- An xa-datasource connection pool is configured with: statistic-enabled=true, validate-on-match=true
- When validation failed, after the failure, the following is logged:
2016-02-10 12:23:12,580 WARN [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (Sched1_Worker-13) IJ000621: Destroying connection that could not be validated: null
- This appears to come from SemaphoreConcurrentLinkedDequeManagedConnectionPool.java, line 436:
log.destroyingConnectionNotValidated(clw.getConnectionListener());
- So apparently clw.getConnectionListener() is null at this point, causing line 441/442 to throw NPE, if statistics is enabled:
pool.getInternalStatistics().deltaTotalPoolTime(lastUsed - clw.getConnectionListener().getLastReturnedTime());
- NPE is caught by the catch clause, and line 456 write the following to the log:
2016-02-10 12:23:12,580 WARN [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (Sched1_Worker-13) IJ000613: Throwable while trying to match managed connection, destroying connection: null: java.lang.NullPointerException at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.getConnection(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:441) at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getTransactionNewConnection(AbstractPool.java:708) at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getConnection(AbstractPool.java:607) at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:590) at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.getManagedConnection(TxConnectionManagerImpl.java:429) at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:747)
- However, this catch clause try to do the same thing that cause the NPE in line 461/462
pool.getInternalStatistics().deltaTotalPoolTime(lastUsed - clw.getConnectionListener().getLastReturnedTime());
- And finally this NPE is throw all the way out to the user of the connection
- clones
-
JBJCA-1310 NPE when validating database connection (and the validation failed) if connection pool statistics is enabled
-
- Closed
-
- is incorporated by
-
JBEAP-3538 WildFly/IronJacamar 1.3.3.Final
-
- Closed
-
