describeIndex()
This operation describes a specific index.
public DescribeIndexResp describeIndex(DescribeIndexReq request)
Request Syntax
describeIndex(DescribeIndexReq.builder()
.databaseName(String databaseName)
.collectionName(String collectionName)
.fieldName(String fieldName)
.indexName(String indexName)
.build()
)
BUILDER METHODS:
-
databaseName(String databaseName)
The name of an existing database.
-
collectionName(String collectionName)
The name of an existing collection in the above-specified collection.
Setting this to a non-existing collection results in MilvusException.
-
fieldName(String fieldName)
The name of the field on which the index is created.
-
indexName(String indexName)
The name of the index to describe.
Setting this to a non-existing collection results in MilvusException.
RETURN TYPE:
DescribeIndexResp
RETURNS:
A DescribeIndexResp object that contains the details of the specified index.
PARAMETERS:
-
indexName (String)
The name of the created index.
-
indexType (String)
The algorithm that is used to build the index.
On Zilliz Cloud, the value is always AUTOINDEX. For details, refer to AUTOINDEX Explained.
-
metricType (String)
The algorithm that is used to measure similarity between vectors. Possible values are IP, L2, and COSINE.
This is available only when the specified field is a vector field.
-
fieldName (String)
The name of the field on which the index has been created.
EXCEPTIONS:
-
MilvusClientExceptions
This exception will be raised when any error occurs during this operation.
Example
import io.milvus.v2.client.ConnectConfig;
import io.milvus.v2.client.MilvusClientV2;
import io.milvus.v2.service.index.request.DescribeIndexReq;
import io.milvus.v2.service.index.response.DescribeIndexResp;
// 1. Set up a client
ConnectConfig connectConfig = ConnectConfig.builder()
.uri("YOUR_CLUSTER_ENDPOINT")
.token("YOUR_CLUSTER_TOKEN")
.build();
MilvusClientV2 client = new MilvusClientV2(connectConfig);
// 2. Describe the index for the field "vector"
DescribeIndexReq describeIndexReq = DescribeIndexReq.builder()
.collectionName("test")
.fieldName("vector")
.build();
DescribeIndexResp describeIndexResp = client.describeIndex(describeIndexReq);