Muokkaa

Jaa

Upgrade an app to use the latest elastic database client library

  • Artikkeli

Applies to: Azure SQL Database

New versions of the Elastic Database client library are available through NuGet and the NuGet Package Manager interface in Visual Studio. Upgrades contain bug fixes and support for new capabilities of the client library.

For the latest version: Go to Microsoft.Azure.SqlDatabase.ElasticScale.Client.

Rebuild your application with the new library, and change your existing Shard Map Manager metadata stored in your databases in Azure SQL Database to support new features.

Performing these steps in order ensures that old versions of the client library are no longer present in your environment when metadata objects are updated, which means that old-version metadata objects won't be created after upgrade.

Upgrade steps

1. Upgrade your applications. In Visual Studio, download and reference the latest client library version into all of your development projects that use the library; then rebuild and deploy.

  • In your Visual Studio solution, select Tools --> NuGet Package Manager --> Manage NuGet Packages for Solution.
  • (Visual Studio 2013) In the left panel, select Updates, and then select the Update button on the package Azure SQL Database Elastic Scale Client Library that appears in the window.
  • (Visual Studio 2015) Set the Filter box to Upgrade available. Select the package to update, and select the Update button.
  • (Visual Studio 2017) At the top of the dialog, select Updates. Select the package to update, and select the Update button.
  • Build and Deploy.

2. Upgrade your scripts. If you're using PowerShell scripts to manage shards, download the new library version and copy it into the directory from which you execute scripts.

3. Upgrade your split-merge service. If you use the elastic database split-merge tool to reorganize sharded data, download and deploy the latest version of the tool. Detailed upgrade steps for the Service can be found here.

4. Upgrade your Shard Map Manager databases. Upgrade the metadata supporting your Shard Maps in Azure SQL Database. There are two ways you can accomplish this, using PowerShell or C#. Both options are shown below.

Option 1: Upgrade metadata using PowerShell

  1. Download the latest command-line utility for NuGet from here and save to a folder.
  2. Open a Command Prompt, navigate to the same folder, and issue the command: nuget install Microsoft.Azure.SqlDatabase.ElasticScale.Client
  3. Navigate to the subfolder containing the new client DLL version you have downloaded, for example: cd .\Microsoft.Azure.SqlDatabase.ElasticScale.Client.1.0.0\lib\net45
  4. Download the elastic database client upgrade script from the Script Center, and save it into the same folder containing the DLL.
  5. From that folder, run PowerShell .\upgrade.ps1 from the command prompt and follow the prompts.

Option 2: Upgrade metadata using C#

Alternatively, create a Visual Studio application that opens your ShardMapManager, iterates over all shards, and performs the metadata upgrade by calling the methods UpgradeLocalStore and UpgradeGlobalStore as in this example:

    ShardMapManager smm =
       ShardMapManagerFactory.GetSqlShardMapManager
       (connStr, ShardMapManagerLoadPolicy.Lazy);
    smm.UpgradeGlobalStore();

    foreach (ShardLocation loc in
     smm.GetDistinctShardLocations())
    {
       smm.UpgradeLocalStore(loc);
    }

These techniques for metadata upgrades can be applied multiple times without harm. For example, if an older client version inadvertently creates a shard after you have already updated, you can run upgrade again across all shards to ensure that the latest metadata version is present throughout your infrastructure.

Note: New versions of the client library published to-date continue to work with prior versions of the Shard Map Manager metadata on Azure SQL Database, and vice-versa. However to take advantage of some of the new features in the latest client, metadata needs to be upgraded. Metadata upgrades won't affect any user-data or application-specific data, only objects created and used by the Shard Map Manager. And applications continue to operate through the upgrade sequence described above.

Elastic database client version history

For version history, go to Microsoft.Azure.SqlDatabase.ElasticScale.Client

Related content

Not using elastic database tools yet? Check out our Getting Started Guide. For questions, contact us on the Microsoft Q&A question page for SQL Database and for feature requests, add new ideas or vote for existing ideas in the SQL Database feedback forum.