vy commented on code in PR #3586:
URL: https://github.com/apache/logging-log4j2/pull/3586#discussion_r2044006120


##########
log4j-layout-template-json/src/main/resources/GcpLayout.json:
##########
@@ -49,25 +55,15 @@
     "key": "span_id"
   },
   "logging.googleapis.com/trace_sampled": true,
-  "_exception": {
-    "class": {
-      "$resolver": "exception",
-      "field": "className"
-    },
-    "message": {
-      "$resolver": "exception",
-      "field": "message"
-    },
-    "stackTrace": {
-      "$resolver": "pattern",
-      "pattern": "%xEx"
-    }
+  "exception": {
+    "$resolver": "pattern",
+    "pattern": "%xEx"
   },

Review Comment:
   > I also tried to use `exception` resolver but it produces just a stack 
trace without header
   
   @ViliusS, could you elaborate on this, please? What does _"a stack trace 
without header"_ mean? Can you provide a test that we can reproduce the problem 
on our side?
   
   As we stated in JTL docs, falling back to Pattern Layout should be a last 
resort. In the case of exception rendering, ideally, one should never need to 
fallback to PL.
   



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