throw new FessSystemException("Failed to resolve the hostname: " + host, e);
        }
    }

    /**
     * Initializes the search engine client and configures indices.
     * Called automatically after dependency injection is complete.
     */
    @PostConstruct
    public void open() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initializing {}", this.getClass().getSimpleName());

* Add "kubectl --overwrite" flag to automatically resolve conflicts between the modified and live configuration using values from the modified configuration. ([#26136](https://github.com/kubernetes/kubernetes/pull/26136), [@AdoHe](https://github.com/AdoHe))

* Since `kubernetes.tar.gz` no longer includes client or server binaries, `cluster/kube-{up,down,push}.sh` now automatically download released binaries if they are missing. ([#38730](https://github.com/kubernetes/kubernetes/pull/38730), [@ixdy](https://github.com/ixdy))

- Graduated the `PodTopologyLabelsAdmission` feature gate to Beta and enabled it by default.
  Pods now receive `topology.kubernetes.io/zone` and `topology.kubernetes.io/region` labels automatically when their assigned Node has these labels. ([#135158](https://github.com/kubernetes/kubernetes/pull/135158), [@andrewsykim](https://github.com/andrewsykim))

    ReferenceEntry<K, V> nullEntry = nullEntry();
    nulled.setNextInWriteQueue(nullEntry);
    nulled.setPreviousInWriteQueue(nullEntry);
  }

  /**
   * Notifies listeners that an entry has been automatically removed due to expiration, eviction, or
   * eligibility for garbage collection. This should be called every time expireEntries or
   * evictEntry is called (once the lock is released).
   */