/**
     * Shutdown the directory lease manager
     */
    public void shutdown() {
        scheduler.shutdown();
        try {
            if (!scheduler.awaitTermination(5, TimeUnit.SECONDS)) {
                scheduler.shutdownNow();
            }
        } catch (InterruptedException e) {
            scheduler.shutdownNow();
            Thread.currentThread().interrupt();
        }

            thresholdAdjustmentTask.cancel(false);
        }
        if (scheduler != null) {
            scheduler.shutdown();
        }
        log.info("[{}] Circuit breaker closed and resources cleaned up", name);
    }

    private void startDynamicThresholdAdjustment() {
        thresholdAdjustmentTask = scheduler.scheduleWithFixedDelay(this::performDynamicThresholdAdjustment, 30, 30, TimeUnit.SECONDS);

        for (Map<String, Object> elem : crawlingInfoList) {
            deleteMethod("/api/admin/crawlinginfo/log/" + elem.get("id"));
        }

        // Clean up schedulers
        for (String sId : getSchedulerIds(NAME_PREFIX)) {
            deleteMethod("/api/admin/scheduler/setting/" + sId);
        }

        // Clean up web configs
        for (String wId : getWebConfigIds(NAME_PREFIX)) {

* Default scheduler code is moved out of the plugin directory. ([#57852](https://github.com/kubernetes/kubernetes/pull/57852), [@misterikkit](https://github.com/misterikkit))
    * plugin/pkg/scheduler -> pkg/scheduler
    * plugin/cmd/kube-scheduler -> cmd/kube-scheduler

- Kube-apiserver: the componentstatus API is deprecated. This API provided status of etcd, kube-scheduler, and kube-controller-manager components, but only worked when those components were local to the API server, and when kube-scheduler and kube-controller-manager exposed unsecured health endpoints. Instead of this API, etcd health is included in the kube-apiserver health check and kube-scheduler/kube-controller-manager health checks can be made directly against those components' health endpoints....

- Performance of the inter-pod affinity/anti-affinity feature is improved over 100X via algorithmic optimization.
- DaemonSet pods, which used to be scheduled by the DaemonSet controller, will be scheduled by the default scheduler in 1.12. This change allows DaemonSet pods to enjoy all the scheduling features of the default scheduler.

    /**
     * Default constructor.
     */
    public ChatSessionManager() {
        // Default constructor
    }

    /**
     * Initializes the session manager and starts the cleanup scheduler.
     */
    @PostConstruct
    public void init() {
        // 5 minutes = 300 seconds
        cleanupTask = TimeoutManager.getInstance().addTimeoutTarget(this::cleanupExpiredSessions, 300, true);

        checkMethodBase(requestBody).delete("/api/admin/searchlist/query");
        refresh();

        for (String sId : getSchedulerIds(NAME_PREFIX)) {
            deleteMethod("/api/admin/scheduler/setting/" + sId);
        }

        for (String wId : getWebConfigIds(NAME_PREFIX)) {
            deleteMethod("/api/admin/webconfig/setting/" + wId);
        }

        deleteTestToken();
    }

- Fixed a scheduler panic due to internal cache inconsistency ([#71063](https://github.com/kubernetes/kubernetes/pull/71063), [@Huang-Wei](https://github.com/Huang-Wei))
- Report kube-scheduler unhealthy if leader election is deadlocked. ([#71085](https://github.com/kubernetes/kubernetes/pull/71085), [@bsalamat](https://github.com/bsalamat))

cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-scheduler) | [amd64](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-scheduler-amd64), [arm](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-scheduler-arm), [arm64](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-scheduler-arm64), [ppc64le](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-scheduler-ppc64le), [s390x](https://console.cloud.google.com/gcr...