Share via

Why are Spark Pools 3.4 in Synapse Taking Twice as Long to Start Up?

Jesse Horn-Artera 0 Reputation points
2025-10-22T18:55:46.0866667+00:00

Why are Spark Pools 3.4 in Synapse Taking Twice as Long to Start Up?

Since 3.5 Preview all pools are taking longer to spin up. This is also happening with custom environments in Fabric.

Is this issue being worked on actively?

Azure Synapse Analytics
Azure Synapse Analytics
An Azure analytics service that brings together data integration, enterprise data warehousing, and big data analytics. Previously known as Azure SQL Data Warehouse.

1 answer

Sort by: Most helpful
Most helpful Newest Oldest
  1. Vinodh247 39,201 Reputation points MVP Volunteer Moderator
    2025-10-23T01:30:52.8+00:00

    Yes the issue is actively recognised and being tracked; but I don’t see a published fix date yet. The official “Known issues” page lists an active issue: “Starting a Spark session (with custom python libraries) is taking longer than usual.” under the Apache Spark pool component.

    https://free.blessedness.top/en-us/azure/synapse-analytics/known-issues?utm_source=chatgpt.com#starting-a-spark-session-with-custom-python-libraries-is-taking-longer-than-usual

    To know the ETA its better to raise a support ticket with MS

    Please 'Upvote'(Thumbs-up) and 'Accept' as answer if the reply was helpful. This will be benefitting other community members who face the same issue.

    1 person found this answer helpful.
    0 comments

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.