Bug 874119
| Summary: | NPE during execution of SlidingTimeWindow$BehaviorExpireWMAction with fireUntilHalt() | ||||||
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| Product: | [JBoss] JBoss Enterprise BRMS Platform 5 | Reporter: | Marek Winkler <mwinkler> | ||||
| Component: | BRE (Expert, Fusion) | Assignee: | Nobody <nobody> | ||||
| Status: | CLOSED UPSTREAM | QA Contact: | |||||
| Severity: | urgent | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | BRMS 5.3.1 | ||||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | All | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2025-02-10 03:21:05 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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Pull request with reproducer test case: https://github.com/droolsjbpm/drools/pull/162 This product has been discontinued or is no longer tracked in Red Hat Bugzilla. |
Created attachment 640113 [details] NPE complete stacktrace. Description of problem: When a StatefulKnowledgeSession.fireUntilHalt() is running in thread A, and thread B inserts a moderate volume of events into a time window, a NPE occurs in SlidingTimeWindowComparator.compare. Version-Release number of selected component (if applicable): 5.3.1 How reproducible: Will attach link to pull request with test case. Steps to Reproduce: 1. Run org.drools.integrationtests.FireUntilHaltTimeWindowTest Actual results: NPE shows up (see attachment for the complete stack trace). Expected results: The events are processed by the engine without an exception. Additional info: Looks like synchronization issue when events expire from a time window and another event is concurrently being inserted into the window. This bug actually prevents using sliding time windows when running in fireUntilHalt() mode.