David Mollitor created TEZ-4321:
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Summary: Do Not Wrap Singleton Collections
Key: TEZ-4321
URL: https://issues.apache.org/jira/browse/TEZ-4321
Project: Apache Tez
Issue Type: Improvement
Reporter: David Mollitor
Assignee: David Mollitor
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-
{code:none}
public static <T> List<T> singletonList​(T o)
Returns an immutable list containing only the specified object.
{code}
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