I've posted an hbase 0.20.4 release candidate 5 here: http://people.apache.org/~stack/hbase-0.20.4-candidate-5/
It includes a fix for the issue J-D found offlining big tables. Should we release this candidate as hbase 0.20.4? It includes critical fixes and some performance enhancements (See CHANGES.txt or the release notes in the docs [1] for issues addressed by this candidate). Please take it for a test spin if you have a chance. Vote closes Saturday, the 1st of May. Yours, Your HBase Team 1. http://people.apache.org/~stack/hbase-0.20.4-candidate-5/hbase-0.20.4/docs/releasenotes.html