topic How do I know how much of a query/job used Photon? in Data Engineering

How do I know how much of a query/job used Photon?

cgrant — Wed, 09 Jun 2021 22:12:47 GMT

I'm trying to use the native execution engine, Photon. How can I tell if a query is using Photon or is falling back to the non-native Spark engine?

Re: How do I know how much of a query/job used Photon?

sajith_appukutt — Wed, 23 Jun 2021 07:28:02 GMT

If you are using Photon on Databricks SQL

Click the Query History icon on the sidebar.
Click the line containing the query you’d like to analyze.
On the Query Details pop-up, click Execution Details.
Look at the Task Time in Photon metric at the bottom.

Re: How do I know how much of a query/job used Photon?

venkat09 — Fri, 20 Jan 2023 01:39:31 GMT

Tasks covered by yellow shade on DAG differentiate the operators are executed within photon engine
Also, if you clean the plan of your task, it explains well in detail what the operations run in the photon engine and what cannot be executed within it.

Re: How do I know how much of a query/job used Photon?

JacekLaskowski — Sat, 21 Jan 2023 14:36:01 GMT

Can you explain what's "clean the plan of your task"? Thanks.

Re: How do I know how much of a query/job used Photon?

venkat09 — Sun, 22 Jan 2023 01:05:52 GMT

Typo error in my second point of the previous post. Click the execution plan of your task[this is available under SQL/Dataframe tab in Spark UI]. It explains what operations run in the photon engine and what didn't execute by photon.