Dear OPA Developers,
Need your help around one of the new features in OPA 10.4 which is Modules.
I have two rulebases A and B. While in rulebase A, I would like to be able to determine policy outcomes written in rulebase B. So I created a module out of rulebase B (select Build Module), opened project of rulebase A, and linked the .rmod output of rulebase B into rulebase A (Modules folder > Add Module Link..)
When I try to debug without screens, build is successful and I am able to investigate the rules in rulebase B from here. However when I debug with screens, build and run in ODS, or build and run in OWD, they all prompt a stack strace on the screen. The root cause of the exception is a “java.lang.OutOfMemoryError: Java heap space”
If I build these rulebases separately, it works fine and no errors. It only happens when one becomes the module of the other. How can this memory error be fixed? I am pasting the whole error message below hoping to help in investigation. (Sorry for the long text..)
Any help to make this work is appreciated. Thank you!
HTTP status 500
exception
- javax.servlet.ServletException: Servlet.init() for servlet WebDeterminationsServlet threw exception
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:879)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
java.lang.Thread.run(Unknown Source)
root cause
- java.lang.OutOfMemoryError: Java heap space
org.apache.xerces.dom.DeferredDocumentImpl.getNodeObject(Unknown Source)
org.apache.xerces.dom.DeferredElementNSImpl.synchronizeData(Unknown Source)
org.apache.xerces.dom.ElementNSImpl.getNamespaceURI(Unknown Source)
org.apache.xml.dtm.ref.dom2dtm.DOM2DTM.addNode(DOM2DTM.java:262)
org.apache.xml.dtm.ref.dom2dtm.DOM2DTM.nextNode(DOM2DTM.java:523)
org.apache.xml.dtm.ref.DTMDefaultBase._nextsib(DTMDefaultBase.java:565)
org.apache.xml.dtm.ref.DTMDefaultBase.getNextSibling(DTMDefaultBase.java:1142)
org.apache.xml.dtm.ref.DTMDefaultBaseTraversers$ChildTraverser.next(DTMDefaultBaseTraversers.java:463)
org.apache.xpath.axes.ChildTestIterator.getNextNode(ChildTestIterator.java:83)
org.apache.xpath.axes.BasicTestIterator.nextNode(BasicTestIterator.java:170)
org.apache.xpath.axes.NodeSequence.nextNode(NodeSequence.java:335)
org.apache.xpath.axes.NodeSequence.runTo(NodeSequence.java:494)
org.apache.xml.dtm.ref.DTMNodeList.<init>(DTMNodeList.java:81)
org.apache.xpath.objects.XNodeSet.nodelist(XNodeSet.java:346)
org.apache.xpath.jaxp.XPathImpl.getResultAsType(XPathImpl.java:329)
org.apache.xpath.jaxp.XPathImpl.evaluate(XPathImpl.java:282)
com.oracle.determinations.util.xml.dom.XmlElement.selectElements(XmlElement.java:89)
com.oracle.determinations.util.xml.dom.XmlElement.selectElements(XmlElement.java:81)
com.oracle.determinations.engine.local.modules.Module.loadDataModel(Module.java:295)
com.oracle.determinations.engine.local.modules.Module.<init>(Module.java:56)
com.oracle.determinations.engine.local.modules.ModuleLoader.loadChildModules(ModuleLoader.java:72)
com.oracle.determinations.engine.local.modules.ModuleLoader.loadModules(ModuleLoader.java:56)
com.oracle.determinations.engine.local.modules.ModuleLoader.createUnifiedRulebase(ModuleLoader.java:31)
com.oracle.determinations.engine.local.RulebaseLoader.createUnifiedRulebase(RulebaseLoader.java:141)
com.oracle.determinations.interview.engine.local.LocalRulebaseService.applyChangeSet(LocalRulebaseService.java:243)
com.oracle.determinations.interview.engine.plugins.rulebaseresolver.ClassloaderRulebaseResolverPlugin.initialise(ClassloaderRulebaseResolverPlugin.java:73)
com.oracle.determinations.interview.engine.local.LocalRulebaseService.<init>(LocalRulebaseService.java:53)
com.oracle.determinations.interview.engine.local.LocalInterviewEngine.initialise(LocalInterviewEngine.java:181)
com.oracle.determinations.interview.engine.local.LocalInterviewEngine.<init>(LocalInterviewEngine.java:66)
com.oracle.determinations.interview.engine.InterviewEngineFactory.createInstance(InterviewEngineFactory.java:19)
com.oracle.determinations.web.platform.servlet.WebDeterminationsServletContext.init(WebDeterminationsServletContext.java:180)
com.oracle.determinations.web.platform.servlet.WebDeterminationsServletContext.<init>(WebDeterminationsServletContext.java:116)