[jira] [Created] (HDFS-13168) XmlImageVisitor - Prefer Array over LinkedList

["BELUGA BEHR (JIRA)" <ji...@apache.org>]

BELUGA BEHR created HDFS-13168:
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             Summary: XmlImageVisitor - Prefer Array over LinkedList
                 Key: HDFS-13168
                 URL: https://issues.apache.org/jira/browse/HDFS-13168
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: hdfs
    Affects Versions: 3.0.0
         Environment: {{ArrayDeque}}

{quote}This class is likely to be faster than Stack when used as a stack, and faster than LinkedList when used as a queue.{quote}

.. not to mention less memory fragmentation (single backing array v.s. many ArrayList nodes).

https://docs.oracle.com/javase/8/docs/api/java/util/ArrayDeque.html
            Reporter: BELUGA BEHR
         Attachments: HDFS-13168.1.patch





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