[GEARPUMP-286] Different WindowAndGroups could end up in one due to hashCode collision

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8.2
• Fix Version/s: 0.8.3
• Component/s: streaming
• Assignee: Manu Zhang
• Reporter: Manu Zhang
• Created: 28/Feb/17 00:54
• Updated: 28/Feb/17 03:06
• Resolved: 28/Feb/17 03:06

Description

Currently, we use a TreeMap to store and sort WindowAndGroup, which requires WindowAndGroup to be Comparable. However, Group is not and not supposed to be so I hacked with its hashCode for comparison. That is wrong since two Group could have identical hashCode.

Issue Links

• links to: GitHub Pull Request #164