Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/20020#discussion_r158341954
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/DataWritingCommand.scala
---
@@ -20,30 +20,32 @@ package org.apache.spark.sql.execution.command
import org.apache.hadoop.conf.Configuration
import org.apache.spark.SparkContext
-import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
+import org.apache.spark.sql.{Row, SparkSession}
+import org.apache.spark.sql.catalyst.expressions.Attribute
+import org.apache.spark.sql.catalyst.plans.logical.{AnalysisBarrier,
Command, LogicalPlan}
--- End diff --
`AnalysisBarrier ` is not needed any more.
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