Details
- 
    Bug 
- 
    Status: Closed (View Workflow)
- 
    Critical 
- 
    Resolution: Fixed
- 
    2.2.4, 2.2.5, 2.2.6
- 
    None
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    Amazon Linux
 Java 8
Description
We are connecting to an AWS Aurora RDS datasource using a connection string that looks like this:
jdbc:mariadb:aurora://XXXXX.cluster-XXXXX.eu-west-1.rds.amazonaws.com:3306/XXXXX?socketTimeout=0&useSSL=true&connectTimeout=31000
When calling getConnection(), we see this error message. It looks like there is a NullPointerException occuring somewhere within the driver code:
| java.lang.NullPointerException: null | 
| 	at org.mariadb.jdbc.internal.failover.AbstractMastersListener.throwFailoverMessage(AbstractMastersListener.java:506) | 
| 	at org.mariadb.jdbc.internal.failover.impl.MastersSlavesListener.checkInitialConnection(MastersSlavesListener.java:300) | 
| 	at org.mariadb.jdbc.internal.failover.impl.MastersSlavesListener.initializeConnection(MastersSlavesListener.java:169) | 
| 	at org.mariadb.jdbc.internal.failover.FailoverProxy.<init>(FailoverProxy.java:116) | 
| 	at org.mariadb.jdbc.internal.util.Utils.retrieveProxy(Utils.java:485) | 
| 	at org.mariadb.jdbc.MariaDbConnection.newConnection(MariaDbConnection.java:155) | 
| 	at org.mariadb.jdbc.MariaDbDataSource.getConnection(MariaDbDataSource.java:288)
 | 
We first saw this after upgrading to 2.2.5.