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fixup: address comments
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Huang-Wei committed Apr 13, 2023
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Expand Up @@ -52,24 +52,18 @@ equivalent to "Predicate" and "Scoring" is equivalent to "Priority function".
One plugin may register at multiple extension points to perform more complex or
stateful tasks.

{{< figure src="/images/docs/scheduling-framework-extensions.png" title="scheduling framework extension points" class="diagram-large">}}
{{< figure src="/images/docs/scheduling-framework-extensions.png" title="Scheduling framework extension points" class="diagram-large">}}

### PreEnqueue {#pre-enqueue}

These plugins are called prior to adding Pods to the internal active queue, where Pods are marked as
ready for scheduling.

Only when all PreEnqueue plugins return `Success`, the Pod is allowed to enter the active queue.
Otherwise, it's placed in the internal unschedulable Pods list.
Otherwise, it's placed in the internal unschedulable Pods list, and doesn't get an `Unschedulable` condition.

{{< note >}}

More details about how internal scheduler queues work, please check this
[document](https://github.com/kubernetes/community/blob/master/contributors/devel/sig-scheduling/scheduler_queues.md).

{{< /note >}}

> Check more details
For more details about how internal scheduler queues work, read
[Scheduling queue in kube-scheduler](https://github.com/kubernetes/community/blob/f03b6d5692bd979f07dd472e7b6836b2dad0fd9b/contributors/devel/sig-scheduling/scheduler_queues.md).

### QueueSort {#queue-sort}

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