[GitHub] [spark] dongjoon-hyun commented on a diff in pull request #37386: [SPARK-39958][SQL] Add warning log when unable to load custom metric object

[GitBox <gi...@apache.org>]

dongjoon-hyun commented on code in PR #37386:
URL: https://github.com/apache/spark/pull/37386#discussion_r936202134


##########
sql/core/src/main/scala/org/apache/spark/sql/execution/ui/SQLAppStatusListener.scala:
##########
@@ -220,7 +220,10 @@ class SQLAppStatusListener(
             metricAggregationMap.put(className, method)
             method
           } catch {
-            case NonFatal(_) =>
+            case NonFatal(e) =>
+              logWarning(s"Unable to load custom metric object for class `$className`. " +
+                "Please make sure that the custom metric class is in the classpath and " +
+                "it has 0-arg constructor", e)

Review Comment:
   nit. `.` at the end of the sentence?



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