maropu commented on a change in pull request #30156:
URL: https://github.com/apache/spark/pull/30156#discussion_r512696243
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
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@@ -2748,6 +2748,16 @@ object SQLConf {
.checkValue(_ > 0, "The timeout value must be positive")
.createWithDefault(10L)
+ val LEGACY_SCRIPT_TRANSFORM_PAD_NULL =
+ buildConf("spark.sql.legacy.transformationPadNullWhenValueLessThenSchema")
+ .internal()
+ .doc("Whether pad null value when transformation output value size less
then schema size." +
+ "When true, we pad NULL value to keep same behavior with hive." +
+ "When false, we keep origin behavior")
Review comment:
Please describe what's `origin behavior` here, too.
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