[ARROW-6335] [Java] Improve the performance of DictionaryHashTable

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 0.15.0
• Component/s: Java
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/22713
• Assignee: Liya Fan
• Reporter: Liya Fan
• Created: 23/Aug/19 12:33
• Updated: 11/Jan/23 07:46
• Resolved: 26/Aug/19 04:01

Description

when comparing two entries in the dictionary hash table, it is more efficient to compare the index directly, rather than using Objects.equals, because they are both ints.

Issue Links

• links to: GitHub Pull Request #5178