MaxGekk commented on code in PR #45095:
URL: https://github.com/apache/spark/pull/45095#discussion_r1495711840


##########
common/utils/src/main/resources/error/error-classes.json:
##########
@@ -3748,6 +3748,12 @@
     },
     "sqlState" : "0A000"
   },
+  "UNSUPPORTED_ENCODER" : {
+    "message" : [
+      "Found unsupported encoder. Try switching to expression encoder."

Review Comment:
   nit:
   ```suggestion
         "Found unsupported encoder. Try switching to an expression encoder."
   ```



##########
common/utils/src/main/resources/error/error-classes.json:
##########
@@ -3748,6 +3748,12 @@
     },
     "sqlState" : "0A000"
   },
+  "UNSUPPORTED_ENCODER" : {
+    "message" : [
+      "Found unsupported encoder. Try switching to expression encoder."
+    ],
+    "sqlState" : "0A000"

Review Comment:
   The category `0A` belongs to:
   ```
       "0A": "feature not supported",
   ```
   see `error-categories.json`. Any reasons to choose this one? How about `46` 
or `42`?



##########
common/utils/src/main/resources/error/error-classes.json:
##########
@@ -3748,6 +3748,12 @@
     },
     "sqlState" : "0A000"
   },
+  "UNSUPPORTED_ENCODER" : {
+    "message" : [
+      "Found unsupported encoder. Try switching to expression encoder."

Review Comment:
   I think we should help users and point out how to switch to an expression 
encoder. At least, let's point out the doc:
   
https://spark.apache.org/docs/latest/api/java/index.html?org/apache/spark/sql/Encoder.html



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