Shinsuke Sugaya <******@****.***> 1774491848 +0900

            doc.put("url", "http://example.com/bulk/" + i);
            doc.put("content", "This is test content for bulk document " + i);
            doc.put("boost", 1.0f);
            doc.put("role", "Rguest");
            documents.add(doc);
        }

        requestBody.put("documents", documents);

        // Execute bulk create

```

**Step 3: Import to Fess**

Option A: Via Admin UI
1. Go to **System > Backup**
2. Upload `fess-documents.json` (bulk format)
3. Click **Import**

Option B: Via Bulk API
```bash
curl -X PUT "http://localhost:8080/api/admin/documents/bulk" \
  -H "Content-Type: application/x-ndjson" \
  -u admin:admin \
  --data-binary @fess-documents.json
```

#### Index Settings Migration

    //

    /**
     * Performs bulk document operations (index multiple documents).
     * Validates document fields and adds default values where necessary.
     *
     * @param body the bulk request body containing documents to process
     * @return JSON response with bulk operation results
     */
    // PUT /api/admin/documents/bulk
    @Execute
    public JsonResponse<ApiResult> put$bulk(final BulkBody body) {

        }
    }

    /**
     * Performs bulk update operations using a custom bulk request builder.
     *
     * @param consumer Consumer function to configure the bulk request builder
     * @return true if all bulk operations were successful, false otherwise
     * @throws InterruptedRuntimeException if the operation is interrupted
     * @throws SearchEngineClientException if the bulk update fails
     */

            }
        }).execute()) {
            if (logger.isDebugEnabled()) {
                logger.debug("Bulk Response:\n{}", response.getContentAsString());
            }
            systemHelper.reloadConfiguration(resetJobs.get());

            if (logger.isInfoEnabled()) {
                logger.info("Bulk data import completed successfully: fileName={}, resetJobs={}", fileName, resetJobs.get());
            }

                final String index;
                final String filename;
                if (id.endsWith(".bulk")) {
                    index = id.substring(0, id.length() - 5);
                    filename = id;
                } else {
                    index = id;
                    filename = id + ".bulk";
                }
                return asStream(filename).contentTypeOctetStream().stream(out -> {

import java.util.List;
import java.util.Map;

/**
 * Request body for bulk document operations containing a list of documents.
 */
public class BulkBody {

    /**
     * Creates a new instance of BulkBody.
     */
    public BulkBody() {
        // Default constructor
    }

    /**
     * List of documents to be processed in bulk operations.
     */
    public List<Map<String, Object>> documents;

import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.util.ComponentUtil;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.bulk.BulkResponse;
import org.opensearch.action.search.SearchResponse;
import org.opensearch.action.update.UpdateRequestBuilder;
import org.opensearch.index.query.QueryBuilders;

    /**
     * The auto expand replicas for doc.
     */
    @Size(max = 10)
    public String autoExpandReplicasForDoc = ComponentUtil.getFessConfig().getIndexAutoExpandReplicas();

    /**
     * The flag to load bulk data during config index rebuild.
     */
    @Size(max = 10)
    public String loadBulkData;

    /**
     * The flag to rebuild fess_config indices.
     */
    @Size(max = 10)