diff --git a/src/main/java/net/geedge/asw/module/runner/util/PcapParserThread.java b/src/main/java/net/geedge/asw/module/runner/util/PcapParserThread.java
index abd3d31..dc91382 100644
--- a/src/main/java/net/geedge/asw/module/runner/util/PcapParserThread.java
+++ b/src/main/java/net/geedge/asw/module/runner/util/PcapParserThread.java
@@ -17,6 +17,7 @@ import org.opensearch.client.opensearch.core.BulkRequest;
 import org.opensearch.client.opensearch.core.BulkResponse;
 import org.opensearch.client.opensearch.core.bulk.BulkResponseItem;
 import org.opensearch.client.opensearch.indices.CreateIndexRequest;
+import org.opensearch.client.opensearch.indices.DeleteIndexRequest;
 import org.opensearch.client.opensearch.indices.ExistsRequest;
 import org.opensearch.client.opensearch.indices.IndexSettings;
 
@@ -152,8 +153,12 @@ public class PcapParserThread implements Runnable {
      * @param jsonArray
      */
     private void uploadToOpenSearch(JSONArray jsonArray) {
+        String pcapPath = pcapEntity.getPath();
+        String md5Hex = T.DigestUtil.md5Hex(T.FileUtil.file(pcapPath));
+
         String workspaceName = pcapEntity.getWorkspace().getName();
-        String indexName = String.format("workspace-%s", workspaceName);
+        String indexName = String.format("workspace-%s-%s", workspaceName, md5Hex);
+
         try {
             // check if index exists
             boolean indexExists = openSearchClient.indices()
@@ -162,23 +167,25 @@ public class PcapParserThread implements Runnable {
             if (log.isDebugEnabled()) {
                 log.debug("[uploadToOpenSearch] [index: {}] [exists: {}]", indexName, indexExists);
             }
-            // if index not exists, create index with default settings
-            if (!indexExists) {
-                openSearchClient.indices().create(
-                        new CreateIndexRequest.Builder()
-                                .index(indexName)
-                                .settings(new IndexSettings.Builder().build())
-                                .build()
-                );
-                log.debug("[uploadToOpenSearch] [index: {}] [created]", indexName);
+            // if index exists, delete
+            if (indexExists) {
+                openSearchClient.indices().delete(new DeleteIndexRequest.Builder().index(indexName).build());
+                log.debug("[uploadToOpenSearch] [index: {}] [deleted]", indexName);
             }
 
+            // create index with default settings
+            openSearchClient.indices().create(
+                    new CreateIndexRequest.Builder()
+                            .index(indexName)
+                            .settings(new IndexSettings.Builder().build())
+                            .build()
+            );
+
             // upload data in bulk
             BulkRequest.Builder br = new BulkRequest.Builder();
-            String pcapId = pcapEntity.getId();
             for (int i = 0; i < jsonArray.size(); i++) {
                 JSONObject jsonObject = (JSONObject) jsonArray.get(i);
-                String id = pcapId + "-" + String.valueOf(i);
+                String id = String.valueOf(i);
                 br.operations(op -> op.index(
                         idx -> idx.index(indexName)
                                 .id(id)