== Parsed Logical Plan ==
GlobalLimit 21
+- LocalLimit 21
+- Project [cast(hostname#134 as string) AS hostname#140, cast(correct_count#135L as string) AS correct_count#141]
+- LocalRelation [hostname#134, correct_count#135L]
== Analyzed Logical Plan ==
hostname: string, correct_count: string
GlobalLimit 21
+- LocalLimit 21
+- Project [cast(hostname#134 as string) AS hostname#140, cast(correct_count#135L as string) AS correct_count#141]
+- LocalRelation [hostname#134, correct_count#135L]
== Optimized Logical Plan ==
LocalRelation [hostname#140, correct_count#141]
== Physical Plan ==
LocalTableScan [hostname#140, correct_count#141]