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Commit 661c2104 authored by Wenchen Fan's avatar Wenchen Fan Committed by Davies Liu
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[SPARK-15381] [SQL] physical object operator should define reference correctly

## What changes were proposed in this pull request?

Whole Stage Codegen depends on `SparkPlan.reference` to do some optimization. For physical object operators, they should be consistent with their logical version and set the `reference` correctly.

## How was this patch tested?

new test in DatasetSuite

Author: Wenchen Fan <wenchen@databricks.com>

Closes #13167 from cloud-fan/bug.
parent 5c9117a3
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