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From "BELUGA BEHR (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HIVE-18344) Remove LinkedList from SharedWorkOptimizer.java
Date Wed, 14 Mar 2018 15:25:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-18344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16398743#comment-16398743
] 

BELUGA BEHR edited comment on HIVE-18344 at 3/14/18 3:24 PM:
-------------------------------------------------------------

Yes, the class has changed so my first patch.  I have updated the patch to use ArrayList in
the remaining places.  It's still a tad advantageous to use ArrayList here for memory consumption
and performance.

https://stackoverflow.com/questions/8069370/is-an-arraylist-or-a-linkedlist-better-for-sorting


was (Author: belugabehr):
https://stackoverflow.com/questions/8069370/is-an-arraylist-or-a-linkedlist-better-for-sorting

> Remove LinkedList from SharedWorkOptimizer.java
> -----------------------------------------------
>
>                 Key: HIVE-18344
>                 URL: https://issues.apache.org/jira/browse/HIVE-18344
>             Project: Hive
>          Issue Type: Improvement
>          Components: HiveServer2
>    Affects Versions: 3.0.0
>            Reporter: BELUGA BEHR
>            Assignee: BELUGA BEHR
>            Priority: Trivial
>         Attachments: HIVE-18344.1.patch, HIVE-18344.2.patch
>
>
> Prefer {{ArrayList}} over {{LinkedList}} especially in this class because the initial
size of the collection is known.



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