* {@code tryLock()} methods will result in the execution of the {@link Policy} specified when
 * creating the factory. The currently available policies are:
 *
 * <ul>
 *   <li>DISABLED
 *   <li>WARN
 *   <li>THROW
 * </ul>
 *
 * <p>The locks created by a factory instance will detect lock acquisition cycles with locks created

                    trans.ensureConnected();
                    refServerName = trans.getRemoteHostName();
                }
                catch ( IOException e ) {
                    log.warn("Failed to connect to domain controller", e);
                }
                dr = getReferral(tf, trans, domain, domain, refServerName, root, null);
            }
        }

        if ( log.isTraceEnabled() ) {

        final long maxSearchDocSize = fessConfig.getIndexerMaxSearchDocSizeAsInteger().longValue();
        final boolean exceeded = numFound > maxSearchDocSize;
        if (exceeded) {
            logger.warn("Max document size is exceeded({}>{}): {}", numFound, fessConfig.getIndexerMaxSearchDocSize(), queryBuilder);
        }

        if (numFound > fessConfig.getIndexerMaxResultWindowSizeAsInteger().longValue()) {

                && this.server.encryptionKeyLength != 8 && ctx.getConfig().getLanManCompatibility() == 0 ) {
            log.warn("Unexpected encryption key length: " + this.server.encryptionKeyLength);
            return false;
        }

                        artifact.addMetadata(new SnapshotArtifactRepositoryMetadata(artifact, snapshot));
                    } catch (NumberFormatException e) {
                        logger.warn("Invalid artifact version " + artifact.getVersion() + ": " + e.getMessage());
                    }
                }
            }
        }
    }

    public ArtifactResolutionResult resolveTransitively(

                    } catch (final Exception e) {
                        logger.warn("Failed to install {}", filename, e);
                    } finally {
                        if (tempFile.exists() && !tempFile.delete()) {
                            logger.warn("Failed to delete {}.", tempFile.getAbsolutePath());
                        }
                    }
                }).start();

                logger.warn("Could not add a doc. Invalid data: {}", dataMap);
                return;
            }

            final String url = dataMap.get(fessConfig.getIndexFieldUrl()).toString();
            final CrawlerClient client = crawlerClientFactory.getClient(url);
            if (client == null) {
                logger.warn("CrawlerClient is null. Data: {}", dataMap);

        scheduledJobService.getScheduledJob(id).ifPresent(entity -> {
            try {
                entity.stop();
            } catch (final Exception e) {
                logger.warn("Failed to process a request.", e);
                throwValidationErrorApi(messages -> {
                    messages.addErrorsFailedToStopJob(GLOBAL, entity.getName());
                });
            }

                        logger.warn("Invalid request for {}.", path, response.getContentException());
                    } else {
                        logger.warn("Invalid request for {}. The response is {}", path, response.getContentAsString());
                    }
                }
            } catch (final Exception e) {
                logger.warn("Failed to register {}", filePath, e);
            }

        } catch (IOException e) {
            LOGGER.warn("Could not delete {} file. ", RESUME_PROPERTIES_FILENAME, e);
        }
    }

    private Properties loadResumptionFile(Path rootBuildDirectory) {
        Properties properties = new Properties();
        Path path = rootBuildDirectory.resolve(RESUME_PROPERTIES_FILENAME);
        if (!Files.exists(path)) {