hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From bharath vissapragada <bharathvissapragada1...@gmail.com>
Subject Re: anyone with experience in hbase 0.20 realtime application?
Date Wed, 12 Aug 2009 14:01:30 GMT
Vaibhav

By caching do you mean storing storing all the rows in a HashMap in the
memory , so that u can access that map repeatedly instead of Disk IOs ?

Thanks

On Wed, Aug 12, 2009 at 4:53 AM, Vaibhav Puranik <vpuranik@gmail.com> wrote:

> Amandeep,
>
> We are caching Hbase results in memory (in a HashMap).
>
> Regards,
> Vaibhav
>
> On Tue, Aug 11, 2009 at 12:56 PM, Amandeep Khurana <amansk@gmail.com>
> wrote:
>
> > Vaibhav,
> >
> > What kind of caching are you doing over hbase and how?
> >
> > -Amandeep
> >
> >
> > Amandeep Khurana
> > Computer Science Graduate Student
> > University of California, Santa Cruz
> >
> >
> > On Tue, Aug 11, 2009 at 10:48 AM, Vaibhav Puranik <vpuranik@gmail.com
> > >wrote:
> >
> > > We are using HBase 0.20 (Trunk version at 23rd July evening) in
> > production
> > > environment at GumGum.
> > >
> > > Our experience is very good. Initially I mistakenly forgot to add
> caching
> > > (even though we had planned for it) and every request was fetching two
> > rows
> > > from Hbase and inserting one row in HBase.
> > > In spite of that our request processing time was less than 300 ms.
> > >
> > > We are not getting huge amounts of requests - we approximately get
> 25,000
> > > to
> > > 30,000 requests to our web app backed by HBase every day.
> > >
> > > We have a 4 node cluster running on EC2 (Large instances) and so far we
> > > haven't faced any production problem.
> > > (Hope it works out that way all the time!)
> > >
> > > Regards,
> > > Vaibhav Puranik,
> > > GumGum
> > >
> > >
> > >
> > >
> > > On Tue, Aug 11, 2009 at 10:29 AM, Fabio Kaminski <
> > > fabiokaminski@mobly.com.br
> > > > wrote:
> > >
> > > > is there anyone with experience in hbase 0.20 realtime application,
> > > > preferably in production environment?
> > > >
> > > > in thinking in throw away all my legacy knowledge about what i think
> > > about
> > > > systems.. cause i think this is the hadoop(and hbase) are the next
> big
> > > > thing
> > > > in tecnology.. i really buy this concept and im glady that i found it
> > > right
> > > > in it's inception.
> > > >
> > > > Im preparing to work with hadoop and hbase for realtime environment,
> > and
> > > i
> > > > could see that the hbase engineers are preparing hbase for realtime
> > > > applications, like rdbms standards does, but in a new and promissing
> > > > environment. this is undoubtly a paradigm shift!
> > > >
> > > > anyone with realtime application runing in such environment? could
> you
> > > > share
> > > > some of you experience with it?
> > > >
> > > > Thanks !
> > > >
> > > > Fabio Kaminski
> > > >
> > >
> >
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message