[jira] [Created] (SAMZA-1176) Make TestJoinOperator unit tests safe for concurrent execution

["Prateek Maheshwari (JIRA)" <ji...@apache.org>]

Prateek Maheshwari created SAMZA-1176:
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             Summary: Make TestJoinOperator unit tests safe for concurrent execution
                 Key: SAMZA-1176
                 URL: https://issues.apache.org/jira/browse/SAMZA-1176
             Project: Samza
          Issue Type: Bug
    Affects Versions: 0.13.0
            Reporter: Prateek Maheshwari
            Assignee: Prateek Maheshwari
             Fix For: 0.13.0


There are occasional failures like the following:
```joinRetainsMatchedMessagesReverse FAILED
    java.lang.AssertionError: expected:<0> but was:<110>
        at org.junit.Assert.fail(Assert.java:91)
        at org.junit.Assert.failNotEquals(Assert.java:645)
        at org.junit.Assert.assertEquals(Assert.java:126)
        at org.junit.Assert.assertEquals(Assert.java:470)
        at org.junit.Assert.assertEquals(Assert.java:454)
        at org.apache.samza.operators.TestJoinOperator.joinRetainsMatchedMessagesReverse(TestJoinOperator.java:174)```

These are presumably due to concurrent JUnit test execution. This ticket is to isolate these test cases so that they can be run concurrently.




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