8 Replies Latest reply on Sep 15, 2010 3:37 PM by girishadat

NPE for JMX @ CacheManager.stop()

girishadat Aug 30, 2010 10:57 AM

I am getting the following on calling CacheManager.stop().

Exception in thread "main" java.lang.NullPointerException
    at org.infinispan.jmx.AbstractJmxRegistration.getJmxDomain(AbstractJmxRegistration.java:73)
    at org.infinispan.jmx.CacheManagerJmxRegistration.updateDomain(CacheManagerJmxRegistration.java:65)
    at org.infinispan.jmx.CacheManagerJmxRegistration.buildRegistrar(CacheManagerJmxRegistration.java:59)
    at org.infinispan.jmx.AbstractJmxRegistration.unregisterMBeans(AbstractJmxRegistration.java:57)
    at org.infinispan.jmx.CacheManagerJmxRegistration.stop(CacheManagerJmxRegistration.java:51)
    at org.infinispan.manager.DefaultCacheManager.stop(DefaultCacheManager.java:534)
    at InfinispanTest.main(InfinispanTest.java:29)

My JMX configuration is as follows.

<globalJmxStatistics enabled="true" jmxDomain="infinispan"/>

What is wrong here, for a NPE?

1. Re: NPE for JMX @ CacheManager.stop()

mircea.markus Aug 31, 2010 5:41 AM (in response to girishadat)

What version are you using? Can you please write a UT to reproduce this?
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2. Re: NPE for JMX @ CacheManager.stop()

girishadat Sep 1, 2010 6:15 AM (in response to mircea.markus)

I am using Infinispan 4.0.0 Final.

It is easy to reproduce. Just call CacheManager.stop().

import org.infinispan.manager.CacheManager;
import org.infinispan.manager.DefaultCacheManager;

public class TestCase {

    public static void main(String[] args) throws Exception {

        CacheManager cacheManager = new DefaultCacheManager(TestCase.class.getClassLoader()
                .getResourceAsStream("config-samples/all.xml"), false);
        cacheManager.stop();
    }
}

Also, the NPE is not there when

<globalJmxStatistics enabled="false"  />

or if I am calling DefaultCacheManager's constructor with second argument as true.

new DefaultCacheManager("path to conf file", true);

Hope this helps.

3. Re: NPE for JMX @ CacheManager.stop()

galder.zamarreno Sep 7, 2010 12:25 PM (in response to girishadat)

Did you try with 4.1.0.Final and the all.xml shipped by this version?
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4. Re: NPE for JMX @ CacheManager.stop()

sannegrinovero Sep 7, 2010 1:14 PM (in response to girishadat)

yes this should be fixed in 4.1, I experienced it too and Galder had a very quick fix - so assuming this is the same issue you should be fine with 4.1.0.FINAL
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5. Re: NPE for JMX @ CacheManager.stop()

girishadat Sep 9, 2010 8:16 AM (in response to sannegrinovero)

Just checked it now and the problem is there with 4.1.0 Final as well...
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6. Re: NPE for JMX @ CacheManager.stop()

galder.zamarreno Sep 13, 2010 1:12 PM (in response to girishadat)

It's a bug: https://jira.jboss.org/browse/ISPN-644
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7. Re: NPE for JMX @ CacheManager.stop()

galder.zamarreno Sep 14, 2010 4:19 AM (in response to galder.zamarreno)

The issue is now solved. A fix for it should included in forthcoming 4.2.0.BETA1
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8. Re: NPE for JMX @ CacheManager.stop()

girishadat Sep 15, 2010 3:37 PM (in response to galder.zamarreno)

Thanks Galder. I'll do my part for testing once the fixed version is out.
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