Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/20448#discussion_r164953600 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/DataSourceV2QueryPlan.scala --- @@ -19,50 +19,31 @@ package org.apache.spark.sql.execution.datasources.v2 import java.util.Objects -import org.apache.spark.sql.catalyst.expressions.{Attribute, AttributeReference} -import org.apache.spark.sql.sources.v2.reader._ +import org.apache.spark.sql.catalyst.expressions.{Attribute, AttributeSet, Expression} +import org.apache.spark.sql.sources.v2.DataSourceV2 /** - * A base class for data source reader holder with customized equals/hashCode methods. + * A base class for data source v2 related query plan. It defines the equals/hashCode methods + * according to some common information. --- End diff -- We might need to emphasize this is for both physical and logical plans.
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