Home | About | Sematext search-lucene.com search-hadoop.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
 Search Hadoop and all its subprojects:

Switch to Threaded View
HBase >> mail # user >> scan is slower after bulk load


Copy link to this message
-
Re: scan is slower after bulk load
may be because bulk load writes to the same region thus putting the entire
load on a single region server.

Regards,
    Mohammad Tariq

On Mon, Nov 12, 2012 at 9:15 PM, Michael Segel <[EMAIL PROTECTED]>wrote:

> Just a guess... have you done any compactions on the table post bulk load?
>
> On Nov 12, 2012, at 8:44 AM, Marcos Ortiz <[EMAIL PROTECTED]> wrote:
>
> > Regards, Amit.
> > Did you tuned the RegionServer where you has that data range hosted?
> > Why do you say that scans are slower after a bulk load?
> > Did you test it before bulk load?
> >
> > HBase version?
> >
> > On 11/12/2012 09:39 AM, Amit Sela wrote:
> >> Hi all,
> >>
> >> Anyone has any idea why scanning over specific range in a table is about
> >> 20% slower if that data (that specific range) was just inserted into
> HBase
> >> using bulk load ?
> >>
> >> I do the bulk load programmatically with  LoadIncrementalHFiles.
> >>
> >> Thanks.
> >>
> >
> > --
> >
> > Marcos Luis Ortíz Valmaseda
> > about.me/marcosortiz <http://about.me/marcosortiz>
> > @marcosluis2186 <http://twitter.com/marcosluis2186>
> >
> >
> >
> > 10mo. ANIVERSARIO DE LA CREACION DE LA UNIVERSIDAD DE LAS CIENCIAS
> INFORMATICAS...
> > CONECTADOS AL FUTURO, CONECTADOS A LA REVOLUCION
> >
> > http://www.uci.cu
> > http://www.facebook.com/universidad.uci
> > http://www.flickr.com/photos/universidad_uci
>
>
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