[Python] Getting exception when trying to delete entity in Milvis vector database using...

I am working on the python application and I am storing data in Milvus vector database. I have written the following code to delete entity in n Milvus vector database using pymilvus library.

def delete_entities(self, collection_name, entity_id):
expr = "obj_id in [" + entity_id + "]"
collection = Collection(collection_name)
collection.delete(expr)



When I execute the code, I am getting this error:

RPC error: [delete], <MilvusException: (code=65535, message=failed to create expr plan, expr = obj_id in [65ce930d39989b871863b5dd])>, <Time:{'RPC start': '2024-02-16 00:53:20.651576', 'RPC error': '2024-02-16 00:53:20.653786'}>
Exception in thread Thread-9:
Traceback (most recent call last):
File "C:\Users\usajid\AppData\Local\Programs\Python\Python39\lib\threading.py", line 980, in _bootstrap_inner
self.run()
File "C:\Users\usajid\AppData\Local\Programs\Python\Python39\lib\threading.py", line 917, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\usajid\Desktop\semanticsearch\src\backend\components\consumer.py", line 61, in subscribe_topic
self.COOPERANTS.delete_entities(collection_name, payload['documentKey']['_id']['$oid'])
File "C:\Users\usajid\Desktop\semanticsearch\src\backend\components\clients.py", line 50, in delete_entities
collection.delete(expr)
File "c:\Users\usajid\Desktop\semanticsearch\.venv\lib\site-packages\pymilvus\orm\collection.py", line 573, in delete
res = conn.delete(self._name, expr, partition_name, timeout=timeout, **kwargs)
File "c:\Users\usajid\Desktop\semanticsearch\.venv\lib\site-packages\pymilvus\decorators.py", line 135, in handler
raise e from e
File "c:\Users\usajid\Desktop\semanticsearch\.venv\lib\site-packages\pymilvus\decorators.py", line 131, in handler
return func(*args, **kwargs)
File "c:\Users\usajid\Desktop\semanticsearch\.venv\lib\site-packages\pymilvus\decorators.py", line 170, in handler
return func(self, *args, **kwargs)
File "c:\Users\usajid\Desktop\semanticsearch\.venv\lib\site-packages\pymilvus\decorators.py", line 110, in handler
raise e from e
File "c:\Users\usajid\Desktop\semanticsearch\.venv\lib\site-packages\pymilvus\decorators.py", line 74, in handler
return func(*args, **kwargs)
File "c:\Users\usajid\Desktop\semanticsearch\.venv\lib\site-packages\pymilvus\client\grpc_handler.py", line 602, in delete
raise err from err
File "c:\Users\usajid\Desktop\semanticsearch\.venv\lib\site-packages\pymilvus\client\grpc_handler.py", line 596, in delete
check_status(response.status)
File "c:\Users\usajid\Desktop\semanticsearch\.venv\lib\site-packages\pymilvus\client\utils.py", line 54, in check_status
raise MilvusException(status.code, status.reason, status.error_code)
pymilvus.exceptions.MilvusException: <MilvusException: (code=65535, message=failed to create expr plan, expr = obj_id in [65ce930d39989b871863b5dd])>




Can anyone tell me how to fix this issue?

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