This one is under active discussion:
HDFS-4672 Support tiered storage policies
On Tue, Apr 9, 2013 at 10:02 PM, ramkrishna vasudevan <
[EMAIL PROTECTED]> wrote:
> Interesting topic and we have a JIRA already raised for such a feature.
> But still the work is in progress
> On Tue, Apr 9, 2013 at 10:07 PM, Stack <[EMAIL PROTECTED]> wrote:
> > On Tue, Apr 9, 2013 at 4:41 AM, Bing Jiang <[EMAIL PROTECTED]>
> > wrote:
> > > hi,
> > >
> > > There are some physical machines which each one contains a large
> > > and general disk(4T),
> > > and we want to build our hdfs and hbase environment.
> > >
> > What kind of workload do you intend to run on these machines? Do you
> > enough space running all of your work load on SSD? At an extreme, you
> > could have two clusters -- one running on SSDs for low latency workloads
> > and the other on spinning disk -- and perhaps your segregation is such
> > having to copy between the two systems is rare, etc., etc.
> > St.Ack