Add ability to include Protobufs in ObjectWritable
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Key: HADOOP-7379
URL: https://issues.apache.org/jira/browse/HADOOP-7379
Project: Hadoop Common
Issue Type: Improvement
Components: io, ipc
Affects Versions: 0.23.0
Reporter: Todd Lipcon
Assignee: Todd Lipcon
Fix For: 0.23.0
Per HDFS-2060, it would make it easier to piecemeal switch to protocol buffer
based data structures in the wire protocol if we could intermix the two. The
IPC framework currently provides the concept of "engines" for RPC, but that
doesn't easily allow mixed types within the same framework for ease of
transition.
I'd like to add the cases to ObjectWritable to be handle subclasses of
{{Message}}, the superclass of codegenned protobufs.
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