milvus: [Bug]: Loading progress shows error instead of 0% for not loaded partitions

Is there an existing issue for this?

• I have searched the existing issues

Environment

- Milvus version: 2.2.0
- Deployment mode(standalone or cluster): standalone
- SDK version(e.g. pymilvus v2.0.0rc2): pymilvus v2.2.0
- OS(Ubuntu or CentOS): Ubuntu

Current Behavior

When a collection is not loaded, calling loading_progress() on it raises

pymilvus.exceptions.MilvusException: <MilvusException: (code=1, message=collection 437683206696992896 has not been loaded to memory or load failed)>

instead of returning 0%.

This seems to be a regression, I found this older bug report here: https://github.com/milvus-io/milvus/issues/18033, although I am not using multiple replicas.

Expected Behavior

return a loading progress of 0%

Steps To Reproduce

Run the script below:

import numpy as np
from pymilvus import (
    connections,
    Collection,
    FieldSchema,
    DataType,
    CollectionSchema,
    has_collection,
    loading_progress, MilvusException,
)

conn_alias = 'my_conn'
connections.connect(
            alias=conn_alias, host='localhost', port=19530
        )


def create_coll():
    document_id = FieldSchema(
        name='document_id', dtype=DataType.VARCHAR, max_length=100
    )
    offset = FieldSchema(
        name='offset',
        dtype=DataType.VARCHAR,
        max_length=100,
        is_primary=True,
    )
    dummy_vector = FieldSchema(
        name='dummy_vector', dtype=DataType.FLOAT_VECTOR, dim=1
    )

    schema = CollectionSchema(
        fields=[offset, document_id, dummy_vector],
        description='offset2id for DocumentArray',
    )

    return Collection(
        name='testcollection_offset2iddjajsdblsdfablabseflasdf',
        schema=schema,
        using=conn_alias,
        # **self._config.collection_config,  # we probably don't want to apply the same config here
    )


def build_index(coll):
    offset_index_params = {
        'metric_type': 'L2',
        'index_type': 'IVF_FLAT',
        'params': {'nlist': 1024},
    }
    coll.create_index(
        field_name='dummy_vector', index_params=offset_index_params
    )


coll = create_coll()
build_index(coll)
print(loading_progress(coll.name, using=conn_alias))

Milvus Log

No response

Anything else?

Seems to be a regression from here: https://github.com/milvus-io/milvus/issues/18033, although I am not using multiple replicas.