luocooong commented on code in PR #2515:
URL: https://github.com/apache/drill/pull/2515#discussion_r851627884


##########
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/scan/v3/schema/MutableTupleSchema.java:
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@@ -173,7 +173,7 @@ public ColumnHandle insert(int posn, ColumnMetadata col) {
   }
 
   public ColumnHandle insert(ColumnMetadata col) {
-    return insert(insertPoint++, col);
+    return insert(insertPoint == -1 ? size() : insertPoint++, col);

Review Comment:
   When I fixed the following error, I received a new one : Dynamically create 
a repeated list field (and success) in next(), then this field may be assigned 
to the index value of -1.



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