[DRILL-2124] Make MaterializedField#hashCode compute a hashcode by structure and not by reference

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Assignee: Hanifi Gunes
• Reporter: Hanifi Gunes
• Created: 30/Jan/15 01:04
• Updated: 12/Feb/15 21:47
• Resolved: 12/Feb/15 21:47

Description

MaterializedField#hashCode relies on Set#hashCode that is by reference sums up child#hashCode that may collide. We should ensure hashCode yields the same value given another field with the same structure.