Databricks Community

Malthe

We're getting intermittent errors:[ISOLATION_STARTUP_FAILURE.SANDBOX_STARTUP] Failed to start isolated execution environment. Sandbox startup failed. Exception class: INTERNAL. Exception message: INTERNAL: LaunchSandboxRequest create failed - Error e...

Malthe

If we set up a materialized view with a clustering key, and then update the definition such that this key is no longer part of the table, Databricks complains:Run ALTER TABLE ... CLUSTER BY ... to repair Delta clustering metadata.But this is not poss...

Malthe · 12-13-2025

We're experiencing connectivity issues between Power BI (refreshing a dataset) and Databricks.On the Databricks side, we're using a SQL Warehouse (serverless), which reports queries timing out:Query has been timed out due to inactivity.On the Power B...

Malthe · 10-17-2025

Using create_streaming_table and passing table properties as follows, I get an error running the pipeline for the first time:> Your table schema requires manually enablement of the following table feature(s): variantType-preview.I'm using this code:c...

Malthe · 09-11-2025

We've been using auto loader to ingest data from a storage account on Azure (format "cloudFiles").Today, we're starting to see failures during the setup of event notification:25/09/11 19:06:28 ERROR MicroBatchExecution: Non-interrupted exception thro...

Malthe

@adriennn this has nothing to do with DLT, but about Databricks providing a different session implementation here than regular Spark.

Malthe

Regarding the mistake of creating extremely wide tables (100+ columns), as long as you don't include all of those columns in a query, Spark shouldn't run into the "spark.sql.codegen.maxFields" limit.

Malthe

According to https://learn.microsoft.com/en-us/azure/databricks/release-notes/serverless/, 17.3 is the latest release for serverless and we're on Serverless Environment 4.Here's the trackback:File /databricks/python/lib/python3.12/site-packages/pyspa...

Malthe · 12-16-2025

This is the capacity in Power BI:In the timeframe where we had connectivity issues, the capacity was plenty, but also we can see how the interaction was:Queries were executed fine by Databricks, taking the normal amount of time (from query history);S...

Malthe · 12-14-2025

For reference, the issue began at 13/12/2025, 02:43 UTC, and ended (last failure) at 19:43 UTC, 17 hours later.We did nothing to alleviate the issue and the SQL Warehouse seemed to operate normally except when the issue began and concluded when there...

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Intermittent task execution issues

Unable to update DLT-based materialized view if clustering key is missing

Intermittent connectivity issues between Power BI and Databricks

Can't enable "variantType-preview" using DLTs

Intermittent failures with auto loader on Azure

Re: Parameterized spark.sql() not working

Re: Top 10 code mistakes that degrade your Spark performance

Re: Intermittent task execution issues

Re: Intermittent connectivity issues between Power BI and Databricks

Re: Intermittent connectivity issues between Power BI and Databricks