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https://issues.apache.org/jira/browse/ARROW-590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16254028#comment-16254028
 ] 

ASF GitHub Bot commented on ARROW-590:
--------------------------------------

icexelloss commented on a change in pull request #987: ARROW-590: Add 
integration tests for Union types
URL: https://github.com/apache/arrow/pull/987#discussion_r151231251
 
 

 ##########
 File path: java/vector/src/main/codegen/templates/UnionVector.java
 ##########
 @@ -269,12 +373,14 @@ public void clear() {
   public Field getField() {
     List<org.apache.arrow.vector.types.pojo.Field> childFields = new 
ArrayList<>();
     List<FieldVector> children = internalMap.getChildren();
-    int[] typeIds = new int[children.size()];
     for (ValueVector v : children) {
-      typeIds[childFields.size()] = v.getMinorType().ordinal();
 
 Review comment:
   @jacques-n This is the code I am referring to that assumes type id is the 
value of the enum MinorType rather than typeIds in the schema. 

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> Add integration tests for Union types
> -------------------------------------
>
>                 Key: ARROW-590
>                 URL: https://issues.apache.org/jira/browse/ARROW-590
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: C++, Java - Vectors
>            Reporter: Wes McKinney
>            Assignee: Li Jin
>              Labels: pull-request-available
>             Fix For: 0.9.0
>
>




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