[rules-users] problem with pesisted stateful knowledge session and Length Sliding Window

Hi all,   I am facing a problem with persisted stateful knowledge session, please help me. My rule is listed as below: package com.sample import com.sample.Event; import java.util.List; declare Event   @role(event) end rule "test"   when     $list : List() from collect(Event() over window: length(2))   then     System.out.println("----print out in rule, size of the list collected from window is:" + $list.size()); end   The problem is, when use a normal stateful session(created by the calling kbase.newStatefulKnowledgeSession()), *when a third fact inserted, the session working memory only retains list of 2, as expected.* when use a persisted stateful session(created by the calling JPAKnowledgeService.newStatefulKnowledgeSession()), insert 2 facts first. Then restore this session by JPAKnowledgeService.loadStatefulKnowledgeSession(), and *insert a third fact, the session working memory grows to list of 3?*   By the way, I am using version 5.2.0.Final. And after I upgrade to version 5.4.0.Final, the test result of persisted session becomes to normal.*The attachment is my test program and you can repeat it.*   I want to ask you if there is something missing that I need to do in 5.2.0.Final?   Thank you in advance, any help will be appreciated. http://drools.46999.n3.nabble.com/file/n4019766/drools-session-persis-dem... drools-session-persis-demo.zip -- View this message in context: http://drools.46999.n3.nabble.com/problem-with-pesisted-stateful-knowledg... Sent from the Drools: User forum mailing list archive at Nabble.com.