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Version: User Guides (Cloud)

FAQ: Migration

This topic lists the possible issues that you may encounter while you migrate data on Zilliz Cloud and the corresponding solution.

Contents​

FAQs​

How to migrate data from Elasticsearch to Zilliz Cloud?​

You can follow the steps below to import data from Elasticsearch to Zilliz Cloud.

  1. Connect to ElasticSearch.

    print(fmt.format("start connecting to ElasticSearch"))
    es = Elasticsearch(hosts=ELASTICSEARCH_HOST)

  2. Use the Elasticsearch Scroll API to retrieve datasets from Elasticsearch and import them into Zilliz Cloud. The following example imports the Elasticsearch data into a collection named hello_milvus in Zilliz Cloud.

    print(fmt.format("Start inserting entities"))
    rng = np.random.default_rng(seed=19530)
    resp = es.search(index=ELASTICSEARCH_INDEX, query={"match_all": {}}, scroll="1m", size=500)
    scroll_id = resp["_scroll_id"]

    query = {
      "scroll": "1m",
      "scroll_id": scroll_id,
    }

    # Start the primary key from 0
    pk = 0
    while len(resp["hits"]["hits"]):
        l = len(resp["hits"]["hits"])
        entities = [[str(i + pk) for i in range(l)], rng.random(l).tolist()]
        embeddings = []
        for item in resp['hits']['hits']:
            embeddings.append(list(item["_source"].values()))
            entities.append(embeddings)
            insert_result = hello_milvus.insert(entities)
            print(insert_result)
            pk += l
    resp = es.scroll(scroll_id=scroll_id, scroll="1m")

  3. Check the number of entities you have imported.

    hello_milvus.flush()
    print(f"Number of entities in Milvus: {hello_milvus.num_entities}")

Alternatively, you can also import data from Elasticsearch on the Zilliz Cloud web console. For more information, see Migrate from Elasticsearch .

Can I migrate data from a free cluster to a serverless or dedicated cluster?​

Yes. Zilliz Cloud supports migrating data from a free cluster to a serverless or dedicated cluster. For more information about how to migrate data, please refer to Migrate Between Clusters.