Lei Sun created ORC-789:
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Summary: Supporting schema evolution for union expansion
Key: ORC-789
URL: https://issues.apache.org/jira/browse/ORC-789
Project: ORC
Issue Type: Improvement
Reporter: Lei Sun
Assignee: Lei Sun
We are seeing the following schema evolution occurred from time to time while
ORC library doesn't seem to support that:
{code:java}
Error: org.apache.orc.impl.SchemaEvolution$IllegalEvolutionException: ORC does
not support type conversion from file type uniontype<(obfuscated List of
columns),struct<correctPin:string,userInput:string>> to reader type
uniontype<(obfuscated List of
columns),struct<correctPin:string,userInput:string>,struct<version:string>>
{code}
We would like to add the support.
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