Running rollback on new-version namenode destroys namespace -----------------------------------------------------------
Key: HDFS-1969 URL: https://issues.apache.org/jira/browse/HDFS-1969 Project: Hadoop HDFS Issue Type: Bug Components: name-node Affects Versions: 0.22.0 Reporter: Todd Lipcon Priority: Blocker Fix For: 0.22.0 The following sequence leaves the namespace in an inconsistent/broken state: - format NN using 0.20 (or any prior release, probably) - run hdfs namenode -upgrade on 0.22. ^C the NN once it comes up. - run hdfs namenode -rollback on 0.22 (this should fail but doesn't!) This leaves the name directory in a state such that the version file claims it's an 0.20 namespace, but the fsimage is in 0.22 format. It then crashes when trying to start up. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira