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From "Marcel Reutegger (JIRA)" <j...@apache.org>
Subject [jira] Created: (JCR-625) Memory is not freed up when jackrabbit-server war is redeployed in tomcat
Date Tue, 07 Nov 2006 10:08:52 GMT
Memory is not freed up when jackrabbit-server war is redeployed in tomcat
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                 Key: JCR-625
                 URL: http://issues.apache.org/jira/browse/JCR-625
             Project: Jackrabbit
          Issue Type: Bug
         Environment: No released version is affected, only trunk: svn revision 471800.
            Reporter: Marcel Reutegger
            Priority: Minor


This bug was introduced with the new CacheManager feature. See JCR-619.

The CacheManager starts a new background thread which optimizes memory distribution every
second accross the various caches. When a jackrabbit repository is shutdown, this background
thread is still running and prevents the GC from collecting the classloader when jackrabbit
is deployed in a web application.

Steps to reproduce:
1) build jackrabbit and jcr-server from trunk and deploy into a tomcat
2) touch the web.xml file of the jcr-server web app (this will force a redeployment)

After step 2 two things may happen. Either:
- The memory consumption increases because the CacheManager thread is not shutdown
or
- The CacheManager thread dies unexpectedly with a NullPointerException:

Exception in thread "org.apache.jackrabbit.core.state.CacheManager" java.lang.NullPointerException
        at org.apache.jackrabbit.core.state.CacheManager.run(CacheManager.java:90)
        at java.lang.Thread.run(Unknown Source)

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