logger.debug("Delete elevateword. {} elevateword: {}", arraySettings.arraySettingsIndexName, elevateWord);
        }
        arraySettings.delete(ELEVATE_WORD_SETTINGD_KEY, elevateWord);
    }

    /**
     * Delete all elevate words.
     */
    public void deleteAll() {
        if (logger.isDebugEnabled()) {

                        } catch (final IOException ex) {
                            log.debug("Connection failed " + dr.getServer(), ex);
                            e = ex;
                            dr = dr.next();
                            continue;
                        }
                    }

                    log.debug("No server name in referral");
                    return null;

    boolean isInfoEnabled();

    void info(String message);

    void info(String message, Throwable t);

    boolean isDebugEnabled();

    void debug(String message);

    void debug(String message, Throwable t);

                System.getProperties().entrySet().stream().forEach(e -> logger.debug("Property: {}={}", e.getKey(), e.getValue()));
                System.getenv().entrySet().forEach(e -> logger.debug("Env: {}={}", e.getKey(), e.getValue()));
                logger.debug("Option: {}", options);
            } catch (final Exception e) {

            try {
                if (this.treeConnection != null) {
                    // Release the tree connection if possible
                    log.debug("Releasing tree connection during emergency cleanup");
                }
            } catch (Exception e) {
                log.debug("Error releasing tree connection during emergency cleanup", e);
            }

            // Note: resourceLoc is final, cannot be set to null

development.here = false

# The title of environment (e.g. local or integration or production)
environment.title = Production

# Does it enable the Framework internal debug? (true only when emergency)
framework.debug = false

# one day: 86400000, three days: 259200000, five days: 432000000, one week: 604800000, one year: 31556926000
# special script :: absolute mode: $(2014/07/10), relative mode: addDay(3).addMonth(4)

            if (cause != null && "VersionConflictEngineException".equals(cause.getClass().getSimpleName())) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to insert {}", urlQueue, e);
                }
                return;
            }
            throw e;
        }
    }

    /**

        // do nothing
    }

    /**
     * Initializes the helper.
     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initialize {}", this.getClass().getSimpleName());
        }
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        langFields = fessConfig.getIndexerLanguageFieldsAsArray();

        this.analyzer = analyzer;
        index = settings.getAsString(SuggestSettings.DefaultKeys.INDEX, StringUtil.EMPTY);
        this.threadPool = threadPool;

        if (logger.isDebugEnabled()) {
            logger.debug("Create suggester instance for {}", index);
        }
    }

    /**
     * Creates a new SuggestRequestBuilder for querying suggestions.
     * @return A SuggestRequestBuilder instance.
     */

        if (logger.isDebugEnabled()) {
            if (urlQueue != null && urlQueue.getUrl() != null) {
                logger.debug("{} is not a target url. ({})", urlQueue.getUrl(), threadCheckCount);
            } else {
                logger.debug("The url is null. ({})", threadCheckCount);
            }
        }
    }

    /**
     * Processes crawling exception log events.
     *