Got it, thanks for the clarification, Josh! On Tue, Apr 30, 2019, 10:34 AM Josh Elser <els...@apache.org> wrote:
> No, you will not "lose" data. You will just have mappers that read from > more than one Region (and thus, more than one RegionServer). The hope in > this approach is that we can launch Mappers on the same node of the > RegionServer hosting your Region and avoid any reading any data over the > network. > > This is just an optimization. > > On 4/30/19 10:12 AM, Shawn Li wrote: > > Hi, > > > > The number of Map in Phoenix Mapreduce is determined by table region > > number. My question is: if the region is split due to other injection > > process while Phoenix Mapreduce job is running, do we lose reading some > > data due to this split? As now we have more regions than maps, and the > > maps only have region information before split. > > > > Thanks, > > Shawn >
