Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/16664#discussion_r99520106
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -1047,4 +1047,14 @@ object StaticSQLConf {
"SQL configuration and the current database.")
.booleanConf
.createWithDefault(false)
+
+ val QUERY_EXECUTION_LISTENERS =
buildConf("spark.sql.queryExecutionListeners")
+ .doc("A comma-separated list of classes that implement
QueryExecutionListener. When creating " +
+ "a SparkSession, instances of these listeners will be added to it.
These classes " +
+ "needs to have a zero-argument constructor. If the specified class
can't be found or" +
+ " the class specified doesn't have a valid constructor the
SparkSession creation " +
+ "will fail with an exception.")
+ .stringConf
+ .toSequence
+ .createWithDefault(Nil)
--- End diff --
Not sure whether we should make it internal or external. Let the others
decide it. Either is fine to me.
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