Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/23031#discussion_r237075170
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/RuntimeConfigSuite.scala ---
@@ -68,4 +68,13 @@ class RuntimeConfigSuite extends SparkFunSuite {
assert(!conf.isModifiable(""))
assert(!conf.isModifiable("invalid config parameter"))
}
+
+ test("reject SparkConf entries") {
+ val conf = newConf()
+
+ val ex = intercept[AnalysisException] {
+ conf.set("spark.task.cpus", 4)
--- End diff --
can we use `config.CPUS_PER_TASK` instead of hardcoding it?
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