Thanks Xiang, I have read it already . But I am not clear about this point -
1. *Local or shuffle grouping: If the target bolt has one or more tasks in the same worker process, tuples will be shuffled to just those in-process tasks. Otherwise, this acts like a normal shuffle grouping* On Sun, Apr 10, 2016 at 6:55 AM, Xiang Wang <[email protected]> wrote: > Hi, > > Please have a look at this page: > http://storm.apache.org/releases/0.10.0/Concepts.html > > There are many different grouping methods, and direct grouping may be what > you are looking for. > > > ------------------------------- > Xiang Wang PhD Candidate > Database Research Group > School of Computer Science and Engineering > The University of New South Wales > Sydney, Australia > > On Sun, Apr 10, 2016 at 7:14 AM, anshu shukla <[email protected]> > wrote: > >> Suppose we have 10 exec/threads of spouts sending tuples to 5 threads of >> downstream bolt (say B) .Then my question is - >> >> *Does every thread of spout will uniformly distribute messages to all the >> 5 threads of downstream nodes .* >> >> *Or * >> >> *Is there any one to one communication btw spouts exec to bolts .* >> >> >> Very relevant if we want to improve N/W cost by custom scheduler in storm. >> >> -- >> Thanks & Regards, >> Anshu Shukla >> > > -- Thanks & Regards, Anshu Shukla
