Release a Partition

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

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()
);

await milvusClient.GetCollection("book").ReleasePartitionAsync("novel");
// You can release a set of partititons as follows:
// await milvusClient.GetCollection("book").ReleasePartitionsAsync(partitionNames: new List<string> {
//     "novel",
//     "history"
// })

Constraints

• Error will be returned at the attempt to release partition(s) when the parent collection is already loaded. Future releases will support releasing partitions from a loaded collection, and (if needed) then loading some other partition(s).
• “Load successfully” will be returned at the attempt to load the collection that is already loaded.
• Error will be returned at the attempt to load the collection when the child partition(s) is/are already loaded. Future releases will support loading the collection when some of its partitions are already loaded.
• Loading different partitions in a same collection via separate RPCs is not allowed.

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