eatoncys commented on issue #23010: [SPARK-26012][SQL]Null and '' values should not cause dynamic partition failure of string types URL: https://github.com/apache/spark/pull/23010#issuecomment-465429475 @cloud-fan I'm not very sure about that: the `child` plan is converted from the `query` plan. The code for generating and executing InsertIntoHadoopFsRelationCommand is as follows： def writeAndRead( mode: SaveMode, **data: LogicalPlan,** outputColumnNames: Seq[String], **physicalPlan: SparkPlan**): BaseRelation = { ... case format: FileFormat => **val cmd = planForWritingFileFormat(format, mode, _data_)** ... val resolved = cmd.copy( partitionColumns = resolvedPartCols, outputColumnNames = outputColumnNames) **resolved.run(sparkSession, _physicalPlan_)** InsertIntoHadoopFsRelationCommand is generated by planForWritingFileFormat, which using the `data` for `query` plan, and is executed by `resolved.run(sparkSession, physicalPlan)`, which using the `physicalPlan` for `child` plan. I'm not very sure, Is there anything wrong for me?
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