Sawhney, Prerna (Nokia - IN/Bangalore)
2016-Jun-27 05:48 UTC
[R] Right input mechanism to R for high amount of data
Hi All, I am currently loading 3B (20GB) events in my algorithm for processing. I am reading this data from postgresXL DB cluster (1 coordinator+4 datanodes (8cpu 61GB 200GB machines each)) total 1TB of space. The whole data loading is taking too much time almost 5days before I can start running my algorithms. Can you please help me in suggesting right technology to choose for inputting data? So clearly DB is the bottleneck right now Should I move away from postgresXL ? Which is most suitable options DB, File, Paraquet File to load data efficiently in R? Look forward to your responses Thanks Prerna [[alternative HTML version deleted]]
Hi have you read something of these? http://www.r-bloggers.com/five-ways-to-handle-big-data-in-r/ https://en.wikipedia.org/wiki/Programming_with_Big_Data_in_R http://r-pbd.org/ http://www.columbia.edu/~sjm2186/EPIC_R/EPIC_R_BigData.pdf I am not an expert in big data, however when reading your data takes days I wonder how do you want to do the analysis. AFAIK R keeps all read data in memory. Maybe others can give you better answer. Cheers Petr> -----Original Message----- > From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Sawhney, > Prerna (Nokia - IN/Bangalore) > Sent: Monday, June 27, 2016 7:48 AM > To: r-help at r-project.org > Subject: [R] Right input mechanism to R for high amount of data > > > Hi All, > > I am currently loading 3B (20GB) events in my algorithm for processing. I am > reading this data from postgresXL DB cluster (1 coordinator+4 datanodes > (8cpu 61GB 200GB machines each)) total 1TB of space. > > The whole data loading is taking too much time almost 5days before I can > start running my algorithms. > > Can you please help me in suggesting right technology to choose for > inputting data? So clearly DB is the bottleneck right now > > Should I move away from postgresXL ? Which is most suitable options DB, > File, Paraquet File to load data efficiently in R? > > Look forward to your responses > > Thanks > Prerna > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting- > guide.html > and provide commented, minimal, self-contained, reproducible code.________________________________ Tento e-mail a jak?koliv k n?mu p?ipojen? dokumenty jsou d?v?rn? a jsou ur?eny pouze jeho adres?t?m. Jestli?e jste obdr?el(a) tento e-mail omylem, informujte laskav? neprodlen? jeho odes?latele. Obsah tohoto emailu i s p??lohami a jeho kopie vyma?te ze sv?ho syst?mu. Nejste-li zam??len?m adres?tem tohoto emailu, nejste opr?vn?ni tento email jakkoliv u??vat, roz?i?ovat, kop?rovat ?i zve?ej?ovat. Odes?latel e-mailu neodpov?d? za eventu?ln? ?kodu zp?sobenou modifikacemi ?i zpo?d?n?m p?enosu e-mailu. V p??pad?, ?e je tento e-mail sou??st? obchodn?ho jedn?n?: - vyhrazuje si odes?latel pr?vo ukon?it kdykoliv jedn?n? o uzav?en? smlouvy, a to z jak?hokoliv d?vodu i bez uveden? d?vodu. - a obsahuje-li nab?dku, je adres?t opr?vn?n nab?dku bezodkladn? p?ijmout; Odes?latel tohoto e-mailu (nab?dky) vylu?uje p?ijet? nab?dky ze strany p??jemce s dodatkem ?i odchylkou. - trv? odes?latel na tom, ?e p??slu?n? smlouva je uzav?ena teprve v?slovn?m dosa?en?m shody na v?ech jej?ch n?le?itostech. - odes?latel tohoto emailu informuje, ?e nen? opr?vn?n uzav?rat za spole?nost ??dn? smlouvy s v?jimkou p??pad?, kdy k tomu byl p?semn? zmocn?n nebo p?semn? pov??en a takov? pov??en? nebo pln? moc byly adres?tovi tohoto emailu p??padn? osob?, kterou adres?t zastupuje, p?edlo?eny nebo jejich existence je adres?tovi ?i osob? j?m zastoupen? zn?m?. This e-mail and any documents attached to it may be confidential and are intended only for its intended recipients. If you received this e-mail by mistake, please immediately inform its sender. Delete the contents of this e-mail with all attachments and its copies from your system. If you are not the intended recipient of this e-mail, you are not authorized to use, disseminate, copy or disclose this e-mail in any manner. The sender of this e-mail shall not be liable for any possible damage caused by modifications of the e-mail or by delay with transfer of the email. In case that this e-mail forms part of business dealings: - the sender reserves the right to end negotiations about entering into a contract in any time, for any reason, and without stating any reasoning. - if the e-mail contains an offer, the recipient is entitled to immediately accept such offer; The sender of this e-mail (offer) excludes any acceptance of the offer on the part of the recipient containing any amendment or variation. - the sender insists on that the respective contract is concluded only upon an express mutual agreement on all its aspects. - the sender of this e-mail informs that he/she is not authorized to enter into any contracts on behalf of the company except for cases in which he/she is expressly authorized to do so in writing, and such authorization or power of attorney is submitted to the recipient or the person represented by the recipient, or the existence of such authorization is known to the recipient of the person represented by the recipient.