Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/20020#discussion_r158018917
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/DataWritingCommand.scala
---
@@ -57,4 +45,8 @@ trait DataWritingCommand extends RunnableCommand {
val serializableHadoopConf = new SerializableConfiguration(hadoopConf)
new BasicWriteJobStatsTracker(serializableHadoopConf, metrics)
}
+
+ def run(sparkSession: SparkSession, children: Seq[SparkPlan]): Seq[Row]
= {
+ throw new NotImplementedError
--- End diff --
shall we force all sub-classes to implement it?
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