* <p>
     * This method starts a process with the given command list, manages its execution,
     * handles timeouts, and logs relevant information. It ensures the process is destroyed
     * if it exceeds the allowed execution time or becomes unresponsive. The method also
     * captures and logs the process output for debugging purposes.
     * </p>
     *
     * @param thumbnailId the identifier for the thumbnail being generated

<Configuration status="WARN">

	<Properties>
		<Property name="domain.name" value="${sys:fess.log.name:-fess}" />
		<Property name="log.level" value="${sys:fess.log.level:-debug}" />
		<Property name="root.log.level" value="${sys:fess.log.level:-info}" />
		<Property name="log.pattern" value="%d [%t] %-5p %msg%n" />
		<Property name="log.file.basedir" value="${sys:fess.log.path:-target/logs}" />
		<Property name="backup.date.suffix" value="_%d{yyyyMMdd}" />

- ✅ Reduced code duplication
- ✅ Clear exception messages

### 3. Error Handling
- ✅ Archive extractors continue on partial failures
- ✅ Processing statistics in error messages
- ✅ Specific file names in error logs

### 4. Error Messages
- ✅ Encoding information in TextExtractor errors
- ✅ File type context in MS Office errors
- ✅ Archive type in archive extractor errors

## Testing Best Practices

import java.io.Serializable;
import java.util.List;

import org.codelibs.fess.util.ComponentUtil;

/**
 * Pager class for managing job log pagination in the admin interface.
 * This class handles pagination functionality for job log listings and provides
 * search criteria for filtering job logs.
 */
public class JobLogPager implements Serializable {

    /** Serial version UID for serialization */

    /** Flag indicating whether to use local Fesen instance */
    protected boolean useLocalFesen = true;

    /** Path to the log file for this job execution */
    protected String logFilePath;

    /** Log level for this job execution */
    protected String logLevel;

    /** Suffix to append to log file names */
    protected String logSuffix = StringUtil.EMPTY;

    /** List of JVM options to apply when executing the job */

            "The account used is a Computer Account. Use your global user account or local user account to access this server.",
            "The user must change his password before he logs on the first time.", "The object was not found.",
            "The referenced account is currently locked out and may not be logged on to.", "Connection refused",
            "The remote system is not reachable by the transport.",

);

suggester.indexer()
    .indexFromDocument(reader, 2, 100)  // threads=2, batch=100
    .getResponse();
```

### Index from Query Logs

```java
import org.codelibs.fess.suggest.index.contents.querylog.QueryLog;

// Add suggestions from search query logs
QueryLog queryLog = new QueryLog("user search query", "user123");
suggester.indexer().indexFromQueryLog(queryLog);
```

### Popular Words Analytics

import org.opensearch.monitor.os.OsStats;
import org.opensearch.monitor.process.ProcessProbe;

/**
 * This class is a timer target for monitoring system-level statistics.
 * It collects and logs information about the operating system, process,
 * JVM, and search engine.
 */
public class SystemMonitorTarget extends MonitorTarget {
    private static final Logger logger = LogManager.getLogger(SystemMonitorTarget.class);

            logFilePath = value != null ? value : new File(targetDir, "logs").getAbsolutePath();
        }
        cmdList.add("-Dfess.log.path=" + logFilePath);
        addSystemProperty(cmdList, "fess.log.name", getLogName("fess"), getLogName(StringUtil.EMPTY));
        if (logLevel == null) {
            addSystemProperty(cmdList, "fess.log.level", null, null);
        } else {

    }

    /**
     * Downloads a specific backup file by ID.
     * Supports various backup formats including system properties, bulk data, and NDJSON logs.
     *
     * @param id the backup file ID to download
     * @return stream response containing the backup file data
     */
    // GET /api/admin/backup/file/{id}
    @Execute