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Significant Delay in Deploying View on Unity Catalog Compared to Hive Metastore

dnz
New Contributor

‎07-31-2024 08:03 AM

Hi everyone,

I'm experiencing a significant delay when deploying a view in the Unity Catalog compared to the Hive Metastore. Specifically, the deployment on the Unity Catalog takes 20 to 30 minutes, whereas the same deployment on the Hive Metastore completes within seconds.


Details:

  • Deployment Time in Unity Catalog: 20-30 minutes
  • Deployment Time in Hive Metastore: Seconds
  • Underlying Table: External table in S3 (not a Delta table)

My Questions:

  1. Does Databricks internally scan the entire data before deploying a view in the Unity Catalog? if it does, then is this a new feature of UC and is there anyway to skip this step ?
  2. Are there any specific configurations or optimizations needed for deploying views on Unity Catalog that could reduce the deployment time?

Any insights or suggestions would be greatly appreciated. Thank you!

Regards,
Dains

 

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