address comments

Author: cloud-fan

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/QueryPlan.scala

@@ -391,7 +391,7 @@ abstract class QueryPlan[PlanType <: QueryPlan[PlanType]] extends TreeNode[PlanT
 
   /**
    * Do some simple transformation on this plan before canonicalizing. Implementations can override
-   * this method to provide customer canonicalize logic without rewriting the whole logic.
+   * this method to provide customized canonicalize logic without rewriting the whole logic.
    */
   protected def preCanonicalized: PlanType = this
 

sql/core/src/main/scala/org/apache/spark/sql/execution/DataSourceScanExec.scala

@@ -265,7 +265,7 @@ case class FileSourceScanExec(
     val metadata =
       Map(
         "Format" -> relation.fileFormat.toString,
-        "requiredSchema" -> requiredSchema.catalogString,
+        "ReadSchema" -> requiredSchema.catalogString,
         "Batched" -> supportsBatch.toString,
         "PartitionFilters" -> seqToString(partitionFilters),
         "PushedFilters" -> seqToString(pushedDownFilters),