Brian Hulette created ARROW-1652:
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             Summary: [JS] Batch hint for Vector.get
                 Key: ARROW-1652
                 URL: https://issues.apache.org/jira/browse/ARROW-1652
             Project: Apache Arrow
          Issue Type: Improvement
          Components: JavaScript
            Reporter: Brian Hulette


The {{Vector.get}} function just accepts an index, and looks up the appropriate 
record batch on every call. This can lead to a lot of additional lookups when 
iterating by index. It would be nice if {{Vector.get}} accepted an optional 
batch hint, similar to 
[{{Vector.range}}|https://github.com/apache/arrow/blob/master/js/src/vector/typed.ts#L51]

Additionally, if {{Table}} had some knowledge of the batches in it's Vectors, 
it could use this batch hint to improve performance when iterating over rows.



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