Connection leak when there is an exception during getConnection for NoTransaction resource adapter -------------------------------------------------------------------------------------------------- Key: JBJCA-1398 URL: https://issues.redhat.com/browse/JBJCA-1398 Project: IronJacamar Issue Type: Bug Components: Core Affects Versions: 1.0.31.Final, 1.0.38.Final, 1.4.10 Reporter: Stephen Fikes Assignee: Stefano Maestri Priority: Major Labels: downstream_dependency When an exception occurs with a {{NoTransaction}} resource adapter during a {{getConnection}} attempt the pool leaks the connection. The exception (simulating a timeout of the underlying connect attempt) detail is below. {code} ... WARNING [support.jboss.ejb.session.SessionBean] (ServerService Thread Pool -- 51) Failed to get a connection: IJ000456: Unchecked throwable in ManagedConnection.getConnection() cl=org.jboss.jca.core.connectionmanager.listener.NoTxConnectionListener@1a933f80[state=NORMAL managed connection=support.redhat.jboss.jca.ManagedConnectionImpl@7a294431 connection handles=0 lastUse=1575419355891 trackByTx=false pool=org.jboss.jca.core.connectionmanager.pool.strategy.OnePool@1d6a5362 pool internal context=SemaphoreArrayListManagedConnectionPool@2f47607f[pool=EisConnectionFactory]]: javax.resource.ResourceException: IJ000456: Unchecked throwable in ManagedConnection.getConnection() cl=org.jboss.jca.core.connectionmanager.listener.NoTxConnectionListener@1a933f80[state=NORMAL managed connection=support.redhat.jboss.jca.ManagedConnectionImpl@7a294431 connection handles=0 lastUse=1575419355891 trackByTx=false pool=org.jboss.jca.core.connectionmanager.pool.strategy.OnePool@1d6a5362 pool internal context=SemaphoreArrayListManagedConnectionPool@2f47607f[pool=EisConnectionFactory]] at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:521) at support.redhat.jboss.jca.ConnectionFactoryImpl.getConnection(ConnectionFactoryImpl.java:61) ... Caused by: javax.resource.ResourceException: Simulate timeout at support.redhat.jboss.jca.ManagedConnectionImpl.getConnection(ManagedConnectionImpl.java:61) at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:508) ... {code} There seems to be a difference in a {{NoTransaction}} and an {{XATransaction}} adapter where {{returnConnection}} is triggered by the {{TxConnectionManagerImpl}}. {code} ... [BMAN] org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreArrayListManagedConnectionPool.returnConnection(SemaphoreArrayListManagedConnectionPool.java:-1) ... org.jboss.jca.core.connectionmanager.pool.AbstractPool.returnConnection(AbstractPool.java:633) ... org.jboss.jca.core.connectionmanager.AbstractConnectionManager.returnManagedConnection(AbstractConnectionManager.java:456) ... org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.managedConnectionDisconnected(TxConnectionManagerImpl.java:515) ... org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:525) {code} For a {{NoTransaction}} adapter, however, the abstract implementation is used: {code} ... [BMAN] org.jboss.jca.core.connectionmanager.AbstractConnectionManager.managedConnectionDisconnected(AbstractConnectionManager.java:697) ... org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:525) {code} The empty implementation for [AbstractConnectionManager.managedConnectionDisconnected|https://github.co...] does nothing so the connection is not returned as it would be for a transactional implementation. I also see the same issue with IronJacamar 1.4.18.Final so this issue remains in the latest release.