# Migration cause Weaviate Cloud cluster restart all the time

**URL:** <https://forum.weaviate.io/t/migration-cause-weaviate-cloud-cluster-restart-all-the-time/9838>\
**Category:** Support\
**Tags:** technical\
**Created:** [January 21, 2025, 3:52pm UTC](https://forum.weaviate.io/t/migration-cause-weaviate-cloud-cluster-restart-all-the-time/9838 "2025-01-21T15:52:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![becky](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.weaviate.io/becky/32/3404_2.png) [@becky](https://forum.weaviate.io/u/becky)\
**Post date:** [January 21, 2025, 3:52pm UTC](https://forum.weaviate.io/t/migration-cause-weaviate-cloud-cluster-restart-all-the-time/9838/1 "2025-01-21T15:52:06Z")

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### Description

Hi, my team is attempting to migrate Weaviate Cloud data from version 1.25 to a 1.28 cluster. The core code of the migration script is as follows. We are using the Weaviate client v4.

When executing the migration, the following errors occur. We have tried using dynamic batch or fixed-sized batch settings with `size=100` and `concurrent_request=1`, but there are still a large number of errors. After multiple errors, the cluster node will directly disconnect and restart.  
with collection\_tgt.batch.dynamic() as batch:  
for q in collection\_src.iterator(include\_vector=True):  
batch.add\_object(  
properties=q.properties,  
vector=q.vector[“default”],  
uuid=q.uuid  
)

 ![image](https://canada1.discourse-cdn.com/flex027/uploads/weaviate/original/2X/c/c75f67239d750a517177883ad4f4ce8924c25ff5.jpeg)

We have 1M objects to migrate. Are there any alternative solutions to perform a safe data migration?

### Server Setup Information

- Weaviate Server Version: 1.25 → 1.28
- Number of Running Nodes: 1
- Client Language and Version: python, weaviate-client v4
- Multitenancy?: No

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**Author:** ![Shahin](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.weaviate.io/shahin/32/7944_2.png) [@Shahin](https://forum.weaviate.io/u/Shahin)\
**Post date:** [January 22, 2025, 11:09am UTC](https://forum.weaviate.io/t/migration-cause-weaviate-cloud-cluster-restart-all-the-time/9838/2 "2025-01-22T11:09:05Z")

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Hello @becky,

Welcome to the community! It’s great to have you here.

I’ve received your ticket in Support and will follow up with a detailed reply there since you are a cloud customer and our ticketing system differs from the community forum. You could add the following snippet to your code to help identify the reason behind any failures:

> failed\_objects = client.batch.failed\_objects  
> if failed\_objects:  
> print(f"Number of failed objects: {len(failed\_objects)}“)  
> for i, failed\_obj in enumerate(failed\_objects, 1):  
> print(f"Failed object {i}: {failed\_obj}”)  
> else:  
> print(f"All objects successfully inserted into ‘{collection\_name}’.")

This code will check for any objects that failed to be inserted and print out the reasons for the failures, helping you pinpoint what might be going wrong.

Regards,  
Mohamed Shahin  
Weaviate Support

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**Author:** ![pdp](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.weaviate.io/pdp/32/3590_2.png) [@pdp](https://forum.weaviate.io/u/pdp)\
**Post date:** [February 16, 2025, 1:18pm UTC](https://forum.weaviate.io/t/migration-cause-weaviate-cloud-cluster-restart-all-the-time/9838/3 "2025-02-16T13:18:03Z")

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I am also experiencing the same issue and frankly I am really annoyed by it. How is this serverless when it basically collapses on the smallest load?

Not cool!