*   Refactor kube-scheduler configuration ([#52428](https://github.com/kubernetes/kubernetes/pull/52428))

            log.error("Failed to create handle state directory: " + stateDirectory, e);
        }

        // Load persisted handles on startup
        loadPersistedHandles();

        // Schedule periodic persistence and cleanup
        scheduler.scheduleAtFixedRate(this::periodicMaintenance, 30, 30, TimeUnit.SECONDS);
    }

    /**
     * Request a new durable handle
     * @param path the file path
     * @param type the handle type

    }

    /**
     * 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.
     */

- Scheduler framework interface moved from pkg/scheduler/framework/v1alpha to pkg/scheduler/framework ([#95069](https://github.com/kubernetes/kubernetes/pull/95069), [@farah](https://github.com/farah)) [SIG Scheduling, Storage and Testing]

                                </la:link></c:if>
                                <c:if test="${editable}"><la:link styleClass="btn btn-success"
                                                                  href="/admin/scheduler/createnewjob/web_crawling/${f:u(id)}/${fe:base64(name)}">
                                    <i class="fa fa-plus-circle" aria-hidden="true"></i>

     */
    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.

| DI Container | Lasta Di |
| Data Access | DBFlute (type-safe ORM for OpenSearch) |
| Search Engine | OpenSearch |
| App Server | Embedded Tomcat |
| Crawler | fess-crawler library |
| Scheduler | Lasta Job |
| Logging | Log4j2 |
| Testing | JUnit 4/5, UTFlute, REST Assured |

## Development Commands

### Setup
```bash
mvn antrun:run          # Download OpenSearch plugins (required before first build)

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

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

        for (String fId : getFileConfigIds(NAME_PREFIX)) {
            deleteMethod("/api/admin/fileconfig/setting/" + fId);
        }

        deleteTestToken();
    }

- kube-scheduler

  - Migrate scheduler to use v1beta1 Event API. any tool targeting scheduler events needs to use v1beta1 Event API ([#78447](https://github.com/kubernetes/kubernetes/pull/78447), [@yastij](https://github.com/yastij))

- kubeadm

Kubernetes manages stateless Spark and Hive containers elastically on the compute nodes. Spark has native scheduler integration with Kubernetes. Hive, for legacy reasons, uses YARN scheduler on top of Kubernetes.