Erik Holstad commented on ZOOKEEPER-472:

@ Patrik , well good thing you cannot take me in the ear and sit me down :) 
Might want to change the instructions on 
http://wiki.apache.org/hadoop/ZooKeeper/HowToContribute though, to not make 
people confused? Remember taking a look there when I started and saw the code.


> Making DataNode not instantiate a HashMap when the node is ephmeral
> -------------------------------------------------------------------
>                 Key: ZOOKEEPER-472
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-472
>             Project: Zookeeper
>          Issue Type: Improvement
>          Components: server
>    Affects Versions: 3.1.1, 3.2.0
>            Reporter: Erik Holstad
>            Assignee: Erik Holstad
>            Priority: Minor
>             Fix For: 3.3.0
>         Attachments: zookeeper-472-v2.patch, zookeeper-472.patch
> Looking at the code, there is an overhead of a HashSet object for that nodes 
> children, even though the node might be an ephmeral node and cannot have 
> children.

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