if ("adaptive".equalsIgnoreCase(value)) {
            if (fessConfig.availableProcessors() >= 4) {
                return null;
            }
            final String requestsPerSecond = String.valueOf(fessConfig.getIndexReindexSizeAsInteger() * fessConfig.availableProcessors());
            logger.info("Set requests_per_second to {}", requestsPerSecond);
            return requestsPerSecond;

                            + "'. Value must be positive.");
                }

                int procs = Runtime.getRuntime().availableProcessors();
                int threads = (int) (coreMultiplier * procs);
                return threads == 0 ? 1 : threads;
            } else {
                int threads = Integer.parseInt(threadConfiguration);

                            + "'. Value must be positive.");
                }

                int procs = Runtime.getRuntime().availableProcessors();
                int threads = (int) (coreMultiplier * procs);
                return threads == 0 ? 1 : threads;
            } else {
                int threads = Integer.parseInt(threadConfiguration);