[jira] [Commented] (FLINK-2508) Confusing sharing of StreamExecutionEnvironment

["Márton Balassi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-2508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14693282#comment-14693282 ] 

Márton Balassi commented on FLINK-2508:
---------------------------------------

Thanks for spotting this, I think the purpose of having the current environment cached was to be able to set the `TestStreamEnvironment` as context, but the current state of the code seems a bit messy.

> 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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