Release a Partition

This topic describes how to release a partition from memory after a search or a query to reduce memory usage.

Since version 2.3.0, Milvus has enhanced its partition operations and now supports cascading load and release operations. This means that you can perform any combination of the following operations:

• Release a loaded collection.
• Release a specific partition from a loaded collection.
• Release a loaded partition.
• Release a collection that has part of partitions loaded.

from pymilvus import Partition
partition = Partition("novel")       # Get an existing partition.
partition.release()

await milvusClient.releasePartitions({
    collection_name: "book",
    partition_names: ["novel"],
 });

err := milvusClient.ReleasePartitions(
  context.Background(),   // ctx
  "book",                 // CollectionName
  []string{"novel"},      // partitionNames
)
if err != nil {
  log.Fatal("failed to release partitions:", err.Error())
}

List<String> partitionNames = new ArrayList<>();
partitionNames.add("novel");
milvusClient.releasePartitions(
  ReleasePartitionsParam.newBuilder()
    .withCollectionName("book")
    .withPartitionNames(partitionNames)
    .build()
);

release -c book -p novel

curl -X 'DELETE' \
  'http://localhost:9091/api/v1/partitions/load' \
  -H 'accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
    "collection_name": "book",
    "partition_names": ["novel"],
    "replica_number": 1
  }'

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