Mike , Can you please give more details . Context is not clear . Can you share ur use case if possible On Jul 24, 2012 1:40 AM, "Mike S" <mikesam...@gmail.com> wrote:
> If I set my reducer output to map file output format and the job would > say have 100 reducers, will the output generate 100 different index > file (one for each reducer) or one index file for all the reducers > (basically one index file per job)? > > If it is one index file per reducer, can rely on HDFS append to change > the index write behavior and build one index file from all the > reducers by basically making all the parallel reducers to append to > one index file? Data files do not matter. >
