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https://issues.apache.org/jira/browse/GEODE-136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15547139#comment-15547139
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ASF GitHub Bot commented on GEODE-136:
--------------------------------------

GitHub user kjduling opened a pull request:

    https://github.com/apache/incubator-geode/pull/253

    GEODE-136: Fix possible NullPointerException in GetRegionsFunction

    Addresses an unlikely but possible NPE.
    Removes use of a deprecated interface.
    Introduces a missing unit test.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/kjduling/incubator-geode feature/GEODE-136

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/incubator-geode/pull/253.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #253
    
----
commit 99114411aae2e9238f1a1e8e115b1e494e78e000
Author: Kevin Duling <kdul...@pivotal.io>
Date:   2016-10-05T00:08:17Z

    GEODE-136: Fix possible NullPointerException in Gfsh's 'list regions' 
command's GetRegionsFunction.

----


> Fix possible NullPointerException in Gfsh's 'list regions' command's 
> GetRegionsFunction.
> ----------------------------------------------------------------------------------------
>
>                 Key: GEODE-136
>                 URL: https://issues.apache.org/jira/browse/GEODE-136
>             Project: Geode
>          Issue Type: Bug
>          Components: gfsh
>    Affects Versions: 1.0.0-incubating
>         Environment: GemFire Manager + Gfsh
>            Reporter: John Blum
>            Assignee: Kevin Duling
>              Labels: ApacheGeode, CLI, GFSH, GetRegionsFunction, list-regions
>             Fix For: 1.0.0-incubating
>
>
> The following line 
> ([#48|https://github.com/apache/incubator-geode/blob/develop/gemfire-core/src/main/java/com/gemstone/gemfire/management/internal/cli/functions/GetRegionsFunction.java#L48])
>  in the {{GetRegionsFunction}} class could possibly lead to a NPE if the 
> {{regions}} _Set_ is null since the {{regions.isEmpty()}} call proceeds the 
> {{regions == null}} check.
> Of course, one should argue whether {{Cache.rootRegions()}} should be 
> returning a null _Set_ at all rather than an empty _Set_ if there are in fact 
> no "root" _Regions_ in the Geode _Cache_.
> But then, one could also argue that this {{GetRegionsFunction}} should not be 
> returning a null "array" if there are no "root" _Regions_ in the Geode 
> _Cache_ either.  It too should be returning an "empty" array.



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