Check Partition Information

This topic describes how to check the information of partitions in Milvus.

Verify if a partition exists

Verify if a partition exists in the specified collection.

from pymilvus import Collection
collection = Collection("book")      # Get an existing collection.
collection.has_partition("novel")

await milvusClient.hasPartition({
  collection_name: "book",
  partition_name: "novel",
});

hasPar, err := milvusClient.HasPartition(
  context.Background(),   // ctx
  "book",                 // CollectionName
  "novel",                // partitionName
)
if err != nil {
  log.Fatal("failed to check the partition:", err.Error())
}
log.Println(hasPar)

R<Boolean> respHasPartition = milvusClient.hasPartition(
  HasPartitionParam.newBuilder()
    .withCollectionName("book")
    .withPartitionName("novel")
    .build()
);
if (respHasPartition.getData() == Boolean.TRUE) {
  System.out.println("Partition exists.");
}

describe partition -c book -p novel

curl -X 'GET' \
  'http://localhost:9091/api/v1/partition/existence' \
  -H 'accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
    "collection_name": "book",
    "partition_name": "novel"
  }'

{"status":{},"value":true}

List all partitions

from pymilvus import Collection
collection = Collection("book")      # Get an existing collection.
collection.partitions

await milvusClient.showPartitions({
  collection_name: "book",
});

listPar, err := milvusClient.ShowPartitions(
  context.Background(),   // ctx
  "book",                 // CollectionName
)
if err != nil {
  log.Fatal("failed to list partitions:", err.Error())
}
log.Println(listPar)

R<ShowPartitionsResponse> respShowPartitions = milvusClient.showPartitions(
  ShowPartitionsParam.newBuilder()
          .withCollectionName("book")
          .build()
);
System.out.println(respShowPartitions);

list partitions -c book

curl -X 'GET' \
  'http://localhost:9091/api/v1/partitions' \
  -H 'accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
    "collection_name": "book"
  }'

{
  "status": {},
  "partition_names": [
    "_default",
    "novel"
  ],
  "partitionIDs": [
    434261413928632322,
    434261764795531265
  ],
  "created_timestamps": [
    434261413928632323,
    434261764795531266
  ],
  "created_utc_timestamps": [
    1656575828280,
    1656577166731
  ]
}

What’s next

• Learn more basic operations of Milvus:
  • Insert data into Milvus
  • Build an index for vectors
  • Conduct a vector search
  • Conduct a hybrid search