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A MilvusClient interface. This method drops an index and its corresponding index file in the collection.

R<RpcStatus> dropIndex(DropIndexParam requestParam);


Use the DropIndexParam.Builder to construct a DropIndexParam object.

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

Methods of DropIndexParam.Builder:

withCollectionName(collectionName)Sets the collection name. The collection name cannot be empty or null.collectionName: The name of the collection whose index needs to be dropped.
withIndexName(String indexName)Sets the name of the index to drop. If no index name is specified, the default index name is an empty string.indexName: The name of the index to drop.
build()Constructs a DropIndexParam 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.*;

DropIndexParam param = DropIndexParam.newBuilder()
R<RpcStatus> response = client.dropIndex(param)
if (response.getStatus() != R.Status.Success.getCode()) {

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