[ https://issues.apache.org/jira/browse/HDFS-5753?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tsz Wo (Nicholas), SZE updated HDFS-5753: ----------------------------------------- Attachment: h5786_20140117.patch h5786_20140117.patch: adds a new startup option "-rollingUpgrade <rollback|downgrade>". Will update the doc in HDFS-5778. > 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 > Assignee: Tsz Wo (Nicholas), SZE > Attachments: h5786_20140117.patch > > > 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)