vrozov commented on a change in pull request #1383: DRILL-6613: Refactor 
MaterializedField
URL: https://github.com/apache/drill/pull/1383#discussion_r203752120
 
 

 ##########
 File path: 
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/HashJoinBatch.java
 ##########
 @@ -792,7 +792,7 @@ private void setupOutputContainerSchema() {
         }
 
         // make sure to project field with children for children to show up in 
the schema
-        final MaterializedField projected = field.withType(outputType);
+        final MaterializedField projected = field.copy(outputType);
 
 Review comment:
   In such case one of the `copy` should be named `copyWithNameAndType`. As 
parameters already provide a hint that `name` and/or `type` will be changed I 
don't see much need to use the method name for the same.

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