I think one possible reason is block caching. Have you turned the block caching off during scanning?
Regards, Jieshan ________________________________________ From: Mohammad Tariq [[email protected]] Sent: Tuesday, November 13, 2012 1:04 To: [email protected] Subject: 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 OrtÃz 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 > >
