[ARROW-6234] [Java] ListVector hashCode() is not correct

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.15.0
• Component/s: Java
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/22621
• Assignee: Ji Liu
• Reporter: Ji Liu
• Created: 14/Aug/19 13:16
• Updated: 11/Jan/23 07:45
• Resolved: 15/Aug/19 05:10

Description

Current implement is not correct:

for (int i = start; i < end; i++) {
  hash = 31 * vector.hashCode(i);
}

Should be something like:

hash = 31 * hash + vector.hashCode(i);

Issue Links

• links to: GitHub Pull Request #5082