Paul Taylor created ARROW-3337:
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Summary: JS writer doesn't serialize the dictionary of nested
Vectors
Key: ARROW-3337
URL: https://issues.apache.org/jira/browse/ARROW-3337
Project: Apache Arrow
Issue Type: Improvement
Components: JavaScript
Affects Versions: JS-0.3.1
Reporter: Paul Taylor
Assignee: Paul Taylor
Fix For: JS-0.4.0
The JS writer only serializes dictionaries for [top-level
children|https://github.com/apache/arrow/blob/ee9b1ba426e2f1f117cde8d8f4ba6fbe3be5674c/js/src/ipc/writer/binary.ts#L40]
of a Table. This is wrong, and an oversight on my part. The fix here is to put
the actual Dictionary vectors in the `schema.dictionaries` map instead of the
dictionary fields, like I understand the C++ does.
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