loadCollection()

This operation loads the data of a specific collection into memory.

public void loadCollection(LoadCollectionReq request)

Request Syntax

loadCollection(LoadCollectionReq.builder()
    .databaseName(String databaseName)
    .collectionName(String collectionName)
    .numReplicas(Integer numReplicas)
    .async(Boolean async)
    .sync(Boolean sync)
    .timeout(Long timeout)
    .refresh(Boolean refresh)
    .loadFields(List<String> loadFields)
    .skipLoadDynamicField(Boolean skipLoadDynamicField)
    .resourceGroups(List<String> resourceGroups)
    .build()
);

BUILDER METHODS:

• databaseName(String databaseName) -

  The name of the database. Defaults to the current database if not specified.

• collectionName(String collectionName) -

  The name of the target collection.

• numReplicas(Integer numReplicas) -

  The number of replicas to load. Defaults to 1.

• async(Boolean async) -

  Whether to run the operation asynchronously. Defaults to Boolean.FALSE.

• sync(Boolean sync) -

  Whether to wait synchronously until the operation completes. Defaults to Boolean.TRUE.

• timeout(Long timeout) -

  The timeout duration in milliseconds. Defaults to 60000L.

• refresh(Boolean refresh) -

  Whether to refresh load to include new fields. Defaults to Boolean.FALSE.

• loadFields(List<String> loadFields) -

  A list of specific field names to load. Defaults to new ArrayList<>().

• skipLoadDynamicField(Boolean skipLoadDynamicField) -

  Whether to skip loading the dynamic field. Defaults to Boolean.FALSE.

• resourceGroups(List<String> resourceGroups) -

  A list of resource group names for load balancing. Defaults to new ArrayList<>().

RETURNS:

void

EXCEPTIONS:

• MilvusClientException

  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.collection.request.LoadCollectionReq;

// 1. Set up a client
ConnectConfig connectConfig = ConnectConfig.builder()
        .uri("http://localhost:19530")
        .token("root:Milvus")
        .build();

MilvusClientV2 client = new MilvusClientV2(connectConfig);

// 2. Load collection "test"
LoadCollectionReq loadCollectionReq = LoadCollectionReq.builder()
        .collectionName("test")
        .build();
client.loadCollection(loadCollectionReq);