[TEZ-4321] Do Not Wrap Singleton Collections

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.9.3, 0.10.2
• Assignee: David Mollitor
• Reporter: David Mollitor
• Created: 27/Jul/21 16:00
• Updated: 09/Aug/21 20:45
• Resolved: 09/Aug/21 20:45

Description

Singleton Collections are by their design immutable. There is no need to wrap them in an unmodifiableCollection.

https://docs.oracle.com/javase/9/docs/api/java/util/Collections.html#singletonList-T-

public static <T> List<T> singletonList​(T o)
Returns an immutable list containing only the specified object.

Issue Links

• links to: GitHub Pull Request #138