On 12/06/2012 11:55 AM, yogesh dhari wrote:
> Hi all,
>
> Hadoop have different file system(HDFS) and Cassandra have different
> file system(CFS).
>
> As Hadoop have great Eco-System (Hive{Dataware House}, Hbase{Data
> Base} n etc..) and Cassandra(Database) it self providing its own file
> system
>
> Although  we can run Hadoop's Ecosystem on Cassandra (If I am right ?
> {like pig and hive})
>
> Hadoop have single point of Failure but Cassandra doesn't..
There are two projects in Hadoop working to avoid SPOF called HDFS HA
and HDFS Federation.
There is a new branch called YARN which include all this.

>
> Please put some light on both of these where Hadoop overtakes
> Cassandra an where Cassandra.
I think a more fair comparison is with HBase, not with Hadoop.
Look here
http://horicky.blogspot.com/2010/10/bigtable-model-with-cassandra-and-hbase.html
>
> And in which use cases we go for any them.
>
>
> Thanks & Regards
> Yogesh Kumar
>
>
>
> <http://www.uci.cu/>

--

Marcos Luis Ort�z Valmaseda
about.me/marcosortiz <http://about.me/marcosortiz>
@marcosluis2186 <http://twitter.com/marcosluis2186>

10mo. ANIVERSARIO DE LA CREACION DE LA UNIVERSIDAD DE LAS CIENCIAS INFORMATICAS...
CONECTADOS AL FUTURO, CONECTADOS A LA REVOLUCION

http://www.uci.cu
http://www.facebook.com/universidad.uci
http://www.flickr.com/photos/universidad_uci

On Thu, Dec 6, 2012 at 8:55 AM, yogesh dhari <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> Hadoop have different file system(HDFS) and Cassandra have different file
> system(CFS).
>
> As Hadoop have great Eco-System (Hive{Dataware House}, Hbase{Data Base} n
> etc..) and Cassandra(Database) it self providing its own file system
>
> Although  we can run Hadoop's Ecosystem on Cassandra (If I am right ? {like
> pig and hive})
>
> Hadoop have single point of Failure but Cassandra doesn't..
>
> Please put some light on both of these where Hadoop overtakes Cassandra an
> where Cassandra.
>
> And in which use cases we go for any them.

As Harsh commented, HDFS doesn't have a single point of failure any more.

Hadoop and Cassandara are not really competitors.  You can run Hadoop
on top of Cassandra if you want.

It's possible to compare Cassandra and HBase, and some people have
done so.  In general, I've been told that Cassandra is a better match
for situations where you write more than you read, and you don't care
about data consistency.  But that might be a better question for the
HBase and/or Cassandra mailing lists.

cheers,
Colin

Hi Yogesh,
As others have said Hadoop vs Cassandra is not a fair comparison. Although,
HBase vs Cassandra is a fair comparison. You can have a look at this
comparison: http://bigdatanoob.blogspot.com/2012/11/hbase-vs-cassandra.html

HTH,
Anil Gupta

On Thu, Dec 6, 2012 at 11:27 AM, Colin McCabe <[EMAIL PROTECTED]>wrote:

> On Thu, Dec 6, 2012 at 8:55 AM, yogesh dhari <[EMAIL PROTECTED]> wrote:
> > Hi all,
> >
> > Hadoop have different file system(HDFS) and Cassandra have different file
> > system(CFS).
> >
> > As Hadoop have great Eco-System (Hive{Dataware House}, Hbase{Data Base} n
> > etc..) and Cassandra(Database) it self providing its own file system
> >
> > Although  we can run Hadoop's Ecosystem on Cassandra (If I am right ?
> {like
> > pig and hive})
> >
> > Hadoop have single point of Failure but Cassandra doesn't..
> >
> > Please put some light on both of these where Hadoop overtakes Cassandra
> an
> > where Cassandra.
> >
> > And in which use cases we go for any them.
>
> As Harsh commented, HDFS doesn't have a single point of failure any more.
>
> Hadoop and Cassandara are not really competitors.  You can run Hadoop
> on top of Cassandra if you want.
>
> It's possible to compare Cassandra and HBase, and some people have
> done so.  In general, I've been told that Cassandra is a better match
> for situations where you write more than you read, and you don't care
> about data consistency.  But that might be a better question for the
> HBase and/or Cassandra mailing lists.
>
> cheers,
> Colin
>

--
Thanks & Regards,
Anil Gupta