arina-ielchiieva commented on a change in pull request #2051: DRILL-7696: EVF 
v2 scan schema resolution
URL: https://github.com/apache/drill/pull/2051#discussion_r407074521
 
 

 ##########
 File path: 
exec/vector/src/main/java/org/apache/drill/exec/record/metadata/AbstractColumnMetadata.java
 ##########
 @@ -295,6 +285,8 @@ public String toString() {
         .toString();
   }
 
+  protected void appendContents(StringBuilder buf) { }
+
   @JsonProperty("type")
   @Override
   public String typeString() {
 
 Review comment:
   Better make this abstract since all columns which implement this, must 
ensure parser can parse string back to type.

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