Azure Synapse Spark pool pricing

Question

I have one doubt about cost of spark pool in synapse.

I have a spark pool with automatically pauses for 15 minutes idle, but I think it's costing more than expected.

For example, If two users runs different notebooks in the same pool during 10 minutes in the same time, we'll be charged per 10 or 20 minutes?

Answer 1

Hello @Robson Pelegrini ,

Thanks for the question and using MS Q&A platform.

Using Synapse Spark pools, You're charged for the number of instances and the hours running.

Spark Instance:
Spark instances are created when you connect to a Spark pool, create a session, and run a job. As multiple users may have access to a single Spark pool, a new Spark instance is created for each user that connects.

When you submit a second job, if there is capacity in the pool, the existing Spark instance also has capacity. Then, the existing instance will process the job. Otherwise, if capacity is available at the pool level, then a new Spark instance will be created.

For your question, since two users will connect to the same spark pool, two separate spark instances will be created. So you will be charged on both instances.
In total, you will be charged for 10 mins +2 instances (assuming both users are using 1 instance each during the 10 mins time)

Please check the below documentation to understand the spark pool pricing better.

https://learn.microsoft.com/en-us/azure/synapse-analytics/spark/apache-spark-concepts#spark-instances

https://learn.microsoft.com/en-us/azure/synapse-analytics/plan-manage-costs

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