Use the Bigtable change stream to BigQuery template

Create a BigQuery dataset

Use the Google Cloud console to create a dataset that stores the data.

1. In the Google Cloud console, go to the BigQuery page.

   Go to BigQuery

2. In the Explorerpane, click your project name.

3. Expand the more_vert Actionsoption and click Create dataset.

4. On the Create datasetpage, do the following:

   1. For Dataset ID, enter bigtable_bigquery_quickstart .
   2. Leave the remaining default settings as they are, and click Create dataset.

Create a table with a change stream enabled

1. In the Google Cloud console, go to the Bigtable Instancespage.

   Go to Instances

2. Click the ID of the instance that you are using for this quickstart.

   If you don't have an instance available, create an instance with the default configurations in a region near you.

3. In the left navigation pane, click Tables.

4. Click Create a table.

5. Name the table bigquery-changestream-quickstart .

6. Add a column family named cf .

7. Select Enable change stream.

8. Click Create.

9. On the Bigtable Tablespage, find your table bigquery-changestream-quickstart .

10. In the Change streamcolumn, click Connect.

11. In the dialog, select BigQuery.

12. Click Create Dataflow job.

13. In the provided parameter fields, enter your parameter values. You don't need to provide any optional parameters.

    1. Set the Bigtable application profile ID to default .
    2. Set the BigQuery dataset to bigtable_bigquery_quickstart .

14. Click Run job.

15. Wait until the job status is Startingor Runningbefore proceeding. It takes around 5 minutes once the job is queued.

16. Keep the job open in a tab, so you can stop the job when cleaning up your resources.

Write some data to Bigtable

1. In the Cloud Shell, write a few rows to Bigtable so the change log can write some data to BigQuery. As long as you write the data after the job is created, the changes appear. You don't have to wait for the job status to become running .

    cbt  
   -instance = 
    BIGTABLE_INSTANCE_ID 
     
   -project = 
    PROJECT_ID 
     
    \ 
     
    set 
     
   bigquery-changestream-quickstart  
   user123  
   cf:col1 = 
   abc
   cbt  
   -instance = 
    BIGTABLE_INSTANCE_ID 
     
   -project = 
    PROJECT_ID 
     
    \ 
     
    set 
     
   bigquery-changestream-quickstart  
   user546  
   cf:col1 = 
   def
   cbt  
   -instance = 
    BIGTABLE_INSTANCE_ID 
     
   -project = 
    PROJECT_ID 
     
    \ 
     
    set 
     
   bigquery-changestream-quickstart  
   user789  
   cf:col1 = 
   ghi 
   

   Replace the following:

   • PROJECT_ID : the ID of the project that you are using
   • BIGTABLE_INSTANCE_ID : the ID of the instance that contains the bigquery-changestream-quickstart table

View the change logs in BigQuery

1. In the Google Cloud console, go to the BigQuerypage.

   Go to BigQuery

2. In the Explorerpane, expand your project and the dataset bigtable_bigquery_quickstart .

3. Click the table bigquery-changestream-quickstart_changelog .

4. To see the change log, click Preview.