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From "Rakesh R (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2680) Correct DataNode.getChildren() inconsistent behaviour.
Date Wed, 08 Feb 2017 17:55:41 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15858309#comment-15858309

Rakesh R commented on ZOOKEEPER-2680:

Good catch [~arshad.mohammad] and thanks [~eribeiro] for the analysis. Presently {{MiniKdc}}
uses Apache Kerby which has a [build requirement of jdk1.7+|http://directory.apache.org/kerby/developer-guide.html].
Since branch-3.4.x support Java 1.6 or higher, Apache Kerby binding is causing trouble.

One solution is to rewrite {{MiniKdc}} test using old style of Kerberos implementation in
Apache Directory Server project, {{org.apache.directory.*}} packages. Please refer {{ivy.xml}}
file to understand the {{org.apache.directory.server}} dependencies in the [ZOOKEEPER-1045-br-3-4.patch|https://issues.apache.org/jira/secure/attachment/12805119/ZOOKEEPER-1045-br-3-4.patch#file-1],
which I had implemented initially.

> Correct DataNode.getChildren() inconsistent behaviour.
> ------------------------------------------------------
>                 Key: ZOOKEEPER-2680
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2680
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.4.9, 3.5.1
>            Reporter: Mohammad Arshad
>            Assignee: Mohammad Arshad
>             Fix For: 3.4.10, 3.5.3, 3.6.0
>         Attachments: ZOOKEEPER-2680-01.patch
> DataNode.getChildren() API returns null and empty set if there are no children in it
depending on when the API is called. DataNode.getChildren() API behavior should be changed
and it should always return empty set if the node does not have any child
> *DataNode.getChildren() API Current Behavior:*
> # returns null initially
> When DataNode is created and no children are added yet, DataNode.getChildren() returns
> # returns empty set after all the children are deleted:
> created a Node
> add a child
> delete the child
> DataNode.getChildren() returns empty set.
> After fix DataNode.getChildren() should return empty set in all the above cases.

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