Namenode HA (HDFS-1623) feature is now in trunk (yay!). It adds support for namenode high availability with active and standby namenodes, with manual failover. I propose merging this feature to 0.23 branch. Recently Nicholas merged protocol buffers/wire compatibility changes to 0.23. Merging Namenode HA into 0.23 will make it a significant release.
I plan to complete this by next week after running some nightly/regressions tests. Early next week, I plan to attach a 0.23 merge patch to HDFS-1623 jira for people interested in reviewing the patch. Please vote. Regards, Suresh
