We don't attempt to optimize region placement with hdfs locations yet. A
reason why is because on a long lived cluster compactions create the
locality you are looking for. Furthermore, in the old master such an
optimization was really hard to do. The new master should make it easier to
write such 1 off hacks.
On Oct 11, 2010 9:43 PM, "Tao Xie" <[email protected]> wrote:
> hi, all
> I set hdfs replica=1 when running hbase. And DN and RS co-exists on each
> slave node. So the data in the regions managed by RS will be stored on its
> local data node, rite?
> But when I restart hbase and hbase client does gets on RS, datanode will
> read data from remote data nodes. Does that mean when RS restart, the
> regions are re-arranged? If so, will hbase is clever enough to re-adjust
the
> regions? I'm not clear about the behind mechanism so anyone can give me
some
> explanations? Thanks.
