cloud-fan commented on code in PR #46273:
URL: https://github.com/apache/spark/pull/46273#discussion_r1592828452


##########
sql/core/src/test/scala/org/apache/spark/sql/execution/adaptive/AdaptiveQueryExecSuite.scala:
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@@ -2502,6 +2502,26 @@ class AdaptiveQueryExecSuite
     }
   }
 
+  test("SPARK-48037: Fix SortShuffleWriter lacks shuffle write related metrics 
" +
+    "resulting in potentially inaccurate data") {
+    withTable("t3") {
+      withSQLConf(
+        SQLConf.ADAPTIVE_EXECUTION_ENABLED.key -> "true",
+        SQLConf.SHUFFLE_PARTITIONS.key -> "16777217") {
+        sql("CREATE TABLE t3 USING PARQUET AS SELECT id FROM range(2)")
+        val (plan, adaptivePlan) = runAdaptiveAndVerifyResult(
+          """
+            |SELECT id, count(*)
+            |FROM t3
+            |GROUP BY id
+            |LIMIT 1
+            |""".stripMargin, skipCheckAnswer = true)

Review Comment:
   we can make it certain if the limit is larger than the number of result rows?



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