this.directoryCache = new ConcurrentHashMap<>();
        this.leaseToPath = new ConcurrentHashMap<>();
        this.scheduler = Executors.newScheduledThreadPool(1);
        this.changeNotifier = new DirectoryChangeNotifier(this);
        
        // Schedule periodic cache cleanup
        scheduler.scheduleAtFixedRate(this::cleanupExpiredEntries, 60, 60, TimeUnit.SECONDS);
    }
    

* 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

### Scheduling

    private final Path stateDirectory;
    private final ScheduledExecutorService scheduler;
    private final CIFSContext context;
    
    public PersistentHandleManager(CIFSContext context) {
        this.context = context;
        this.handles = new ConcurrentHashMap<>();
        this.guidToHandle = new ConcurrentHashMap<>();
        this.scheduler = Executors.newScheduledThreadPool(1);
        

    }

    /**
     * Gets a scheduled job by its ID.
     * @param id The ID of the scheduled job.
     * @return An optional entity of the scheduled job.
     */
    public OptionalEntity<ScheduledJob> getScheduledJob(final String id) {
        return scheduledJobBhv.selectByPK(id);
    }

    /**
     * Deletes a scheduled job.
     * @param scheduledJob The scheduled job to delete.
     */

- 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....

                                <c:if test="${editable}"><la:link styleClass="btn btn-success"
                                                                  href="/admin/scheduler/createnewjob/web_crawling/${f:u(id)}/${fe:base64(name)}">
                                    <em class="fa fa-plus-circle">
                                    <la:message key="labels.web_crawling_button_create_job"/>

- 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.

     */
    public String scriptType;

    /**
     * Whether the scheduled job is a crawler job.
     */
    public String crawler;

    /**
     * Whether logging is enabled for the scheduled job.
     */
    public String jobLogging;

    /**
     * Whether the scheduled job is available.
     */
    public String available;

    /**
     * Sort order of the scheduled job.

- 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))