Tsz Wo (Nicholas), SZE created HDFS-5753: --------------------------------------------
Summary: Add new NN startup options for downgrade and rollback using upgrade marker Key: HDFS-5753 URL: https://issues.apache.org/jira/browse/HDFS-5753 Project: Hadoop HDFS Issue Type: Sub-task Components: namenode Reporter: Tsz Wo (Nicholas), SZE Namenode could be started up with -upgrade / -rollback. The -rollback option will restore the data using the previous directory. New options are needed for downgrade and rollback using the upgrade marker. -- This message was sent by Atlassian JIRA (v6.1.5#6160)