I am getting the following Exception with JBossCache eviction policy of a tree
cache with the following entry in xml file.
attribute name="EvictionPolicyConfig" <config
30</attribute <region name="/_default_"
1</attribute
1000</attribute
</region
<region name="/a/b/"
100</attribut
attribute name="timeToLiveSeconds">300</attribute
</region
</config
</attribute
The Exception is
java.lang.NullPointerException
at org.jboss.cache.eviction.LRUPolicy.cacheStopped(LRUPolicy.java:206)
at org.jboss.cache.TreeCache.notifyCacheStopped(TreeCache.java:3484)
at org.jboss.cache.TreeCache.stopService(TreeCache.java:1466)
at com.jpmorgan.gcrm.servlets.CacheServlet.doGet(CacheServlet.java:53)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:971)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:402)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305)
at
weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6350)
at
weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317)
at
weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
at
weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3635)
at
weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2585)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
If I change the attribute name="timeToLiveSeconds">300</attribute
to attribute name="timeToIdleSeconds">300</attribute, I am not getting any
Exception. What was the Difference? Can any one clarrify?
And also how to turn ON/OFF the cache programmatically?
Venkat
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