Github user chenghao-intel commented on a diff in the pull request: https://github.com/apache/spark/pull/3780#discussion_r22278489 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala --- @@ -199,11 +199,15 @@ private[sql] abstract class SparkStrategies extends QueryPlanner[SparkPlan] { object ParquetOperations extends Strategy { def apply(plan: LogicalPlan): Seq[SparkPlan] = plan match { // TODO: need to support writing to other types of files. Unify the below code paths. - case logical.WriteToFile(path, child) => + case logical.WriteToFile(path, child, overwrite) => val relation = - ParquetRelation.create(path, child, sparkContext.hadoopConfiguration, sqlContext) - // Note: overwrite=false because otherwise the metadata we just created will be deleted - InsertIntoParquetTable(relation, planLater(child), overwrite = false) :: Nil + ParquetRelation.createEmpty( --- End diff -- It should be safe, as we believe the logical plan has been resolved already during the analysis phase.
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