A MilvusClient interface. This method drops a specified collection.

This method drops all data within the collection.
R<RpcStatus> dropCollection(DropCollectionParam requestParam);


Use the DropCollectionParam.Builder to construct a DropCollectionParam object.

import io.milvus.param.DropCollectionParam;
DropCollectionParam.Builder builder = DropCollectionParam.newBuilder();

Methods of DropCollectionParam.Builder:

withCollectionName(String collectionName)Sets the collection name. The collection name cannot be empty or null.collectionName: The name of the collection to drop.
build()Constructs a DropCollectionParam object.N/A

The can throw the following exceptions:

  • ParamException: error if the parameter is invalid.


This method catches all the exceptions and returns an R<RpcStatus> object.

  • If the API fails on the server side, it returns the error code and message from the server.

  • If the API fails by RPC exception, it returns R.Status.Unknow and the error message of the exception.

  • If the API succeeds, it returns R.Status.Success.


import io.milvus.param.*;

DropCollectionParam dropParam = DropCollectionParam.newBuilder()

R<RpcStatus> response = client.dropCollection(dropParam);
if (response.getStatus() != R.Status.Success.getCode()) {