[TASK][EASY] Fix flaky test BatchesV2ResourceSuite

[yaooqinn]

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Skill requirements

• Scala

Background and Goals

BatchesV2ResourceSuite:
- open batch session
- open batch session with uploading resource *** FAILED ***
  The code passed to eventually never returned normally. Attempted 35 times over 5.016062152 seconds. Last failure message: Array(/home/runner/work/kyuubi/kyuubi/kyuubi-server/target/work/upload/spark-examples_2.12-3.1.3-20231025183320-3.jar) was not empty. (BatchesResourceSuite.scala:308)

Implementation steps

• fix test
• pass the ci

Additional context

No response

[weixi62961]

@yaooqinn Could you please assign it to me? suppose to complete it on 29th October cc @bowenliang123

[weixi62961]

Let's update the status of the task, any advice is welcome. @yaooqinn @bowenliang123

It seems that the test case was failed randomly in CI.

1. It was passed in my local machine.
2. It was passed in CI run, e.g. run 6624136416
3. But it was failed in CI run, e.g. run 6623039619

[yaooqinn]

Hi @weixi62961 yes, it's randomly failures, so we call it flaky test

[davidyuan1223]

Let's update the status of the task, any advice is welcome. @yaooqinn @bowenliang123

It seems that the test case was failed randomly in CI.

1. It was passed in my local machine.
2. It was passed in CI run, e.g. run 6624136416
3. But it was failed in CI run, e.g. run 6623039619

for this issue, it's mean there have a random failures, we need find the random failure reasons, there are some suggest

1. some configuration may make the test case failed
2. try to debug and analysis why the example-xxx.jar not empty, the main reason may is the delete not complete there are samilar issue #5600 , wish it can help you