Ben Harkins created ARROW-18184:
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             Summary: [C++] Improve JSON parser benchmarks
                 Key: ARROW-18184
                 URL: https://issues.apache.org/jira/browse/ARROW-18184
             Project: Apache Arrow
          Issue Type: New Feature
          Components: C++
            Reporter: Ben Harkins
            Assignee: Ben Harkins


The current JSON parser benchmark suite is fairly limited, as it only really 
tests objects with a couple non-varying fields. To properly measure 
optimizations based on input predictability (i.e. 
[ARROW-4709|https://issues.apache.org/jira/browse/ARROW-4709]) it would be 
beneficial to provide a parameterized way to create schemas with an arbitrary 
number of fields and add benchmarks for input with randomly ordered/omitted 
fields.



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