Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/21815#discussion_r203679895 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/DataSourceScanExec.scala --- @@ -166,10 +166,10 @@ case class FileSourceScanExec( override val tableIdentifier: Option[TableIdentifier]) extends DataSourceScanExec with ColumnarBatchScan { - override val supportsBatch: Boolean = relation.fileFormat.supportBatch( + override lazy val supportsBatch: Boolean = relation.fileFormat.supportBatch( relation.sparkSession, StructType.fromAttributes(output)) - override val needsUnsafeRowConversion: Boolean = { + override lazy val needsUnsafeRowConversion: Boolean = { if (relation.fileFormat.isInstanceOf[ParquetSource]) { SparkSession.getActiveSession.get.sessionState.conf.parquetVectorizedReaderEnabled --- End diff -- Let's leave this out of this PR's scope. That's more like making the plan workable whereas this PR targets the plan can be canonicalized.
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