Would it be useful to use InternalScanner in such a scenario?? Regards, Mohammad Tariq
On Thu, Jun 28, 2012 at 3:13 AM, Mohammad Tariq <[email protected]> wrote: > Aman, Lars, > > If I already know in advance that a particular region > holds the data of my interest, then how can I use Coprocessor to > operate on that region only and not on all the regions of a particular > table??Thank you. > > Regards, > Mohammad Tariq > > > On Wed, Jun 27, 2012 at 11:57 PM, Lars George <[email protected]> wrote: >> Hi Mohammad, >> >> Not sure I follow. :( >> >> Coprocessor is not MapReduce. MapReduce already takes care to run your code >> local to the data. >> >> Coprocessors can be seen like lightweight Map-only MapReduce job. >> >> You need to share a few more details for us to be able to help. >> >> Thanks, >> Lars >> >> On Jun 26, 2012, at 7:44 PM, Mohammad Tariq wrote: >> >>> Hello Lars, >>> >>> Thank you so much for the quick response.Actually, I want to >>> run my MapReduce jobs on a region that contains a specific set of >>> data. >>> >>> Regards, >>> Mohammad Tariq >>> >>> >>> On Tue, Jun 26, 2012 at 9:18 PM, Lars George <[email protected]> wrote: >>>> Hi Mohammad, >>>> >>>> The code runs on the server which is opening the region. It sounds to me >>>> that this is not what you want and that you need to have access to some >>>> sort of resources only available on one specific server? Because if that >>>> is not the case, then you are simply using the coprocessors the wrong way >>>> IMHO. >>>> >>>> Lars >>>> >>>> On Jun 26, 2012, at 6:44 PM, Mohammad Tariq wrote: >>>> >>>>> Hello list, >>>>> >>>>> Is it possible to use Coprocessors on some specific >>>>> regionservers instead of a per-region basis??As per my understanding a >>>>> coprocessor allows us to run the code directly on each region >>>>> server.Please correct me if I am wrong.Many thanks. >>>>> >>>>> Please correct me if I am wrong. >>>>> Regards, >>>>> Mohammad Tariq >>>> >>
