crawlerList.add(crawler);
            crawlerStatusList.add(Constants.READY);
        }

        // run index update
        final IndexUpdater indexUpdater = ComponentUtil.getIndexUpdater();
        indexUpdater.setName("IndexUpdater");
        indexUpdater.setPriority(indexUpdaterPriority);
        indexUpdater.setSessionIdList(sessionIdList);
        indexUpdater.setDaemon(true);

        return getComponent(FILE_TYPE_HELPER);
    }

    /**
     * Gets the index updater component.
     * @return The index updater.
     */
    public static IndexUpdater getIndexUpdater() {
        return getComponent(INDEX_UPDATER);
    }

    /**
     * Gets the key match helper component.
     * @return The key match helper.
     */