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kafka-connect/kafka-connect/src/main/java/org/apache/iceberg/connect/IcebergSinkConfig.java

@@ -429,6 +429,18 @@ public JsonConverter jsonConverter() {
     return jsonConverter;
   }
 
+  /**
+   * This method attempts to load the Kafka Connect worker properties, which are not exposed to
+   * connectors. It does this by parsing the Java command used to launch the worker, extracting the
+   * name of the properties file, and then loading the file. <br>
+   * The sink uses these properties, if available, when initializing its internal Kafka clients. By
+   * doing this, Kafka-related properties only need to be set in the worker properties and do not
+   * need to be duplicated in the sink config. <br>
+   * If the worker properties cannot be loaded, then Kafka-related properties must be set via the
+   * `iceberg.kafka.*` sink configs.
+   *
+   * @return The Kafka Connect worker properties
+   */
   private Map<String, String> loadWorkerProps() {
     String javaCmd = System.getProperty("sun.java.command");
     if (javaCmd != null && !javaCmd.isEmpty()) {