[Bug]: nlist parameter does not take effect when create collection by restful api

[cnlkl]

Is there an existing issue for this?

• I have searched the existing issues

Environment

- Milvus version: v2.4.5
- Deployment mode(standalone or cluster): standalone
- MQ type(rocksmq, pulsar or kafka):    
- SDK version(e.g. pymilvus v2.0.0rc2): RESTful API
- OS(Ubuntu or CentOS): CentOS
- CPU/Memory: 
- GPU: 
- Others:

Current Behavior

When creating a Collection through the HTTP REST API and creating IVF_FLAT index at the same time, the nlist parameter does not take effect.

Expected Behavior

Success create collection and index with specify nlist

Steps To Reproduce

It can be reproduced by  using the example in the official documentation.


export MILVUS_URI="localhost:19530"

curl --location --request POST "http://${MILVUS_URI}/v2/vectordb/collections/create" \
--header "Content-Type: application/json" \
--data-raw '{
    "collectionName": "custom_setup_indexed",
    "schema": {
        "autoId": false,
        "enabledDynamicField": false,
        "fields": [
            {
                "fieldName": "my_id",
                "dataType": "Int64",
                "isPrimary": true
            },
            {
                "fieldName": "my_vector",
                "dataType": "FloatVector",
                "elementTypeParams": {
                    "dim": "5"
                }
            }
        ]
        
    },
    "indexParams": [
        {
            "fieldName": "my_vector",
            "metricType": "COSINE",
            "indexName": "my_vector",
            "params": {
                "index_type": "IVF_FLAT",
                "nlist": "1024"
            }
        },
        {
            "fieldName": "my_id",
            "indexName": "my_id",
            "params": {
                "index_type": "STL_SORT"
            }            
        }
    ]
}'

### Milvus Log

_No response_

### Anything else?

_No response_

[yanliang567]

sounds like a known issue for now.
/assign @smellthemoon
/unassign