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https://issues.apache.org/jira/browse/FLINK-2508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14693474#comment-14693474
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Maximilian Michels commented on FLINK-2508:
-------------------------------------------

Just like in {{ExecutionEnvironment}} we can have static variable which holds a 
factory. Setting the factory, we can change the default environment returned 
for tests, local, or cluster execution.

That would also remove the clutter in the {{getExecutionEnvironment()}} method.

> Confusing sharing of StreamExecutionEnvironment
> -----------------------------------------------
>
>                 Key: FLINK-2508
>                 URL: https://issues.apache.org/jira/browse/FLINK-2508
>             Project: Flink
>          Issue Type: Bug
>          Components: Streaming
>    Affects Versions: 0.10
>            Reporter: Stephan Ewen
>             Fix For: 0.10
>
>
> In the {{StreamExecutionEnvironment}}, the environment is once created and 
> then shared with a static variable to all successive calls to 
> {{getExecutionEnvironment()}}. But it can be overridden by calls to 
> {{createLocalEnvironment()}} and {{createRemoteEnvironment()}}.
> This seems a bit un-intuitive, and probably creates confusion when 
> dispatching multiple streaming jobs from within the same JVM.
> Why is it even necessary to cache the "current" execution environment?



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