如何使用 Java SQL ZDB97423871083819Z Azure Cosmos DB 重命名容器

Question

It look like that it is not possible to rename a container in the Azure Cosmos DB . It should be copy to the new container via a bulk operation. How can I do this with the Java SDK? Are there any samples for it?

Answer 1

Yes, you are right. Changing container name is currently not possible. As I understand, you want to discard old container (as you wanted to rename initially) and migrate data to new one.

Data Migration tool is a great tool to do so: Tutorial: Use Data migration tool to migrate your data to Azure Cosmos DB

Also, do check out Bulk Executor library for Java , API documentation and samples .

You can use importAll in BulkExecutor class:

ConnectionPolicy connectionPolicy = new ConnectionPolicy();
 RetryOptions retryOptions = new RetryOptions();
 
 // Set client's retry options high for initialization
 retryOptions.setMaxRetryWaitTimeInSeconds(120);
 retryOptions.setMaxRetryAttemptsOnThrottledRequests(100);
 connectionPolicy.setRetryOptions(retryOptions);
 connectionPolicy.setMaxPoolSize(1000);

 DocumentClient client = new DocumentClient(HOST, MASTER_KEY, connectionPolicy, null);

 String collectionLink = String.format("/dbs/%s/colls/%s", "mydb", "mycol");
 DocumentCollection collection = client.readCollection(collectionLink, null).getResource();

 DocumentBulkExecutor executor = DocumentBulkExecutor.builder().from(client, collection,
     collection.getPartitionKey(), collectionOfferThroughput).build();

 // Set retries to 0 to pass control to bulk executor
 client.getConnectionPolicy().getRetryOptions().setMaxRetryWaitTimeInSeconds(0);
 client.getConnectionPolicy().getRetryOptions().setMaxRetryAttemptsOnThrottledRequests(0);
 
 for(int i = 0; i < 10; i++) {
   List documents = documentSource.getMoreDocuments();

   BulkImportResponse bulkImportResponse = executor.importAll(documents, false, true, 40);

   // Validate that all documents inserted to ensure no failure.
   if (bulkImportResponse.getNumberOfDocumentsImported() < documents.size()) {
      for(Exception e: bulkImportResponse.getErrors()) {
          // Validate why there were some failures.
          e.printStackTrace();
      }
      break;
   }
 }

 executor.close();
 client.close();

Answer 2

I solve the problem by linking instead copying all the data. This simulate an rename of the container. Instead of one container I use two container now. The first contains only the name of the second container.

Now I can build the new version of the container. If I are finish I change the name of the saved container name. Then I drop the old container.

The tricky is to inform all nodes of the app to use the new container name.