Matt McCline created ORC-380:
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Summary: Add isOnlyImplicitConversion boolean function to
SchemaEvolution
Key: ORC-380
URL: https://issues.apache.org/jira/browse/ORC-380
Project: ORC
Issue Type: Bug
Components: ORCv2
Reporter: Matt McCline
Assignee: Matt McCline
The current hasConversion boolean function returns true if there is *any*
conversion between the reader and file schemas. Prasanth pointed out this is
too strict for the check I'm adding in HIVE-19951: "Vectorization: Need to
disable encoded LLAP I/O for ORC when there is data type conversion (Schema
Evolution)". He points out that integer type widening and float to double
ought to be allowed.
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