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https://issues.apache.org/jira/browse/FLINK-6397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16000903#comment-16000903
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ASF GitHub Bot commented on FLINK-6397:
---------------------------------------

Github user zentol commented on a diff in the pull request:

    https://github.com/apache/flink/pull/3810#discussion_r115274563
  
    --- Diff: 
flink-test-utils-parent/flink-test-utils/src/main/java/org/apache/flink/test/util/MultipleProgramsTestBase.java
 ---
    @@ -97,6 +105,12 @@ public MultipleProgramsTestBase(TestExecutionMode mode) 
{
                }
        }
     
    +   @After
    +   public void teardownEnvironment() {
    +           TestEnvironment.unsetAsContext();
    --- End diff --
    
    you could add another switch here, instead of calling both methods every 
time.


> MultipleProgramsTestBase does not reset ContextEnvironment
> ----------------------------------------------------------
>
>                 Key: FLINK-6397
>                 URL: https://issues.apache.org/jira/browse/FLINK-6397
>             Project: Flink
>          Issue Type: Bug
>          Components: Tests
>    Affects Versions: 1.3.0, 1.4.0
>            Reporter: Chesnay Schepler
>            Assignee: Biao Liu
>            Priority: Critical
>
> The MultipleProgramsTestBase sets a new TestEnvironment as a context 
> environment but never explicitly unsets it, which can result subsequent tests 
> categorically failing.
> The CustomDistributionITCase doesn't unset the context either; and some 
> streaming test that i haven't quite nailed down yet.



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