Wes McKinney created ARROW-5982:
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Summary: [C++] Add methods to append dictionary values and
dictionary indices directly into DictionaryBuilder
Key: ARROW-5982
URL: https://issues.apache.org/jira/browse/ARROW-5982
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Wes McKinney
Fix For: 1.0.0
In scenarios where a developer has an array of dictionary indices already that
reference a known dictionary, it is useful to be able to insert the indices
directly, circumventing the hash table lookup. The developer will be
responsible for keeping things consistent
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