Pindikura Ravindra created ARROW-5484:
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             Summary: [Java] remove FieldReader from ValueVector
                 Key: ARROW-5484
                 URL: https://issues.apache.org/jira/browse/ARROW-5484
             Project: Apache Arrow
          Issue Type: Task
          Components: Java
            Reporter: Pindikura Ravindra
            Assignee: Pindikura Ravindra


Every implementation of ValueVector has an instance of .FieldReader, which has 
an overhead of 28 bytes on the heap. This can be avoided by instantiating the 
object only when required.



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