[ http://issues.apache.org/jira/browse/HADOOP-56?page=comments#action_12368007 ]
Doug Cutting commented on HADOOP-56: ------------------------------------ I agree with Eric: a filesystem GUID could be a useful long-term feature, and may help solve this problem, but we need a simpler solution short-term. I think adding a format command would address this issue, and also still be useful if we later add a filesystem guid. > hadoop nameserver does not recognise ndfs nameserver image > ---------------------------------------------------------- > > Key: HADOOP-56 > URL: http://issues.apache.org/jira/browse/HADOOP-56 > Project: Hadoop > Type: Bug > Components: dfs > Versions: 0.1 > Reporter: Yoram Arnon > Priority: Critical > Attachments: ndfs.tar.gz > > hadoop nameserver does not recognise ndfs image > Thus, upgrading from ndfs to hadoop dfs results in total data loss. > The upgrade should be seemless, with the new server recognising all previous > version that are not end-of-life'd. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
