Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/19974#discussion_r157026037
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/internal/SQLConfSuite.scala ---
@@ -280,4 +280,34 @@ class SQLConfSuite extends QueryTest with
SharedSQLContext {
spark.sessionState.conf.clear()
}
+
+ test("SPARK-22779: correctly compute default value for fallback
configs") {
+ val fallback = SQLConf.buildConf("spark.sql.__test__.spark_22779")
+ .fallbackConf(SQLConf.PARQUET_COMPRESSION)
--- End diff --
It's true no existing config uses this, but Reynold was trying to fix this
so my guess is he's trying to add one and it wasn't working as expected.
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