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()) {