Could you check the NameNode/SecondaryNameNode logs and try to find the exact issue? Post the errors (if) it contains here, so we can try to help you better.
On Thu, Aug 5, 2010 at 9:39 AM, edward choi <[email protected]> wrote: > I am currently stuck with hadoop namenode that won't start. > > When I type "start-all.sh", everything prints out fine. > But when I type "jps", only JobTracker is activated. > > When this happens, I usually format the namenode. > > But the problem is that there are 500gigs of date in HDFS. > So I really want to save the data. > > Can anyone give help please? > -- Harsh J www.harshj.com
