rows.add(fields);
                dataRowCount++;
            }

            if (dataRowCount >= maxRows && logger.isDebugEnabled()) {
                logger.debug("CSV file exceeded max rows ({}), only first {} data rows extracted", maxRows, dataRowCount);
            }

            return buildExtractData(headers, rows);
        } catch (final IOException e) {

                        if (logger.isDebugEnabled()) {
                            logger.debug("Exception in an internal extractor.", e);
                        }
                    }
                }
            }
        } catch (final MessagingException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Exception in parsing BodyPart.", e);
            }
        }
    }

    /**

     */
    @Override
    public void explicitlyActivate(String profileId) {
        if (!activatedIds.contains(profileId)) {
            logger.debug("Profile with id: '" + profileId + "' has been explicitly activated.");

            activatedIds.add(profileId);
        }
    }

    /* (non-Javadoc)

			debug.PrintStack()
		}
		return b
	}

	m.mu.RUnlock()
	m.mu.Lock()
	defer m.mu.Unlock()
	// See if someone else fetched it while we waited for the lock.
	b, ok = m.buckets[bucket]
	if ok {
		if b.bucket != bucket {
			logger.Info("getBucket: newly cached bucket %s does not match this bucket %s", b.bucket, bucket)
			debug.PrintStack()
		}
		return b
	}

    public static final String STRICT_ARTIFACT_DESCRIPTOR_POLICY = "sadp";

    public static final String IGNORE_TRANSITIVE_REPOSITORIES = "itr";

    public static final String DEBUG = "debug";
    public static final String ENC = "enc";
    public static final String YJP = "yjp";

    protected Options options;
    protected final Set<Option> usedDeprecatedOptions = new LinkedHashSet<>();

                    + ", " + STRATEGY_PLUGIN + " and " + STRATEGY_SELF_FIRST);
        }
        log.debug("Populating class realm {}", realm.getId());
        for (Artifact artifact : artifacts) {
            String id = artifact.getGroupId() + ":" + artifact.getArtifactId();
            if (providedArtifacts.contains(id)) {
                log.debug("  Excluded {}", id);
            } else {
                Path file = artifact.getPath();

        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final long execTime = systemHelper.getCurrentTimeAsLong();
        if (logger.isDebugEnabled()) {
            logger.debug("Sending {} documents to a server.", docList.size());
        }
        try {
            if (fessConfig.isThumbnailCrawlerEnabled()) {
                final ThumbnailManager thumbnailManager = ComponentUtil.getThumbnailManager();

    client.setTrustAllCertificates(true);  // For testing only
});
```

### Debug Logging

Enable debug logging by adding to your logging configuration:

```xml
<logger name="org.codelibs.fess.crawler" level="DEBUG"/>
<logger name="org.codelibs.fess.crawler.client" level="DEBUG"/>
<logger name="org.codelibs.fess.crawler.extractor" level="DEBUG"/>
```

### Monitoring

```java
// Monitor crawling progress

            } catch (final ClientAbortException e) {
                logger.debug("Client aborts this request.", e);
            }
        } catch (final Exception e) {
            if (!(e.getCause() instanceof ClientAbortException)) {
                throw new WebApiException(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e);
            }
            logger.debug("Client aborts this request.", e);
        }
    }

    /**

      init {
        val platformSystemProperty = getPlatformSystemProperty()

        if (platformSystemProperty == JDK9_PROPERTY) {
          if (System.getProperty("javax.net.debug") == null) {
            System.setProperty("javax.net.debug", "")
          }
        } else if (platformSystemProperty == CONSCRYPT_PROPERTY) {
          if (Security.getProviders()[0].name != "Conscrypt") {
            if (!Conscrypt.isAvailable()) {