Hey gang, I was looking at the difference between hdfs trunk and 23, for the purpose of looking at what to merge to 23. Here's a summary of the differences:
1. BR scalability (HDFS-395, HDFS-2477, HDFS-2495, HDFS-2476) 2. BK support (HDFS-234 and related refactoring) 3. Protobuf RPC changes 4. A dozen straight-forward bugs and trivial cleanup 5. Refactorings (HdfsConstants rename, Refactor RPC out of NN, Untangle NN deps) 6. FSEditLog should not writes long and short as UTF8 (HDFS-362) 7. Configurable # low resource/failed vols (HDFS-2430) 8. Test fixes (for the above) Seems like we should merge these: #1 - significant improvement, also aids merges of important bug fixes like HDFS-1765 #3 - once it's completed #4 - these are no brainers #5 - needed to aids future merges like HDFS-1623 #7 - good feature, not very intrusive #8 - required for others Seems like we can pass on: #2 - is contrib, should soak #5 - changes the image format so requires an HDFS upgrade I'm planning on merging #4, will update target version on jira before doing so, as they should be uncontroversial, but wanted to see what Arun and others thought about the other changes. Reasonable? Thanks, Eli
