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Arpit Agarwal commented on HDFS-4866: ------------------------------------- Hi Chris, Thanks for taking a look. I don't know of a way to avoid the backward incompatibility either. Note that this is the inter-namenode protocol so it should not affect older clients. > Protocol buffer support cannot compile under C > ---------------------------------------------- > > Key: HDFS-4866 > URL: https://issues.apache.org/jira/browse/HDFS-4866 > Project: Hadoop HDFS > Issue Type: Bug > Affects Versions: 3.0.0, 2.1.0-beta > Reporter: Ralph Castain > Assignee: Arpit Agarwal > Priority: Blocker > Attachments: HDFS-4866.branch-2.001.patch, HDFS-4866.trunk.001.patch, > NamenodeProtocol.pb-c.c, NamenodeProtocol.pb-c.h, pcreate.pl > > > When compiling Hadoop's .proto descriptions for use in C, an error occurs > because one of the RPC's in NamenodeProtocol.proto is named "register". This > name is a reserved word in languages such as C. When using the Java and C++ > languages, the name is hidden inside a class and therefore doesn't cause an > error. Unfortunately, that is not the case in non-class languages such as C. > Note: generating the C translation of the .proto files requires installation > of the protobuf-c package from google: > http://code.google.com/p/protobuf-c/ -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira