cloud-fan commented on a change in pull request #30154:
URL: https://github.com/apache/spark/pull/30154#discussion_r517837665



##########
File path: 
external/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/v2/V2JDBCTest.scala
##########
@@ -146,5 +158,25 @@ private[v2] trait V2JDBCTest extends SharedSparkSession {
     }.getMessage
     assert(msg.contains("Table not found"))
   }
+
+  test("CREATE TABLE with table comment") {
+    withTable(s"$catalogName.new_table") {
+      val logAppender = new LogAppender("table comment")
+      withLogAppender(logAppender) {
+        sql(s"CREATE TABLE $catalogName.new_table(i INT) USING _ COMMENT 'this 
is a comment'")
+      }
+      val createCommentWarning = logAppender.loggingEvents
+        .filter(_.getLevel == Level.WARN)
+        .map(_.getRenderedMessage)
+        .exists(_.contains("Cannot create JDBC table comment"))

Review comment:
       No DB supports it?




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