Hongze Zhang created ARROW-13257:
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Summary: [Java][Dataset] Allow passing empty columns for projection
Key: ARROW-13257
URL: https://issues.apache.org/jira/browse/ARROW-13257
Project: Apache Arrow
Issue Type: Improvement
Components: Java
Affects Versions: 4.0.1
Reporter: Hongze Zhang
Assignee: Hongze Zhang
Projecting on empty columns (functionally like a pure metadata query on source
of data) was supported in C++ Dataset API in ARROW-11174. This is to align Java
API's behavior within C++.
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