[jira] [Created] (YARN-505) NPE at AsyncDispatcher$GenericEventHandler

["Przemyslaw Pretki (JIRA)" <ji...@apache.org>]

Przemyslaw Pretki created YARN-505:
--------------------------------------

             Summary: NPE at AsyncDispatcher$GenericEventHandler
                 Key: YARN-505
                 URL: https://issues.apache.org/jira/browse/YARN-505
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: resourcemanager
    Affects Versions: 3.0.0
            Reporter: Przemyslaw Pretki
            Priority: Minor


Steps to reproduce:
{code}
@Test
public void testAsyncDispatcher() 
{
    AsyncDispatcher dispatcher = new AsyncDispatcher();
    EventHandler handler = dispatcher.getEventHandler();
    handler.handle(null);
}
{code}
Moreover, event taken from *BlockingQueue* will never be *null*, so that it seems that the following condition is not necessary (AsyncDispatcher.createThread() method): 
{code}
if (event != null) {
    dispatch(event);
}
{code}

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