Colin Patrick McCabe created HDFS-6161:
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Summary: fix HDFS protobuf namespace conflicts
Key: HDFS-6161
URL: https://issues.apache.org/jira/browse/HDFS-6161
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode, namenode
Reporter: Colin Patrick McCabe
Priority: Minor
HDFS currently puts multiple protobuf definitions with the same name in the
same protobuf namespace.
For example, {{QJournalProtocol}} defines {{HeartbeatRequestProto}} in package
{{hadoop.hdfs}}, but DatanodeProtocol also defines something different, also
called {{HeartbeatRequestProto}} and also in package {{hadoop.hdfs}}.
This isn't an issue in Java because the java PB compiler seems to disregard the
PB namespaces, putting the generated {{QJournalProtocolProtos.java}} file in
package {{org.apache.hadoop.hdfs.qjournal.protocol}} and the DN one in a
different java namespace. However, it is an issue when creating protobuf
bindings in other languages.
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