[jira] [Assigned] (KYLIN-3095) Use ArrayDeque instead of LinkedList for queue implementation

[" Kaige Liu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KYLIN-3095?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

 Kaige Liu reassigned KYLIN-3095:
---------------------------------

    Assignee:  Kaige Liu

> Use ArrayDeque instead of LinkedList for queue implementation
> -------------------------------------------------------------
>
>                 Key: KYLIN-3095
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3095
>             Project: Kylin
>          Issue Type: Improvement
>            Reporter: Ted Yu
>            Assignee:  Kaige Liu
>            Priority: Minor
>
> Use ArrayDeque instead of LinkedList for queue implementation where thread safety is not needed.
> https://docs.oracle.com/javase/8/docs/api/index.html?java/util/ArrayDeque.html
> {quote}
> Resizable-array implementation of the Deque interface. Array deques have no capacity restrictions; they grow as necessary to support usage. They are not thread-safe; in the absence of external synchronization, they do not support concurrent access by multiple threads. Null elements are prohibited. This class is likely to be faster than Stack when used as a stack, and *faster than LinkedList when used as a queue.*
> {quote}



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