Jacek Laskowski
Jacek Laskowski

Reputation: 74619

When would physical operator (e.g. LocalTableScanExec) show no SQL metrics in web UI?

Compare the following structured queries and their execution plans in web UI.

I use the same dataset for two different queries.

val names = Seq("Jacek").toDF("name")

The following basic query has no SQL metrics in web UI

names.show

enter image description here

Surprisingly the query has number of output rows metric.

names.count

enter image description here

Why?

Upvotes: 1

Views: 184

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