Hi Li Li, If you have more than one region, might be useful. MR will scan all the regions in parallel. If you do a full scan from a client API with no parallelism, then the MR job might be faster. But it will take more resources on the cluster and might impact the SLA of the other clients, if any,
JM 2014-04-14 2:42 GMT-04:00 Mohammad Tariq <[email protected]>: > Well, it depends. Could you please provide some more details?It will help > us in giving a proper answer. > > Warm Regards, > Tariq > cloudfront.blogspot.com > > > On Mon, Apr 14, 2014 at 11:38 AM, Li Li <[email protected]> wrote: > > > I have a full table scan which cost about 10 minutes. it seems a > > bottleneck for our application. if use map-reduce to rewrite it. will > > it be faster? > > >
