[GitHub] [spark] dbtsai commented on a change in pull request #23943: [SPARK-27034][SQL] Nested schema pruning for ORC

[GitBox <gi...@apache.org>]

dbtsai commented on a change in pull request #23943: [SPARK-27034][SQL] Nested schema pruning for ORC
URL: https://github.com/apache/spark/pull/23943#discussion_r358524723
 
 

 ##########
 File path: sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
 ##########
 @@ -1541,8 +1541,8 @@ object SQLConf {
       .internal()
       .doc("Prune nested fields from a logical relation's output which are unnecessary in " +
         "satisfying a query. This optimization allows columnar file format readers to avoid " +
-        "reading unnecessary nested column data. Currently Parquet is the only data source that " +
-        "implements this optimization.")
+        "reading unnecessary nested column data. Currently Parquet and ORC v1 are the " +
+        "data sources that implement this optimization.")
       .booleanConf
       .createWithDefault(false)
 
 Review comment:
   We mainly use it and test it with Parquet.

----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
users@infra.apache.org


With regards,
Apache Git Services

---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscribe@spark.apache.org
For additional commands, e-mail: reviews-help@spark.apache.org