Gang Wu created ORC-1376:
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Summary: [C++] Support schema evolution
Key: ORC-1376
URL: https://issues.apache.org/jira/browse/ORC-1376
Project: ORC
Issue Type: New Feature
Components: C++
Reporter: Gang Wu
The Java ORC reader supports schema evolution by comparing readSchema with
fileSchema [1] and creates a set of ConvertTreeReaders [2] to do the conversion.
[1]
https://github.com/apache/orc/blob/main/java/core/src/java/org/apache/orc/impl/SchemaEvolution.java
[2]
https://github.com/apache/orc/blob/main/java/core/src/java/org/apache/orc/impl/ConvertTreeReaderFactory.java#L60:14
The C++ reader does not support it yet.
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