# Bug in object replace

**URL:** <https://forum.weaviate.io/t/bug-in-object-replace/3092>\
**Category:** Support\
**Created:** [July 18, 2024, 3:36pm UTC](https://forum.weaviate.io/t/bug-in-object-replace/3092 "2024-07-18T15:36:54Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![asido](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.weaviate.io/asido/32/1986_2.png) [@asido](https://forum.weaviate.io/u/asido)\
**Post date:** [July 18, 2024, 3:36pm UTC](https://forum.weaviate.io/t/bug-in-object-replace/3092/1 "2024-07-18T15:36:54Z")

</div>

I believe there is a bug in object replace.

I have a collection that contains both vectorized and non-vectorized fields (set with `skip_vectorization=True`). When I call `collection.data.replace`, the object will only update if I change at least one of the vectorized fields. If I perform a replace changing only non-vectorized fields, no update happens.

### Server Setup Information

- Weaviate Server Version: 1.25.6 (local) & 1.25.7 (WCS)
- Deployment Method: local docker & WCS
- Multi Node? Number of Running Nodes: 1
- Client Language and Version: Python 4.6.5
- Multitenancy?: Yes

---

<div class="post-metadata">

**Author:** ![DudaNogueira](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.weaviate.io/dudanogueira/32/7846_2.png) [@DudaNogueira](https://forum.weaviate.io/u/DudaNogueira)\
**Post date:** [July 18, 2024, 5:52pm UTC](https://forum.weaviate.io/t/bug-in-object-replace/3092/2 "2024-07-18T17:52:59Z")

</div>

hi @asido !!

Welcome to our community 🤗

I was not able to reproduce this.

Here the code a crafted:

```python
import weaviate
from weaviate.util import generate_uuid5
from weaviate import classes as wvc

client = weaviate.connect_to_local()

client.collections.delete("Test")
collection = client.collections.create(
    "Test",
    properties=[
        wvc.config.Property(name="vectorized", data_type=wvc.config.DataType.TEXT, skip_vectorization=False),
        wvc.config.Property(name="non_vectorized", data_type=wvc.config.DataType.TEXT, skip_vectorization=True)
    ]
)

# now we insert an object
collection.data.insert({"vectorized": "this should be vectorized", "non_vectorized": "this should not be vectorized"}, uuid=generate_uuid5("example1"))

# now we replace the object
collection.data.replace(properties={"non_vectorized": "changing here"}, uuid=generate_uuid5("example1"))

# now we get the object
collection.query.fetch_objects().objects[0].properties

#outputs
#{'vectorized': None, 'non_vectorized': 'changing here'}

```

Please, let me know if this code is close to what you have crafted, or let me know how to reproduce this issue.

Thanks!

---

<div class="post-metadata">

**Author:** ![asido](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.weaviate.io/asido/32/1986_2.png) [@asido](https://forum.weaviate.io/u/asido)\
**Post date:** [July 18, 2024, 6:15pm UTC](https://forum.weaviate.io/t/bug-in-object-replace/3092/3 "2024-07-18T18:15:29Z")

</div>

Hi Duga,

Thanks for the prompt reply. I am out of office hours now so will have to try to create a reproducible sample tomorrow, however the main difference I can see between our implementations is that I do the replace on the entire object, even if some of the fields didn’t change. In your case that would be:

```auto
collection.data.replace(properties={"non_vectorized": "changing here", "vectorized": "this should be vectorized"}, uuid=generate_uuid5("example1"))

```

I can’t confirm right now that this will reproduce it but maybe you could give it a try? Otherwise I will try tomorrow.

Many thanks

---

<div class="post-metadata">

**Author:** ![asido](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.weaviate.io/asido/32/1986_2.png) [@asido](https://forum.weaviate.io/u/asido)\
**Post date:** [July 19, 2024, 2:10pm UTC](https://forum.weaviate.io/t/bug-in-object-replace/3092/4 "2024-07-19T14:10:02Z")

</div>

Ok this turned out to be more awkward to narrow down than I expected and seems to require some rather odd specifics that maybe point to some other underlying issue?

Here is a reproducible example:

```auto
import weaviate
from weaviate.util import generate_uuid5
from weaviate.classes import config as wvc

client = weaviate.connect_to_local(
    headers={"X-OpenAI-Api-Key": "<key>"}
)

# Create the collection and explicitly set a vectorizer
client.collections.delete("Test")
collection = client.collections.create(
    "Test",
    vectorizer_config=(
        wvc.Configure.Vectorizer.text2vec_openai(
            model="ada",
            model_version="002",
        )
    ),
    properties=[
        wvc.Property(name="non_vectorized", data_type=wvc.DataType.TEXT, skip_vectorization=True),
        wvc.Property(name="vectorized_text", data_type=wvc.DataType.TEXT),
        wvc.Property(name="vectorized_array", data_type=wvc.DataType.TEXT_ARRAY)
    ]
)

uuid = generate_uuid5("example1")

# Insert the new object
data = {"non_vectorized": "Original Text", "vectorized_text": "Original Text", "vectorized_array": []}
collection.data.insert(properties={**data}, uuid=uuid)

# Replacing a non-vectorized property on its own does not work
replace_data = {**data, "non_vectorized": "I Changed"}
collection.data.replace(properties=replace_data, uuid=uuid)
print(collection.query.fetch_objects().objects[0].properties)

# Replacing either vectorized property at the same time works
replace_data = {**data, "vectorized_text": "I Changed", "non_vectorized": "I Changed"}
collection.data.replace(properties=replace_data, uuid=uuid)
print(collection.query.fetch_objects().objects[0].properties)

replace_data = {**data, "vectorized_array": ["I Changed"], "non_vectorized": "I Changed"}
collection.data.replace(properties=replace_data, uuid=uuid)
print(collection.query.fetch_objects().objects[0].properties)

```

Here is what makes this strange:

1. If I don’t explicitly set a vectorizer\_config, this issue does not occur.
2. If I don’t have the text array in my schema, this issue does not occur.