buf.append(MemoryUtil.getMemoryUsageLog());
            buf.append(')');
            logger.info(buf.toString());
        }
        final long unprocessedDocumentSize = fessConfig.getIndexerUnprocessedDocumentSizeAsInteger().longValue();
        final IntervalControlHelper intervalControlHelper = ComponentUtil.getIntervalControlHelper();
        if (totalHits > unprocessedDocumentSize && intervalControlHelper.isCrawlerRunning()) {

     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     * @throws NumberFormatException When the property is not integer.
     */
    Integer getIndexerUnprocessedDocumentSizeAsInteger();

    /**
     * Get the value for the key 'indexer.click.count.enabled'. <br>
     * The value is, e.g. true <br>