Manage Open Data

View Open Data

Review the metadata and use cases for each package to select the ones that fit your needs.

1. Log on to the DataWorks console. In the target region, click Data Governance > Data Map in the left-side navigation pane. On the page that appears, click Go to Data Map.

2. In the left-side navigation pane of the Data Map page, click the icon to go to the Data Catalog page.

3. In the catalog list, click DataWorks Open Data to go to the DataWorks Open Data page.

4. Switch to the Package List tab, then click Details for the desired package. In the Table List, you can view the metadata tables and their descriptions.

   • Differences between MetaData and Examples metadata:

     Package name	Open Data	Use cases
     MetaData	Table information, such as table schema, field descriptions, and data lineage. Scheduling nodes and instances, such as task execution status and dependencies. Management metadata, such as workspaces, members, and projects. Metadata such as Data Quality details and data governance details.	Suitable for data asset inventory, data lineage analysis, and dependency management.
     Examples	A collection of metadata metric data. Note The Examples package is provided by DataWorks and contains a collection of sample metric tables generated from metadata. The actual data is subject to change based on specific business requirements. The data displayed on the UI prevails.	Combined with the raw data from the MetaData package, you can quickly build common analysis scenarios, such as resource utilization analysis and task health assessment.

     Important

     For details about the schemas and fields of the metadata tables, see Details of Open Data table schemas.

5. To learn more about a metadata table, click Details for the table. On the table details page, you can view the Fields and Description to quickly understand the relationships between the Open Data metadata tables.

Install Open Data

Install the relevant data views within your tenant as a package to authorize the MaxCompute computing resources of a specified workspace to access these views.

1. Go to the Open Data page. On the Package List tab, select the target package (Metadata or Examples) and click Details in the Actions column.

2. On the package page, install the package that you want to use.

   • First-time installation: In the upper-right corner of the package page, click Load.

   • If an installation record exists: On the Installation History tab of the package page, click Load.

3. In the Install DataWorks Metadata dialog box, select the target workspace and the MaxCompute project to which you want to grant permissions.

   Note

   • The authorized MaxCompute project is the compute engine that is bound to the target workspace.

   • If the MaxCompute compute engine that is bound to the target workspace is in the Installed state, you do not need to install it again.

   • For workspaces in standard mode, we recommend installing and granting permissions to the MaxCompute compute engines for both the development and production environments.

4. Read the installation notes, select the confirmation checkbox, and then click Confirm Installation. After the installation is successful, you can view the new installation record on the Installation History tab.

To use metadata from other packages, repeat the steps above to install and grant permissions for additional packages.

Use Open Data

After installing Open Data, you can access the authorized metadata views in Data Studio or DataAnalysis by using the compute engine of the target workspace.

1. In the left-side navigation pane of the Data Map page, click the icon to go to the Data Catalog page.

2. In the catalog list, click MaxCompute, and then click the package whose name is prefixed with u_meta and suffixed with the region name.

3. On the details page, click Use Now > DataStudio or Use Now > DataAnalysis to go to the corresponding module to query and use the authorized metadata views.

   • Use in Data Studio:

     1. In the top menu bar of Data Studio, switch to the region and workspace where Open Data is installed.

     2. Create a MaxCompute node. On the node editing page, you can use Open Data to develop tasks.

     3. You can use the following sample code to verify that the installation is successful.

        SELECT  dt
                ,COUNT(*) AS database_count
        FROM    u_meta_hangzhou.databases
        GROUP BY dt
        ORDER BY dt ASC
        LIMIT   32
        ;

        Important

        • When you test the code, you must use the authorized MaxCompute computing resources.

        • Replace u_meta_hangzhou with the name of the package in your MaxCompute data catalog. The package name is prefixed with u_meta and suffixed with the region name.

   • Use in DataAnalysis:

     1. The SQL query page in DataAnalysis provides sample metadata analysis scripts that you can modify for your use.

     2. Click the icon in the upper-right corner of the SQL query page. Select your authorized workspace and the data source that was automatically created when you bound the MaxCompute computing resources. The data source has the same name as the compute engine. Then, you can run queries on the authorized metadata in DataAnalysis.

        Note

        Before you run the sample script, replace the REPLACE_WITH_WORKSPACE_ID parameter with the ID of the workspace that you want to query. Otherwise, an error occurs. For information about how to obtain a workspace ID, see Configure a workspace.

Uninstall Open Data

To stop using Open Data or revoke authorization from a MaxCompute project, uninstall the corresponding Open Data package.

1. In the left-side navigation pane of the Data Map page, click the icon to go to the Data Catalog page.

2. In the catalog list, select MaxCompute and then click the package whose name is prefixed with u_meta and suffixed with the region name.

3. On the Accessible Projects tab of the details page, find the target project and click Uninstall in the Actions column. In the Confirm Uninstallation of DataWorks Metadata dialog box that appears, read the uninstallation notes, select the confirmation checkbox, and then click Confirm Uninstallation.

   Important

   Uninstalling revokes permissions and causes dependent tasks to fail. Ensure that no active tasks rely on these views before you proceed.