Hi Alex, > UC Santa Cruz contributed a ;login: article describing replacing HDFS with > Ceph. (I was one of the authors.) One of the key architectural advantages > of > Ceph over HDFS is that Ceph distributes its metadata service over multiple > metadata servers.
Were you able to maintain stable operation with Ceph at a high load? Did you try running HBase? Best regards, - Andy Problems worthy of attack prove their worth by hitting back. - Piet Hein (via Tom White) ----- Original Message ----- > From: Alex Nelson <ajnel...@cs.ucsc.edu> > To: George Kousiouris <gkous...@mail.ntua.gr> > Cc: common-dev@hadoop.apache.org; common-u...@hadoop.apache.org; Carlos > Maltzahn <carl...@soe.ucsc.edu> > Sent: Friday, August 26, 2011 2:44 AM > Subject: Re: Any related paper on how to resolve hadoop SPOF issue? > > Hi George, > > UC Santa Cruz contributed a ;login: article describing replacing HDFS with > Ceph. (I was one of the authors.) One of the key architectural advantages > of > Ceph over HDFS is that Ceph distributes its metadata service over multiple > metadata servers. > > I hope that helps. > > --Alex > > > On Aug 25, 2011, at 02:54 , George Kousiouris wrote: > >> >> Hi, >> >> many thanks!! >> >> I also found this one, which has some related work also with other efforts, > in case it is helpful for someone else: >> > https://ritdml.rit.edu/bitstream/handle/1850/13321/ATalwalkarThesis1-2011.pdf?sequence=1 >> >> >> BR, >> George >> >> On 8/25/2011 12:46 PM, Nan Zhu wrote: >>> Hope it helps >>> >>> http://www.springerlink.com/content/h17r882710314147/ >>> >>> Best, >>> >>> Nan >>> >>> On Thu, Aug 25, 2011 at 5:43 PM, George > Kousiouris<gkous...@mail.ntua.gr>wrote: >>> >>>> Hi guys, >>>> >>>> We are currently in the process of writing a paper regarding hadoop > and we >>>> would like to reference any attempt to remove the single point of > failure of >>>> the Namenode. We have found in various presentations some efforts > (like >>>> dividing the namespace between more than one namenodes if i > remember >>>> correctly) but the search for a concrete paper on the issue came to > nothing. >>>> >>>> Is anyone aware or has participated in such an effort? >>>> >>>> Thanks, >>>> George >>>> >>>> -- >>>> >>>> --------------------------- >>>> >>>> George Kousiouris >>>> Electrical and Computer Engineer >>>> Division of Communications, >>>> Electronics and Information Engineering >>>> School of Electrical and Computer Engineering >>>> Tel: +30 210 772 2546 >>>> Mobile: +30 6939354121 >>>> Fax: +30 210 772 2569 >>>> Email: gkous...@mail.ntua.gr >>>> Site: http://users.ntua.gr/gkousiou/ >>>> >>>> National Technical University of Athens >>>> 9 Heroon Polytechniou str., 157 73 Zografou, Athens, Greece >>>> >>>> >>> >> >> >> -- >> >> --------------------------- >> >> George Kousiouris >> Electrical and Computer Engineer >> Division of Communications, >> Electronics and Information Engineering >> School of Electrical and Computer Engineering >> Tel: +30 210 772 2546 >> Mobile: +30 6939354121 >> Fax: +30 210 772 2569 >> Email: gkous...@mail.ntua.gr >> Site: http://users.ntua.gr/gkousiou/ >> >> National Technical University of Athens >> 9 Heroon Polytechniou str., 157 73 Zografou, Athens, Greece >> >
