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From "Mamta A. Satoor (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4306) NullPointerException in JMXManagementService.unregisterMBean when running jdbcapi._Suite
Date Thu, 23 Jul 2009 16:59:14 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12734641#action_12734641

Mamta A. Satoor commented on DERBY-4306:

I ran derbyall again, once without my changes and once again with my changes and both the
times, I didn't see the errors that I mentioned on 22/Jul/09. So I will assume that those
were intermittent failures and go ahead and checkin the fix which fixes NPE by first checking
for nullability.

> NullPointerException in JMXManagementService.unregisterMBean when running jdbcapi._Suite
> ----------------------------------------------------------------------------------------
>                 Key: DERBY-4306
>                 URL: https://issues.apache.org/jira/browse/DERBY-4306
>             Project: Derby
>          Issue Type: Bug
>          Components: JMX
>    Affects Versions:,
>            Reporter: Tiago R. Espinha
>         Attachments: DERBY4306_checkForNullability_patch1_diff.txt, JMX_NPE_AuthenticationTest.tar.gz,
JMXNPE.tar.gz, ReproDerby4306.java
> I consistently get a NullPointerException when I run the jdbcapi suite:
> java.lang.NullPointerException
> 	at org.apache.derby.impl.services.jmx.JMXManagementService.unregisterMBean(JMXManagementService.java:286)
> 	at org.apache.derby.impl.services.jmx.JMXManagementService.unregisterMBean(JMXManagementService.java:277)
> 	at org.apache.derby.impl.drda.NetworkServerControlImpl.blockingStart(NetworkServerControlImpl.java:864)
> 	at sun.reflect.GeneratedMethodAccessor41.invoke(Unknown Source)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.derby.iapi.jdbc.DRDAServerStarter.run(DRDAServerStarter.java:236)
> 	at java.lang.Thread.run(Thread.java:619)
> I'm attaching the log folder from the jdbcapi run.

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