How can I use lakehouse monitoring correctly?

[Yuki]

I want to try Lakehouse monitoring in Unity Catalog.
But it was failed in three table patterns.

All of the drift metrics and profile metrics are No Data.

I used the sample data "nyc taxi trips"

And I configured the details like the following image.

[koji_kawamura · Accepted solution]

Hi @Yuki 

The reason you cannot see anything in the result tables is that Lakehouse monitoring only analyzes data from 30 days before its creation. Please try using a source table that has more recent timestamps.

When you first create a time series or inference profile, the monitor analyzes only data from the 30 days prior to its creation. After the monitor is created, all new data is processed.

https://docs.databricks.com/aws/en/lakehouse-monitoring/create-monitor-ui

[Yuki]

Hi @koji_kawamura ,

Thank you for your prompt reply.
I'm sorry I missed to read that.

As you said, I changed the time columns recently 30 days, it has worked well.

I could understand better about it and avoid misunderstanding.

Thank you so much, I will try to utilize it.