Andy Goldstein 3a87bfb6f7 PLEG: reinspect pods that failed prior inspections ...

Fix the following sequence of events:

1. relist call 1 successfully inspects a pod (just has infra container)
1. relist call 2 gets an error inspecting the same pod (has infra container and a transient
container that failed to create) and doesn't update the old/new pod records
1. relist calls 3+ don't inspect the pod any more (just has infra container so it doesn't look like
anything changed)

This change adds a new list that keeps track of pods that failed inspection and retries them the
next time relist is called. Without this change, a pod in this state would never be inspected again,
its entry in the status cache would never be updated, and the pod worker would never call syncPod
again because the most recent entry in the status cache has an error associated with it. Without
this change, pods in this state would be stuck Terminating forever, unless the user issued a
deletion with a grace period value of 0.

2016-05-03 11:06:35 -04:00

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