Fix MiniKubeTest.testJobCancelled

[coderzc]

Purpose of the PR

• close #213

Main Changes

Trying to fix MiniKubeTest.testJobCancelled

Verifying these changes

• [ ] Trivial rework / code cleanup without any test coverage. (No Need)
• [x] Already covered by existing tests, such as (please modify tests here).

• [ ] Need tests and can be verified as follows.

Does this PR potentially affect the following parts?

• [x] Nope
• [ ] Dependencies (add/update license info)
• [ ] Modify configurations
• [ ] The public API
• [ ] Other affects (typed here)

Documentation Status

• [ ] Doc - TODO
• [ ] Doc - Done
• [x] Doc - No Need

[codecov[bot]]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (ff85e34) 85.03% compared to head (f0393ce) 85.12%. Report is 3 commits behind head on master.

:exclamation: Current head f0393ce differs from pull request most recent head 01eb1aa. Consider uploading reports for the commit 01eb1aa to get more accurate results

Files	Patch %	Lines
...egraph/computer/algorithm/sampling/RandomWalk.java	92.06%	2 Missing and 3 partials :warning:
...computer/algorithm/sampling/RandomWalkMessage.java	94.11%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #287 +/- ## ============================================ + Coverage 85.03% 85.12% +0.08% - Complexity 3246 3280 +34 ============================================ Files 345 349 +4 Lines 12298 12406 +108 Branches 1102 1113 +11 ============================================ + Hits 10458 10560 +102 - Misses 1315 1316 +1 - Partials 525 530 +5 ```

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