logger.warn("Could not add document: url field is missing or null");
                return;
            }

            final String url = dataMap.get(fessConfig.getIndexFieldUrl()).toString();
            final CrawlerClient client = crawlerClientFactory.getClient(url);
            if (client == null) {

            if (disniProvider.isAvailable()) {
                return disniProvider;
            }
            log.warn("DiSNI RDMA provider requested but not available");
            break;

        case "tcp":
            return new TcpRdmaProvider();

        default:
            log.warn("Unknown RDMA provider preference: {}", preference);
            break;
        }

        return null;
    }

    /**

     * Processes the job.
     * @param runtime The job runtime.
     */
    protected void process(final LaJobRuntime runtime) {
        if (!runtime.getParameterMap().containsKey(Constants.SCHEDULED_JOB)) {
            logger.warn("Scheduled job is empty: key={}", Constants.SCHEDULED_JOB);
            return;
        }
        runtime.stopIfNeeds();

        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();

                    }
                } catch (final Exception e) {
                    logger.warn("Failed to read a suggest bad word: {}", list, e);
                }
            }
            searchEngineClient.refresh("_all"); // TODO replace _all
        } catch (final IOException e) {
            logger.warn("Failed to read a suggest bad word.", e);
        }
    }

    /**

        // Check for null bytes
        if (NULL_BYTE.matcher(path).find()) {
            log.warn("Path contains null bytes: {}", sanitizeForLog(path));
            throw new SmbException("Path contains null bytes");
        }

        // Check for control characters
        if (strictMode && CONTROL_CHARS.matcher(path).find()) {
            log.warn("Path contains control characters: {}", sanitizeForLog(path));

            if (logger.isDebugEnabled()) {
                logger.debug("Added URL to queue: url={}, sessionId={}", url, crawlerContext.sessionId);
            }
        } catch (final Exception e) {
            logger.warn("Failed to add URL to crawling queue: url={}, sessionId={}", url, crawlerContext.sessionId, e);
        }
        urlFilter.processUrl(url);
    }

    /**
     * Returns the current session ID.

                    entity.getBoost(), false);
        } catch (final Exception e) {
            logger.warn("Failed to process a request.", e);
            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateCrudTable(GLOBAL, buildThrowableMessage(e)));
        }

    @Override
    public void setRootLoggerLevel(Level level) {
        LOGGER.warn("setRootLoggerLevel: operation not supported");
    }

    @Override
    public void activate() {
        LOGGER.warn("activate(): operation not supported");
    }

            LOGGER.warn("");
            LOGGER.warn("Some problems were encountered while building the effective settings");

            for (SettingsProblem problem : settingsResult.getProblems()) {
                LOGGER.warn("{} @ {}", problem.getMessage(), problem.getLocation());
            }
            LOGGER.warn("");
        }
    }

                                if (tempFile.exists() && !tempFile.delete()) {
                                    logger.warn("Failed to delete {}", tempFile.getAbsolutePath());
                                }
                            }
                        });
            } catch (final Exception e) {
                logger.warn("Failed to process request file: {}", form.requestFile.getFileName(), e);