Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/14957#discussion_r84422485
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -212,6 +212,11 @@ object SQLConf {
.booleanConf
.createWithDefault(true)
+ val PARQUET_NEST_COLUMN_PRUNING =
SQLConfigBuilder("spark.sql.parquet.nestColumnPruning")
+ .doc("When set this to true, we will tell parquet only read the nest
column`s leaf fields ")
--- End diff --
Please reword this doc string to:
> When true, Parquet column pruning also works for nested fields.
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