Kubernetes Submit Queue df97434e8a Merge pull request #43110 from caesarxuchao/fix-42952
Automatic merge from submit-queue (batch tested with PRs 43106, 43110)

Wait for garbagecollector to be synced in test

Fix #42952

Without the `cache.WaitForCacheSync` in the test, it's possible for the GC to get a merged event of RC's creation and its update (update to deletionTimestamp != 0), before GC gets the creation event of the pod, so it's possible the GC will handle the foreground deletion of the RC before it adds the Pod to the dependency graph, thus the race.

With the `cache.WaitForCacheSync` in the test, because GC runs a single thread to process graph changes, it's guaranteed the Pod will be added to the dependency graph before GC handles the foreground deletion of the RC.

Note that this pull fixes the race in the test. The race described in the first point of #26120 still exists.
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Kubernetes

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Kubernetes is an open source system for managing containerized applications across multiple hosts, providing basic mechanisms for deployment, maintenance, and scaling of applications.

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