Mouli Mukherjee created PARQUET-1464:
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Summary: Not able to do backwards compatible projection
Key: PARQUET-1464
URL: https://issues.apache.org/jira/browse/PARQUET-1464
Project: Parquet
Issue Type: Bug
Components: parquet-mr
Reporter: Mouli Mukherjee
Currently the following scenarios fail while using projections. This makes it
hard to do backwards compatible schema changes like adding an optional field or
making a required field optional.
1. Adding an optional field to an existing thrift schema and making it part of
the projection for reading data written using older thrift.
2. Projecting a required field using optional.
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