Can't do variable block size in vanilla hadoop.  That is part of the whole
namenode legacy.

On Tue, Aug 28, 2012 at 2:56 AM, Min Zhou <coderplay@gmail.com> wrote:

> 1. If it's one data file for each column, data locality is difficult to
>    guarantee when rebuilding a row from column files. Unless
>    that GFS can keep all fields from the same row in files of the
>    same node. Moreover that, data block can't be a fixed
>    size like 1MB/64MB/128MB, cuz
>