[COLLECTIONS-661] Intermittent test failures in Windows for HashSetValuedHashMap

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.1
• Fix Version/s: 4.2
• Component/s: Map
• Assignee: Bruno P. Kinoshita
• Reporter: Bruno P. Kinoshita
• Created: 03/Oct/17 09:54
• Updated: 12/Oct/17 06:31
• Resolved: 12/Oct/17 06:31

Description

The collection HashSetValuedHashMap was added in 4.1. On Windows, test failures are not so common on JVM 8. But on Linux they are harder to happen (but still do [1], [2]).

When using Windows and JVM 8, running tests on Eclipse, or Maven fail. But debugging on Windows with Eclipse sometimes work. Indicating it may be due to a concurrency issue, where debugging adds some extra time hiding the real issue.

I have a few ideas of where/why it could be happening, but am without a Windows box for a few days as I'm travelling. I'm reading the codebase in the meantime, but if anybody feels like working on it, feel free to chime in and suggest a fix/patch.

[1] https://travis-ci.org/apache/commons-collections/jobs/282169803
[2] http://markmail.org/thread/exwm7ggjtxzbtlkd

Issue Links

• links to: GitHub Pull Request #28