[
https://issues.apache.org/jira/browse/DERBY-4306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12734644#action_12734644
]
Mamta A. Satoor commented on DERBY-4306:
----------------------------------------
Checked in the fix with revision 797147. The checkin notes were as follows
********************
DERBY-4306
registeredMbeans is null but we do not check for nullability before executing
following
if (registeredMbeans.remove(mbeanName) == null)
which resulted in NPE.
I have fixed the problem by checking for nullability first. registeredMbeans
will be null if someone shuts down the engine first and then later on issues a
command to shutdown the server. During the shutdown, registeredMbeans will be
null and we should check for that nullability before accessing it.
********************
> 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: 10.5.2.0, 10.6.0.0
> 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.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
