Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
Accumulo, mail # user - Running Accumulo straight from Memory


Copy link to this message
-
Re: Running Accumulo straight from Memory
Adam Fuchs 2012-09-12, 21:27
Yes, the effect of locality groups would be about the same in an in memory
system. The only exception would be if you're not using locality groups and
are fetching a particular column, the automatic seeking behavior of the
column filtering iterator would be more efficient with in memory rfiles.

Adam
On Sep 12, 2012 5:20 PM, "David Medinets" <[EMAIL PROTECTED]> wrote:

> Why would locality groups be useful in an in-memory system?
>
> On Wed, Sep 12, 2012 at 4:53 PM, Adam Fuchs <[EMAIL PROTECTED]> wrote:
> > Even if you are just using memory, minor and major compactions are
> important
> > to get compression, handle deletes, get sequential access (cache line
> > efficiency), use iterators, and introduce locality groups.
>