[GitHub] [spark] cloud-fan commented on a change in pull request #26977: [SPARK-30326][SQL] Raise exception if analyzer exceed max iterations

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cloud-fan commented on a change in pull request #26977: [SPARK-30326][SQL] Raise exception if analyzer exceed max iterations
URL: https://github.com/apache/spark/pull/26977#discussion_r376864785
 
 

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 File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/rules/RuleExecutor.scala
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 @@ -155,8 +168,14 @@ abstract class RuleExecutor[TreeType <: TreeNode[_]] extends Logging {
         if (iteration > batch.strategy.maxIterations) {
           // Only log if this is a rule that is supposed to run more than once.
           if (iteration != 2) {
-            val message = s"Max iterations (${iteration - 1}) reached for batch ${batch.name}"
-            if (Utils.isTesting) {
+            val message = batch.strategy.maxIterationsSetting match {
+              case setting: String if setting != null =>
+                s"Max iterations (${iteration - 1}) reached for batch ${batch.name}, " +
+                  s"increasing the value of '${setting}'."
 
 Review comment:
   nit: `please set '${setting}' to a larget value`

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