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HDFS >> mail # user >> Re: Cluster lost IP addresses


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Re: Cluster lost IP addresses
oh,yes,it's not persist, only in memory. so there is no issue.
On Mar 23, 2013 1:13 PM, "Harsh J" <[EMAIL PROTECTED]> wrote:

> NameNode does not persist block locations; so this is still
> recoverable if the configs are changed to use the new set of hostnames
> to bind to/look up.
>
> On Sat, Mar 23, 2013 at 9:01 AM, Azuryy Yu <[EMAIL PROTECTED]> wrote:
> > it has issues, namenode save blockid->nodes, using ip addr if your slaves
> > config file using ip addr instead of hostname.
> >
> > On Mar 23, 2013 10:14 AM, "Balaji Narayanan (பாலாஜி நாராயணன்)"
> > <[EMAIL PROTECTED]> wrote:
> >>
> >> Assuming you are using hostnAmes and not ip address in your config files
> >> What happens when you start the cluster? If you are using IP address in
> your
> >> configs just update them and start. It should work with no issues.
> >>
> >> On Friday, March 22, 2013, John Meza wrote:
> >>>
> >>> I have a 18 node cluster that had to be physically moved.
> >>> Unfortunately all the ip addresses were lost (recreated).
> >>>
> >>> This must have happened to someone before.
> >>> Nothing else on the machines has been changed. Most importantly the
> data
> >>> in HDFS is still sitting there.
> >>>
> >>> Is there a way to recover this cluster to a useable state?
> >>> thanks
> >>> John
> >>
> >>
> >>
> >> --
> >> http://balajin.net/blog
> >> http://flic.kr/balajijegan
>
>
>
> --
> Harsh J
>
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