getReplicas()

This operation gets replicas of a collection, returning information about each replica including its ID, node assignments, and shard details.

await milvusClient.getReplicas(data: GetReplicaReq)

Request Syntax

await milvusClient.getReplicas({
    collectionID: number | string,
    with_shard_nodes?: boolean,
    timeout?: number,
})

PARAMETERS:

• collectionID (number | string) -

  [REQUIRED]

  The ID of the collection.

• with_shard_nodes (boolean) -

  Whether to include shard node information in the response. Optional.

• timeout (number) -

  RPC timeout in milliseconds. Optional.

RETURNS Promise

This method returns a promise that resolves to a ReplicasResponse object.

{
    replicas: ReplicaInfo[],
    status:  ResStatus
}

PARAMETERS:

• replicas (ReplicaInfo[]) - A list of replicas currently serving the requested collection.

  • replicaID (string) -

    The replica identifier.

  • collectionID (string) -

    The collection identifier.

  • partition_ids (string[]) -

    The partition identifiers covered by this replica.

  • shard_replicas (ShardReplica[]) -

    Per-shard leader and node assignment information.

    • leaderID (string) -

    The query node ID acting as the shard leader.

    • leader_addr (string) -

    The address of the leader query node.

    • dm_channel_name (string) -

    The DML channel served by this shard.

    • node_ids (string[]) -

    The query node IDs that hold this shard’s data.

    • leaderID (string) -

      The query node ID acting as the shard leader.

    • leader_addr (string) -

      The address of the leader query node.

    • dm_channel_name (string) -

      The DML channel served by this shard.

    • node_ids (string[]) -

      The query node IDs that hold this shard’s data.

  • node_ids (string[]) -

    The query node IDs that participate in this replica.

  • resource_group_name (string) -

    The resource group that owns this replica’s nodes.

  • num_outbound_node (Record) -

    The count of outbound nodes per resource group, used during rebalancing.

• ResStatus A ResStatus object.

  • code (number) -

    A code that indicates the operation result. It remains 0 if this operation succeeds.

  • error_code (string | number) -

    An error code that indicates an occurred error. It remains Success if this operation succeeds.

  • reason (string) -

    The reason that indicates the reason for the reported error. It remains an empty string if this operation succeeds.

Example

import { MilvusClient } from '@zilliz/milvus2-sdk-node';

const client = new MilvusClient({
    address: 'localhost:19530',
    token: 'root:Milvus',
});
const desc = await client.describeCollection({ collection_name: 'my_collection' });
const replicas = await client.getReplicas({
    collectionID: desc.collectionID,
});
console.log(replicas.replicas);