gaborgsomogyi edited a comment on issue #27789: [SPARK-30541][TEST] testRetry 
flaky KafkaDelegationTokenSuite
URL: https://github.com/apache/spark/pull/27789#issuecomment-594524053
 
 
   I'm not against the approach but I've couple of questions before we go on:
   * Could you reproduce it somehow on your local environment (or any 
environment where not all the tests run to spare time)? I've tried it to run it 
for weeks but it has never failed. I would like to understand what causes the 
issue but since I was not able to find any code glitch + not able to reproduce 
it's hard.
   * Which part of the test failed exactly? I'm asking it because at least 2 
parts can fail: `beforeAll` and the test itself. I think this won't solve 
SPARK-30541 since it's failing in the `beforeAll`...
   * Have you checked this code?
   ```
     /**
      * Note: this method doesn't support `BeforeAndAfter`. You must use 
`BeforeAndAfterEach` to
      * set up and tear down resources.
      */
     def testRetry(s: String, n: Int = 2)(body: => Unit): Unit = {
   ```
   

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