diffaddedchars" style="background-color:#ddfade;">2</span> <span class="diffcontext">.</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">17</span> <span class="diffaddedchars" style="background-color:#ddfade;">0</span> <span class="diffcontext"> as dependency.<br>You can relativly easily switch it to 5.</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">0</span> <span class="diffaddedchars" style="background-color:#ddfade;">1</span> <span class="diffcontext">.</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">10</span> <span class="diffaddedchars" style="background-color:#ddfade;">17</span> <span class="diffcontext">, where the tests execute correctly.<br><br>**Expected behavior**<br>No problems with test execution after the upgrade to hibernate 5.</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">4</span> <span class="diffaddedchars" style="background-color:#ddfade;">2</span> <span class="diffcontext">.</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">17</span> <span class="diffaddedchars" style="background-color:#ddfade;">0</span> <span class="diffcontext">.<br><br>**Actual behavior**<br>When I run my tests, I get the following exception. The test run is failed (red) in this case.<br><br>{code:java}</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"><br></span> <span class="diffcontext">Jun 04, 2020 12:20:49 PM org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation<br>INFO: HHH000204: Processing PersistenceUnitInfo [name: persistenceUnitExample]<br>Jun 04, 2020 12:20:49 PM org.hibernate.Version logVersion<br>INFO: HHH000412: Hibernate ORM core version 5.4.17.Final<br>Jun 04, 2020 12:20:49 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit><br>INFO: HCANN000001: Hibernate Commons Annotations {5.1.0.Final}<br>Jun 04, 2020 12:20:50 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure<br>WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)<br>Jun 04, 2020 12:20:50 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator<br>INFO: HHH10001005: using driver [null] at URL [jdbc:h2:mem:test]<br>Jun 04, 2020 12:20:50 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator<br>INFO: HHH10001001: Connection properties: {}<br>Jun 04, 2020 12:20:50 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator<br>INFO: HHH10001003: Autocommit mode: false<br>Jun 04, 2020 12:20:50 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections <init><br>INFO: HHH000115: Hibernate connection pool size: 20 (min=1)<br>Jun 04, 2020 12:20:50 PM org.hibernate.dialect.Dialect <init><br>INFO: HHH000400: Using dialect: org.hibernate.dialect.H2Dialect<br>Jun 04, 2020 12:20:50 PM org.hibernate.resource.beans.spi.ManagedBeanRegistryInitiator resolveBeanContainer<br>INFO: HHH10005002: No explicit CDI BeanManager reference was passed to Hibernate, but CDI is available on the Hibernate ClassLoader.<br>Jun 04, 2020 12:20:50 PM org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection<br>INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@3005db4a] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode.<br>Jun 04, 2020 12:20:50 PM org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection<br>INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@3013909b] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode.<br>Jun 04, 2020 12:20:50 PM org.hibernate.engine.transaction.jta.platform.internal.JtaPlatformInitiator initiateService<br>INFO: HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]<br>Jun 04, 2020 12:20:51 PM org.hibernate.collection.internal.AbstractPersistentCollection unsetSession<br>WARN: HHH000471: Cannot unset session in a collection because an unexpected session is defined. A persistent collection may only be associated with one session at a time. Collection : [<unreferenced>]<br>[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 2.642 s <<< FAILURE! - in org.acme.ExampleServiceTest<br>[ERROR] create Time elapsed: 0.666 s <<< ERROR!<br>javax.persistence.RollbackException: Error while committing the transaction<br> at org.acme.ExampleServiceTest.create(ExampleServiceTest.java:31)<br>Caused by: javax.persistence.PersistenceException: org.hibernate.HibernateException: Illegal attempt to associate a collection with two open sessions. Collection : [<unreferenced>]<br> at org.acme.ExampleServiceTest.create(ExampleServiceTest.java:31)<br>Caused by: org.hibernate.HibernateException: Illegal attempt to associate a collection with two open sessions. Collection : [<unreferenced>]<br> at org.acme.ExampleServiceTest.create(ExampleServiceTest.java:31)</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"><br><br></span> <span class="diffcontext">{code}<br><br></span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"><br><br></span> <span class="diffcontext">**To Reproduce**<br>Steps to reproduce the behavior:<br>1. Download the attached reproducer project<br>2. Run "mvn clean test"<br>3. Tests failed.<br>4. In the pom.xml, change the hibernate-orm.version to 5.</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">0</span> <span class="diffaddedchars" style="background-color:#ddfade;">1</span> <span class="diffcontext">.</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">10</span> <span class="diffaddedchars" style="background-color:#ddfade;">17</span> <span class="diffcontext">.Final, and add hibernate-entitymanager<br>5. Run "mvn clean test" again<br>6. No test error<br><br></span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"><br></span> <span class="diffcontext">**Environment (please complete the following information):**<br></span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"> -</span> <span class="diffaddedchars" style="background-color:#ddfade;"><br>*</span> <span class="diffcontext"> Output of `uname -a` or `ver`: <br>MSYS_NT-10.0 NANB7NLNVP2 2.10.0(0.325/5/3) 2018-06-13 23:34 x86_64 Msys<br></span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"> -</span> <span class="diffaddedchars" style="background-color:#ddfade;">*</span> <span class="diffcontext"> Build tool (ie. output of `mvnw --version` or `gradlew --version`): <br>Maven home: C:\</span> <span class="diffaddedchars" style="background-color:#ddfade;">\</span> <span class="diffcontext">eclipse\</span> <span class="diffaddedchars" style="background-color:#ddfade;">\</span> <span class="diffcontext">tools\</span> <span class="diffaddedchars" style="background-color:#ddfade;">\</span> <span class="diffcontext">apache-maven\</span> <span class="diffaddedchars" style="background-color:#ddfade;">\</span> <span class="diffcontext">bin\</span> <span class="diffaddedchars" style="background-color:#ddfade;">\</span> <span class="diffcontext">..<br>Java version: 1.8.0_181, vendor: Oracle Corporation, runtime: C:\</span> <span class="diffaddedchars" style="background-color:#ddfade;">\</span> <span class="diffcontext">Program Files\</span> <span class="diffaddedchars" style="background-color:#ddfade;">\</span> <span class="diffcontext">Java\</span> <span class="diffaddedchars" style="background-color:#ddfade;">\</span> <span class="diffcontext">jdk1.8.0_181\</span> <span class="diffaddedchars" style="background-color:#ddfade;">\</span> <span class="diffcontext">jre<br>Default locale: de_DE, platform encoding: Cp1252<br>OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"><br></span> </td>
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