Hi @Anonymous
Thank you for reaching out to us with your query regarding Apache Spark pool configuration in Azure Synapse.
I understand that you are having trouble finding Microsoft documentation on how to set up Apache Spark configuration for version 3.3. I'm sorry to hear that the old method of uploading a text config file from local is no longer supported. However, I'm here to help you with the latest method of configuring the Apache Spark pool.
To configure the Apache Spark pool, I suggest using the Azure Synapse Studio. You can find detailed information on how to configure the Apache Spark pool in Azure Synapse Studio
Regarding monitoring Spark activity to Azure Log Analytics, you can refer this monitor your Apache Spark
I hope this helps!