Cheng's comments.

Author: yhuai

sql/core/src/main/scala/org/apache/spark/sql/parquet/newParquet.scala

@@ -120,7 +120,7 @@ private[sql] class ParquetRelation2(
     private val maybeDataSchema: Option[StructType],
     private val maybePartitionSpec: Option[PartitionSpec],
     parameters: Map[String, String])(
-    @transient val sqlContext: SQLContext)
+    val sqlContext: SQLContext)
   extends HadoopFsRelation(maybePartitionSpec)
   with Logging {
 

sql/core/src/main/scala/org/apache/spark/sql/sources/interfaces.scala

@@ -608,10 +608,10 @@ abstract class HadoopFsRelation private[sql](maybePartitionSpec: Option[Partitio
    * @since 1.4.0
    */
   def buildScan(
-    requiredColumns: Array[String],
-    filters: Array[Filter],
-    inputFiles: Array[FileStatus],
-    broadcastedConf: Broadcast[SerializableWritable[Configuration]]): RDD[Row] = {
+      requiredColumns: Array[String],
+      filters: Array[Filter],
+      inputFiles: Array[FileStatus],
+      broadcastedConf: Broadcast[SerializableWritable[Configuration]]): RDD[Row] = {
     buildScan(requiredColumns, filters, inputFiles)
   }