Please support JDBC connection to Synapse Spark Pool.

Delta lake v0.6.1 doesn't support much of the ACID functionality. It would be great to upgrade the delta lake version and Spark version to utilize functionality as supported by data bricks.

Need %pip installer within the workspace notebook, so we can install libraries as needed immediately

It would be good to have some spark utilities as already available in databricks, like executing one notebook from another notebook and passing it parameters.

Example:
dbutils.notebooks.run('NotebookName', 3600, parameters)

This is very needed to have a dynamic notebook which can trigger the execution of another notebook.

Currently, an entire new cluster is spun for every user who starts an Apache Spark session using Notebooks. Please add the ability to share a single physical cluster across multiple users. Spinning up a new cluster (with a minimum of 3 nodes) for every user is very expensive.

Allow private hosted pip repositories in Synapse,
private packages are commonly used and currently, the workaround of copying all the code is pretty obnoxious

My customer needs access to their secrets stored in Azure Key Vault from within a Spark notebook. These credentials are used to access their cognitive services keys in order to complete their data engineering process. The libraries installed in Synapse conflicts with the documentation provided by Key Vault.

https://docs.microsoft.com/en-us/azure/key-vault/secrets/quick-create-python?tabs=cmd

Please support the ability to connect Spark pool to Power BI by exposing the cluster connection information for Spark pool.

Currently, Spark data needs to be loaded into a different data source such as Azure SQL Data Warehouse (ADW) before Power BI can use the data.

However, Power BI has the capability to connect to Spark (https://docs.microsoft.com/en-us/azure/databricks/integrations/bi/power-bi#step-2-get-azure-databricks-connection-information).

Adding ADW as an intermediate step from Spark to Power BI just adds unnecessary delay in syncing the data between Spark and ADW.

Potentially relevant discussion post: https://feedback.azure.com/forums/307516-azure-synapse-analytics/suggestions/40706374-jdbc-connection-to-spark-pool

We would like to host a notebook service on top of Azure Synapse Analytics, with a custom frontend.

This requires the possibility of connecting the notebook to a Python-kernel running in a remote Azure Spark instance.

According to the answer provided here in the Microsoft forums, this is currently not available.

https://docs.microsoft.com/en-us/answers/questions/165607/connecting-a-notebook-remotely-to-an-azure-spark-p.html

Today I'm getting an error message across multiple tenant workspaces (tested to make sure it wasn't a setup issue) when trying to start spark clusters, "Failed to start cluster:". Doesn't really help identify what the issue might be. Last week I received an error "CLUSTERINTERMINALSTATEBEFORE_READY". Neither of them very useful, and both of them resolved on their own after waiting a while.

Better error reporting, maybe some documentation of common errors and resolution, and some stability on the MS backend would go a long way to increase adoption.

support wheel distribution azure data bricks currently support these:

https://pythonwheels.com/

I would like to be able to use custom credentials when authenticating to ADLS or ABS when I'm writing out Spark dataframes out to those locations. This is a feature in Databricks as shown here (https://docs.databricks.com/data/data-sources/azure/azure-datalake.html). Right now, when I write out spark dataframes in Azure Synapse with Spark on Cosmos, it defaults to using my user credentials but there are scenarios where I would want to use a service principal. This feature would be for those scenarios.

Ipython supports the use of the %run magic to run notebooks from within a notebook... having this support in the synapse spark environment would unblock migration from other environments