andygrove commented on code in PR #506:
URL: https://github.com/apache/datafusion-comet/pull/506#discussion_r1677978125


##########
spark/src/main/scala/org/apache/comet/serde/QueryPlanSerde.scala:
##########
@@ -1703,18 +1703,21 @@ object QueryPlanSerde extends Logging with 
ShimQueryPlanSerde with CometExprShim
               optExprWithInfo(optExpr, expr, child)
           }
 
+        /// The expression for `log` functions is defined as  null on numbers 
less than or equal
+        /// to 0.  This matches Spark and Hive behavior, where non positive 
values eval to null
+        /// instead of NaN or -Infinity

Review Comment:
   CI is failing with scalastyle error `Insert a space after the start of the 
comment` for these lines. Changing `///` to `//` should resolve it.
   
   ```suggestion
           // The expression for `log` functions is defined as  null on numbers 
less than or equal
           // to 0.  This matches Spark and Hive behavior, where non positive 
values eval to null
           // instead of NaN or -Infinity
   ```



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