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Hadoop >> mail # user >> Hodoop namenode startup problem


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Re: Hodoop namenode startup problem
I've fixed the problem.

The reason namenode won't start was that I accidentally started the cluster
with root account.
This somehow changed the ownership of some hadoop-related files(ex: log
files, and hadoop.tmp.dir/dfs/name/current/edits) from hadoop:hadoop to
root:root.
After I fixed the ownership issue, everything went fine.
Thanks for the concern.

2010/8/5 Harsh J <[EMAIL PROTECTED]>

> 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
>
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB