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https://issues.apache.org/jira/browse/YUNIKORN-3431?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hedger Lai reassigned YUNIKORN-3431:
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Assignee: Hedger Lai
> Add regression test coverage for KubernetesShim scheduling loop shutdown
> ------------------------------------------------------------------------
>
> Key: YUNIKORN-3431
> URL: https://issues.apache.org/jira/browse/YUNIKORN-3431
> Project: Apache YuniKorn
> Issue Type: Test
> Reporter: Andy Huang
> Assignee: Hedger Lai
> Priority: Minor
>
> YUNIKORN-3367 changes KubernetesShim.Stop() from sending a single value on
> stopChan to closing the channel, so both wait.Until goroutines started by
> KubernetesShim.doScheduling() stop.
> The current unit tests verify that stopChan is closed and that Stop() is
> idempotent, but they do not start doScheduling() or verify that both
> scheduling-loop goroutines terminate. A regression to a buffered channel with
> a single send could still satisfy the current channel assertion while leaving
> one loop running.
> Add a regression test that:
> * starts KubernetesShim successfully with the mock scheduler, so both
> schedule and checkOutstandingApps loops are running;
> * calls Stop();
> * verifies that both loop goroutines terminate.
> Possible implementations:
> * use goleak.VerifyNone scoped to this test, after the shared goleak support
> from YUNIKORN-3357 is available; or
> * add a testable loop-completion signal/counter to KubernetesShim and wait
> for both goroutines to exit.
> The test should specifically protect against the original single-send
> shutdown failure.
> Related issues:
> * https://issues.apache.org/jira/browse/YUNIKORN-3367
> * [https://github.com/apache/yunikorn-k8shim/pull/1074]
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