### CrawlerContext (`CrawlerContext.java`)

Execution context and configuration.

**Important Fields**:
```java
String sessionId                // Format: yyyyMMddHHmmssSSS
volatile CrawlerStatus status   // DONE, RUNNING
AtomicLong accessCount          // Thread-safe counter
int numOfThread = 10            // Crawler threads
int maxDepth = -1               // Max depth (-1 = unlimited)

        // Assert
        assertNotSame(original, copy, "clone should return a different instance");
        assertTrue(original.equals(copy), "Cloned instance should be equal by content");

        // Mutate original backing array; clone should remain based on previous snapshot
        data[0] = 99;
        assertFalse(original.equals(copy), "After mutation, original should not equal previous clone");

### Generate Source Code

    $ mvn dbflute:download # (one time command)
    $ mvn dbflute:freegen
    $ mvn license:format

### Integration Tests

Integration tests require a running Fess server with OpenSearch. Follow these steps:

#### 1. Build Fess

    $ mvn antrun:run  # Download OpenSearch plugins (if not done)
    $ mvn package     # Build the package

#### 2. Start Fess Server

     * archived URLs.
     *
     * Please note that the value of this tag is considered a hint and not a
     * command. Even though search engine crawlers may consider this information
     * when making decisions, they may crawl pages marked "hourly" less
     * frequently than that, and they may crawl pages marked "yearly" more
     * frequently than that. Crawlers may periodically crawl pages marked

    echo "   --prop val     set fess property (i.e. -Des.<prop>=<val>)"
}

# Parse any long getopt options and put them into properties before calling getopt below
# Be dash compatible to make sure running under ubuntu works
ARGV=""
while [ $# -gt 0 ]
do
    case $1 in
      --help) ARGV="$ARGV -h"; shift;;
      --*=*) properties="$properties -Dfess.${1#--}"
           shift 1
           ;;

/**
 * Manager for persistent and durable SMB handles.
 *
 * This class provides:
 * - Handle lifecycle management
 * - Persistent storage for persistent handles
 * - Expiration tracking for durable handles
 * - Thread-safe access to handle information
 */
public class PersistentHandleManager {

    private static final Logger log = LoggerFactory.getLogger(PersistentHandleManager.class);

            cb.query().setJobStatus_InScope(jobStatusList);
        });
    }

    /**
     * Updates the status of expired jobs that haven't finished.
     * Jobs that have been running longer than the expired job interval
     * without an end time are marked as failed.
     */
    public void updateStatus() {

                    // start crawling
                    crawlerList.get(startedCrawlerNum).execute();
                    crawlerStatusList.set(startedCrawlerNum, Constants.RUNNING);
                    startedCrawlerNum++;
                    activeCrawlerNum++;
                    ThreadUtil.sleep(crawlingExecutionInterval);
                    continue;
                }

    protected SessionManager sessionManager;

    /** Configuration manager for Fess application settings. */
    @Resource
    protected FessConfig fessConfig;

    /** Helper for managing user activity logging and tracking. */
    @Resource
    protected ActivityHelper activityHelper;

    /** Manager for handling HTTP response operations. */
    @Resource
    protected ResponseManager responseManager;

import org.codelibs.fess.util.ComponentUtil;

/**
 * Helper class for crawler logging operations.
 * Extends LogHelperImpl to provide specialized logging functionality for crawler operations,
 * including failure URL tracking and crawler statistics integration.
 */
public class CrawlerLogHelper extends LogHelperImpl {

    /**
     * Creates a new instance of CrawlerLogHelper.
     */
    public CrawlerLogHelper() {
        super();