logger.error("IndexUpdater is terminated.", e);
            } else if (logger.isInfoEnabled()) {
                logger.info("IndexUpdater is terminated.");
            }
            forceStop();
        } catch (final Throwable t) {
            if (ComponentUtil.available()) {
                logger.error("IndexUpdater is terminated.", t);
            } else if (logger.isDebugEnabled()) {

        }

        // run index update
        final IndexUpdater indexUpdater = ComponentUtil.getIndexUpdater();
        indexUpdater.setName("IndexUpdater");
        indexUpdater.setPriority(indexUpdaterPriority);
        indexUpdater.setSessionIdList(sessionIdList);
        indexUpdater.setDaemon(true);
        indexUpdater.setCrawlerList(crawlerList);
        getAvailableBoostDocumentRuleList().forEach(rule -> {

			<arg>"5:00"</arg>
			<arg>"10:00"</arg>
			<arg>"2,3,4,5,6"</arg>
			<arg>3600000</arg>
		</postConstruct>
		 -->
	</component>
	<component name="indexUpdater" class="org.codelibs.fess.indexer.IndexUpdater"
		instance="prototype">
		<!--
		<property name="maxDocumentCacheSize">5</property>
		<property name="unprocessedDocumentSize">100</property>
		<property name="threadDump">false</property>

    private static final String DATA_SERVICE = "dataService";

    private static final String MESSAGE_MANAGER = "messageManager";

    private static final String INDEX_UPDATER = "indexUpdater";

    private static final String FILE_TYPE_HELPER = "fileTypeHelper";

    private static final String EXTRACTOR_FACTORY = "extractorFactory";