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  • Java


A MilvusClient interface. This method releases the specified collection and all data within it from memory.

R<RpcStatus> releaseCollection(ReleaseCollectionParam requestParam);


Use the ReleaseCollectionParam.Builder to construct a ReleaseCollectionParam object.

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

Methods of ReleaseCollectionParam.Builder:

Method Description Parameters
withCollectionName(String collectionName) Sets the collection name. Collection name cannot be empty or null. collectionName: The name of the collection to release.
build() Constructs a ReleaseCollectionParam 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.Unknown and the error message of the exception.

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


import io.milvus.param.*;

ReleaseCollectionParam param = ReleaseCollectionParam.newBuilder()
R<Boolean> response = client.releaseCollection(param);
if (response.getStatus() != R.Status.Success.getCode()) {