Erik Holstad commented on ZOOKEEPER-472:

Not really sure what to do about the no test -1. It is kinda hard to include 
new test for something like this and make it portable in a good way. 
Since I'm not adding any new functionality, the old tests should be enough, or 
what is the general opinion on this matter?


> 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.patch, zookeeper-472.patch, 
> zookeeper-472.patch, zookeeper-472.patch, zookeeper-472.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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