Viktor, Yes. For example, in the biotech case the data is coming in from a device-based origin.
Best wishes, --greg On Thu, Jul 23, 2009 at 2:35 AM, Viktor Klang <[email protected]>wrote: > > > On Wed, Jul 22, 2009 at 11:52 PM, Meredith Gregory < > [email protected]> wrote: > >> Alex, Viktor, >> >> i think write semantics could get complicated quickly, actually. However, >> i was initially responding to the idea that trad business object models >> don't give way to analytics. Being able to make read-only queries against >> large volumes of data using the original business object schema seems to me >> like a win -- even if it's only used to populate a db that's sliced up in a >> different way for further analytics processing. > > > So basically, what's needed on top of HadoopDB is a service that updates > data as needed from external data sources. > > >> >> >> Best wishes, >> >> --greg >> >> On Wed, Jul 22, 2009 at 2:44 PM, Alex Cruise <[email protected]> wrote: >> >>> >>> Viktor Klang wrote: >>> > Absolutely, perhaps I'm tainted by write-heavy systems and perhaps I'm >>> > just failing to see the overhead we're talking about. >>> > Perhaps I overlooked it, but the paper didn't mention performance for >>> > small writes and potentially multiple nodespanning transactions. >>> HadoopDB makes no claim to any support for writes at all, I'm just >>> speculating that It Should Be Possible given my understanding of its >>> architecture, which is admittedly limited and based solely on reading >>> the paper and a bit of the code. :) >>> > I'm inclined to believe that some sort of immutable records storage >>> > would simlify the semantics (analytic queries are IMHO very seldom >>> > demanding real-time snapshots) >>> Analytical queries against static data are exactly what it's for. I >>> have no experience with its competition, namely parallel/distributed >>> column-oriented databases, so I can't say whether they're any happier >>> with writes. >>> >>> FYI I brought up HadoopDB on the NoSQL list too but so far not too many >>> takers... >>> >>> -0xe1a >>> >>> >>> >> >> >> -- >> L.G. Meredith >> Managing Partner >> Biosimilarity LLC >> 1219 NW 83rd St >> Seattle, WA 98117 >> >> +1 206.650.3740 >> >> http://biosimilarity.blogspot.com >> >> >> > > > -- > Viktor Klang > > Rogue Scala-head > > Twttr: viktorklang > > > > -- L.G. Meredith Managing Partner Biosimilarity LLC 1219 NW 83rd St Seattle, WA 98117 +1 206.650.3740 http://biosimilarity.blogspot.com --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Lift" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~----------~----~----~----~------~----~------~--~---
