Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/16579#discussion_r97240285
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala
---
@@ -982,6 +982,28 @@ class SQLQuerySuite extends QueryTest with
SharedSQLContext {
spark.sessionState.conf.clear()
}
+ test("SPARK-19218 Fix SET command to show a result correctly and in a
sorted order") {
+ val overrideConfs = sql("SET").collect()
+ sql(s"SET test.key3=1")
+ sql(s"SET test.key2=2")
+ sql(s"SET test.key1=3")
+ val result = sql("SET").collect()
+ assert(result ===
+ (overrideConfs ++ Seq(
+ Row("test.key1", "3"),
+ Row("test.key2", "2"),
+ Row("test.key3", "1"))).sortBy(_.getString(0))
+ )
+
+ // Previsouly, `SET -v` fails with NPE during decoding for null value.
+ import SQLConf._
+
SQLConfigBuilder("spark.test").doc("doc").stringConf.createWithDefault(null)
+
+ val result2 = sql("SET -v").collect()
+ assert(result2 === result2.sortBy(_.getString(0)))
+ spark.sessionState.conf.clear()
--- End diff --
This will not drop the `spark.test`. We need to introduce a function for
testing only
```Scala
// For testing only
private[sql] def unregister(entry: ConfigEntry[_]): Unit =
sqlConfEntries.synchronized {
sqlConfEntries.remove(entry.key)
}
```
Create a separate test case; then call the following code in a finally
block: `SQLConf.unregister(confEntry)`
Will be back after a few hours.
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