From fffd60ea2f08fa5557b2a11b9e98354fc8df751b Mon Sep 17 00:00:00 2001
From: Vaibhav Dewangan <vaibhavdewanganaol@gmail.com>
Date: Fri, 31 Jul 2026 21:52:43 +0530
Subject: [PATCH] fix(batch): set has_errors on per-object/reference errors in
 stream recv

In _BatchBaseSync/_BatchBaseAsync.__recv, each failed object or reference
from the server was wrapped in a fresh BatchObjectReturn/BatchReferenceReturn
with only `errors` set. has_errors defaults to False on the dataclass and
__add__ only ORs it forward (`self.has_errors or other.has_errors`), so it
never became True even though `errors` was non-empty. This meant
`if result.has_errors:` never fired on data.ingest() (and on batch.stream(),
though failed_objects/failed_references were populated correctly there since
those are tracked separately).

Fixes #2107
---
 mock_tests/test_batch.py             | 41 ++++++++++++++++++++++++++++
 weaviate/collections/batch/async_.py |  2 ++
 weaviate/collections/batch/sync.py   |  2 ++
 3 files changed, 45 insertions(+)

diff --git a/mock_tests/test_batch.py b/mock_tests/test_batch.py
index c00bd08db..f8b114534 100644
--- a/mock_tests/test_batch.py
+++ b/mock_tests/test_batch.py
@@ -60,3 +60,44 @@ def test_ssb_canceled_stream(
         for i in range(HOW_MANY):
             batch.add_object({"name": f"Object {i}"})
     assert len(service.uuids) == HOW_MANY
+
+
+class MockFailedObjectWeaviateService(weaviate_pb2_grpc.WeaviateServicer):
+    def BatchStream(
+        self,
+        request_iterator: Generator[batch_pb2.BatchStreamRequest, None, None],
+        context: grpc.ServicerContext,
+    ) -> Generator[batch_pb2.BatchStreamReply, None, None]:
+        yield batch_pb2.BatchStreamReply(started=batch_pb2.BatchStreamReply.Started())
+        for request in request_iterator:
+            if request.HasField("data"):
+                uuids = [obj.uuid for obj in request.data.objects.values]
+                yield batch_pb2.BatchStreamReply(
+                    results=batch_pb2.BatchStreamReply.Results(
+                        errors=[
+                            batch_pb2.BatchStreamReply.Results.Error(
+                                uuid=uuid, error="mock failure"
+                            )
+                            for uuid in uuids
+                        ]
+                    )
+                )
+            if request.HasField("stop"):
+                return
+
+
+@pytest.fixture(scope="function")
+def failed_object_stream(
+    canceled_stream_client: weaviate.WeaviateClient, start_grpc_server: grpc.Server
+):
+    service = MockFailedObjectWeaviateService()
+    weaviate_pb2_grpc.add_WeaviateServicer_to_server(service, start_grpc_server)
+    return canceled_stream_client.collections.use(mock_class["class"])
+
+
+def test_ingest_has_errors_on_failed_object(
+    failed_object_stream: weaviate.collections.Collection,
+):
+    result = failed_object_stream.data.ingest([{"name": "Object 1"}])
+    assert result.has_errors is True
+    assert len(result.errors) == 1
diff --git a/weaviate/collections/batch/async_.py b/weaviate/collections/batch/async_.py
index 8b997586c..2e7aa9279 100644
--- a/weaviate/collections/batch/async_.py
+++ b/weaviate/collections/batch/async_.py
@@ -407,6 +407,7 @@ async def __recv(self) -> None:
                         result_objs += BatchObjectReturn(
                             _all_responses=[err],
                             errors={cached.index: err},
+                            has_errors=True,
                         )
                         failed_objs.append(err)
                         logger.warning(
@@ -428,6 +429,7 @@ async def __recv(self) -> None:
                         )
                         result_refs += BatchReferenceReturn(
                             errors={cached.index: err},
+                            has_errors=True,
                         )
                         failed_refs.append(err)
                         logger.warning(
diff --git a/weaviate/collections/batch/sync.py b/weaviate/collections/batch/sync.py
index 6627f8911..cff631e0e 100644
--- a/weaviate/collections/batch/sync.py
+++ b/weaviate/collections/batch/sync.py
@@ -365,6 +365,7 @@ def __recv(self) -> None:
                         result_objs += BatchObjectReturn(
                             _all_responses=[err],
                             errors={cached.index: err},
+                            has_errors=True,
                         )
                         failed_objs.append(err)
                         logger.warning(
@@ -387,6 +388,7 @@ def __recv(self) -> None:
                         failed_refs.append(err)
                         result_refs += BatchReferenceReturn(
                             errors={cached.index: err},
+                            has_errors=True,
                         )
                         logger.warning(
                             {