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Hadoop >> mail # user >> Hbase and "ghost regionservers"


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Håvard Wahl Kongsgård 2012-08-16, 12:17
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Re: Hbase and "ghost regionservers"
For the record, this issue was caused by multiple entries in
/etc/hosts for global IP.

for example /etc/hosts

127.0.0.1 localhost
ntnu.no 176.19.190.1
master 176.19.190.1

removing the second entry (master 176.19.190.1), resolved the issue.

-Håvard

On Thu, Aug 16, 2012 at 2:17 PM, Håvard Wahl Kongsgård
<[EMAIL PROTECTED]> wrote:
> Hi, when I start my hbase cluster, hbase sometimes list 'ghost
> regionservers' without any regions
>
>     kongs2.medisin.ntnu.no:60020 1345115409411
>         requests=0, regions=0, usedHeap=0, maxHeap=0
>
> netstat does not list any services on 60020
>
> if I start a region server locally
>
> I get one real services and the ghost server
>
>     kongs2.medisin.ntnu.no:60020 1345119112497
>         requests=0, regions=64, usedHeap=141, maxHeap=1487
>     kongs2.medisin.ntnu.no:60020 1345119112497
>         requests=0, regions=0, usedHeap=0, maxHeap=0
>
> Is it possible to manually blacklist or remove regionserver, via the
> hbase shell?
>
> I use the latest hbase from cloudera
>
> -Håvard

--
Håvard Wahl Kongsgård
Faculty of Medicine &
Department of Mathematical Sciences
NTNU

http://havard.security-review.net/
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