Turn off all Hadoop logs?

[Frank Astier]

Is it possible to turn off all the Hadoop logs simultaneously? In my unit 
tests, I don’t want to see the myriad “INFO” logs spewed out by various Hadoop 
components. I’m using:

  ((Log4JLogger) DataNode.LOG).getLogger().setLevel(Level.OFF);
    ((Log4JLogger) LeaseManager.LOG).getLogger().setLevel(Level.OFF);
    ((Log4JLogger) FSNamesystem.LOG).getLogger().setLevel(Level.OFF);
    ((Log4JLogger) DFSClient.LOG).getLogger().setLevel(Level.OFF);
    ((Log4JLogger) Storage.LOG).getLogger().setLevel(Level.OFF);

But I’m still missing some loggers...

Frank