[jboss-jira] [JBoss JIRA] (DROOLS-263) Possible memory leak insliding temporal windows

[Davide Sottara (JIRA)]

Davide Sottara created DROOLS-263:
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             Summary: Possible memory leak insliding  temporal windows
                 Key: DROOLS-263
                 URL: https://issues.jboss.org/browse/DROOLS-263
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 5.5.0.Final
            Reporter: Davide Sottara
            Assignee: Mark Proctor
            Priority: Blocker


When an event is asserted and a temporal window is present, it will be cached in the window's memory and then propagated (usually to an accumulate) by a propagationQuquingNode.
If the even expires before it participates in a tuple (in a multi-threading environment), the WM retraction will not reach the window node due to the lack of tuples. BUT,  it will set the fact handle's ID to -1
When the fact is considered for expiration from the sliding window, its changed ID will 1) disrupt the local event queue and 2) prevent it from being removed from the node memory.
Memory leaks and NPEs will arise randomly

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