gengliangwang commented on code in PR #50571:
URL: https://github.com/apache/spark/pull/50571#discussion_r2040354852


##########
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala:
##########
@@ -5260,6 +5260,15 @@ object SQLConf {
     .booleanConf
     .createWithDefault(false)
 
+  val READ_DATA_SOURCE_LEGACY_IGNORE_OPTIONS =
+    buildConf("spark.sql.legacy.readDataSourceIgnoreOptions")
+      .internal()
+      .doc("When set to true, reading from file data source caches the first 
query plan and " +
+        "ignores subsequent changes in query options, e.g. delimiters.")

Review Comment:
   mention `delimiters` option for csv tables



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