PROFESSIONAL-CLOUD-DATABASE-ENGINEER Question #162: Real Exam Question with Answer & Explanation

Question

You have an application that performs numerous reads and writes all day running in a single Bigtable cluster. A new batch analytics job needs to read the same data and you want to make sure that the new job does not affect the existing workload. What should you do-

Options

• AScale up the Bigtable instance by manually adding more nodes.
• BAdd a new cluster to the existing instance, and enable multi-cluster routing in the app profile.
• CAdd a new cluster to the existing instance, and isolate the workloads with two app profiles.
• DScale up the Bigtable instance by enabling Autoscaling.

Explanation

This is the only way to isolate your analytical reads from the production workload-by adding a second cluster in the same Bigtable instance and creating two app profiles (one bound to the primary cluster for OLTP, and one bound to the new cluster for analytics). This keeps the batch job’s heavy scans off your production nodes, while still reading the same underlying data.

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