David Mollitor created HADOOP-17494:
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Summary: Make ProtobufRpcEngineProtos and ProtobufRpcEngineProtos2
Co-Exist
Key: HADOOP-17494
URL: https://issues.apache.org/jira/browse/HADOOP-17494
Project: Hadoop Common
Issue Type: Improvement
Reporter: David Mollitor
Assignee: David Mollitor
Changing from Protobuf 2 to Protobuf 3 broke some stuff in Apache Hive project.
This was not an awesome thing to do between minor versions in regards to
backwards compatibility for downstream projects.
Additionally, these two frameworks are not drop-in replacements, they have some
differences. Also, Protobuf 2 is not deprecated or anything so let us have
both protocols available at the same time. In Hadoop 4.x Protobuf 2 support
can be dropped.
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