HyukjinKwon commented on a change in pull request #33894:
URL: https://github.com/apache/spark/pull/33894#discussion_r700706756



##########
File path: 
sql/catalyst/src/main/scala/org/apache/spark/sql/errors/QueryCompilationErrors.scala
##########
@@ -2333,7 +2333,12 @@ object QueryCompilationErrors {
   }
 
   def cannotModifyValueOfSparkConfigError(key: String): Throwable = {
-    new AnalysisException(s"Cannot modify the value of a Spark config: $key")
+    new AnalysisException(
+      s"""
+      |Cannot modify the value of a Spark config: $key,
+      |please set spark.sql.legacy.setCommandRejectsSparkCoreConfs as 'false' 
in
+      |order to make change value of Spark config: $key .

Review comment:
       We actually documented this in migration guide. Let's don't show the 
configuration in the error messages. We should ideally remove the legacy 
configurations out in the future, and should discoruage users to rely on these.

##########
File path: 
sql/core/src/test/scala/org/apache/spark/sql/internal/SQLConfSuite.scala
##########
@@ -319,6 +319,11 @@ class SQLConfSuite extends QueryTest with 
SharedSparkSession {
     assert(e2.message.contains("Cannot modify the value of a static config"))
   }
 
+  test("Cannot modify the value of a Spark config") {

Review comment:
       ```suggestion
     test("SPARK-36643: Cannot modify the value of a Spark config") {
   ```




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