Google Associate Cloud Engineer Question 259
Select 3Google Cloud PlatformYou are managing a data processing workflow using Google Cloud Composer. One of the tasks in your Directed Acyclic Graph (DAG) is failing, and you need to review the job status to identify the issue. Which of the following steps should you take to effectively investigate the task failure?
- A
Check the Airflow task logs in the Cloud Console for detailed error messages.
- B
Review the status of the task in the Airflow web interface to see if it is marked as 'failed'.
- C
Use the
gcloud composer jobs describecommand to get detailed job status information. - D
Verify the status of the task's dependencies in the Airflow web interface to ensure they completed successfully.
- E
Check the Google Cloud Storage bucket for any output files generated by the task.
Show answer and explanation
Correct answers: A, B, D
Explanation
To effectively investigate a task failure in Google Cloud Composer, it's important to check the Airflow logs for detailed error messages, review the task status in the Airflow web interface, and ensure that all dependencies were met by verifying the status of prerequisite tasks. These steps provide a comprehensive approach to diagnosing and resolving task failures in a Cloud Composer environment.
- A. Correct.
Checking the Airflow task logs in the Cloud Console provides detailed error messages that can help diagnose the failure.
- B. Correct.
Reviewing the status of the task in the Airflow web interface allows you to confirm if the task is marked as 'failed' and investigate further.
- C. Incorrect.
The
gcloud composer jobs describecommand does not exist. Cloud Composer uses Airflow, which doesn't have a CLI command by this name. - D. Correct.
Verifying the status of the task's dependencies helps ensure that all prerequisite tasks completed successfully, which could be a reason for the failure.
- E. Incorrect.
Checking the Google Cloud Storage bucket for output files might not directly help in diagnosing a task failure unless the task is supposed to generate output files.