+1 (non-binding). This feature is very good for the developers to reduce the tasks for supporting FSImage compatibility.
Thanks, Akira (2014/01/31 7:37), Haohui Mai wrote:
Hello all, I would like to call a vote to merge of the new protobuf-based FSImage into trunk. The changes introduce a protobuf-based FSImage format into HDFS. It separates the responsibility of serializing and reconstructing the namespace in the NameNode using Google's Protocol Buffers (protobuf). The new FSImage delegates much parts of the serialization / deserialization logics to the protobuf side. It is also designed to improve the supports for compatibility and interoperability. The development has been done in a separate branch: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-5698 The design document is available at: https://issues.apache.org/jira/secure/attachment/12626179/HDFS-5698-design.pdf The HDFS-5698 jira tracks the development of the feature. The feature changes no public APIs. The existing tests include both unit tests and end-to-end tests. They have already covered this feature. Once the feature is merged into trunk, we will continue to test and fix any bugs that may be found on trunk. The bulk of the design and implementation was done by Jing Zhao, Suresh Srinivas and me. Thanks Kihwal Lee, Todd Lipcon, Colin Patrick McCabe, Chris Nauroth, and Daryn Sharp for providing feedback on the jiras and in discussions. This vote runs for a week and closes on 2/6/2013 at 11:59 pm PT. Regards, Haohui
