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Posted to issues@tez.apache.org by "Jonathan Turner Eagles (Jira)" <ji...@apache.org> on 2021/08/09 20:46:00 UTC
[jira] [Resolved] (TEZ-4321) Do Not Wrap Singleton Collections
[ https://issues.apache.org/jira/browse/TEZ-4321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Turner Eagles resolved TEZ-4321.
-----------------------------------------
Fix Version/s: 0.10.2
0.9.3
Resolution: Fixed
Thanks, [~belugabehr]. Simple straight-forward improvement.
> 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
> Priority: Minor
> Fix For: 0.9.3, 0.10.2
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> 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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