With SemaphoreConcurrentLinkedQueueManagedConnectionPool, if creating a new connection fails with exception, logging this

log.throwableWhileAttemptingGetNewGonnection(clw.getConnectionListener(), t);

https://github.com/ironjacamar/ironjacamar/blob/1.0/core/src/main/java/org/jboss/jca/core/connectionmanager/pool/mcp/SemaphoreConcurrentLinkedQueueManagedConnectionPool.java#L398

causes NPE since clw == null. This way, the NPE is eventually swallowed on https://github.com/ironjacamar/ironjacamar/blob/1.0/core/src/main/java/org/jboss/jca/core/connectionmanager/pool/mcp/SemaphoreConcurrentLinkedQueueManagedConnectionPool.java#L437 and only generic ResourceException (without much info) is thrown.