[rules-users] KnowledgeAgentImpl memory leak (5.5.0.Final)

alineasol engineering at alineasol.com
Wed Mar 19 12:27:49 EDT 2014


Hello,

We have a  KnowledgeAgent with this configuration:
       * drools.resource.scanner.interval = 900
       * drools.agent.monitorChangeSetEvents = "true"
       * drools.agent.scanResources = "true"
       * drools.agent.scanDirectories = "true"
       * drools.agent.newInstance = "false"
       * drools.resource.urlcache = /path/cache

We have noticed a memory leak in the class KnowledgeAgentImpl when the
resources are down. The KnowledgeAgentImpl begins to reload from cache all
the resources every scanner interval they are not reachable. The
KnowledgeAgentImpl object increases its size every loop causing a Java Perm
Gen error.

We use:
       * drools release 5.5.0.Final
       * jdk1.6.0_45
       * apache tomcat 7.0.42


Any suggestion?

Thank you. 



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