What happens when a workload posts a job creation request three times to the Databricks REST API?

When a workload posts a job creation request three times to the Databricks REST API, the correct outcome is that only one job will be defined and executed. This behavior is due to the fact that the Databricks REST API is designed to prevent the duplication of jobs with the same properties. If a job creation request is received with the same parameters as an existing job, the API recognizes it and will not create a new job instance, leading to just the original job being defined and executed.

Additionally, in a well-architected job scheduling system, redundancy in job definitions is avoided to prevent confusion and inefficient resource utilization. Therefore, even if multiple requests are made, the system asserts that only a single job definition is present at any one time for the same logical job, preserving the integrity of the job management system.

The misconception in some of the other choices includes the idea that multiple executions or job definitions could occur, which does not align with the API's fundamental design intent to manage jobs effectively and avoid duplication.