+1 for 1 adding "BR scalability (HDFS-395, HDFS-2477, HDFS-2495, HDFS-2476)"
These are very significant performance improvements that would be very valuable in 0.23. -dhruba On Thu, Jan 5, 2012 at 7:52 PM, Eli Collins <e...@cloudera.com> wrote: > 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 > -- Subscribe to my posts at http://www.facebook.com/dhruba
