diff --git a/airflow/dags/import_raw_graph.py b/airflow/dags/import_raw_graph.py
index dc59222..1ac436e 100644
--- a/airflow/dags/import_raw_graph.py
+++ b/airflow/dags/import_raw_graph.py
@@ -30,7 +30,7 @@ OPENSEARCH_PASSWD = Variable.get("OPENSEARCH_PASSWORD", "admin")
 ENTITIES = ["dataset", "datasource", "organization", "otherresearchproduct",
             "project", "publication", "relation", "software"]
 
-BULK_PARALLELISM = 4
+BULK_PARALLELISM = 2
 
 #
 
@@ -133,23 +133,21 @@ def import_raw_graph():
                         yield data
 
         succeeded = 0
-        failed = []
-        for success, item in helpers.parallel_bulk(client, actions=_generate_data()):
+        failed = 0
+        for success, item in helpers.parallel_bulk(client, actions=_generate_data(), raise_on_exception=False,
+                                                   chunk_size=500, max_chunk_bytes=10 * 1024 * 1024):
             if success:
                 succeeded = succeeded + 1
             else:
-                failed.append(item)
-
-        if len(failed) > 0:
-            print(f"There were {len(failed)} errors:")
-            for item in failed:
                 print(item["index"]["error"])
+                failed = failed+1
+
+        if failed > 0:
+            print(f"There were {failed} errors:")
 
         if len(succeeded) > 0:
             print(f"Bulk-inserted {succeeded} items (streaming_bulk).")
 
-
-
     @task
     def close_indexes():
         client = OpenSearch(