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From Shekhar Sharma <shekhar2...@gmail.com>
Subject Re: External db
Date Sun, 15 Dec 2013 16:28:37 GMT
HDFS is batch mode suitable for OLAP not for OLTP..

OLTP requires the data need to be updated, deleted , basically CRUD
operation..But HDFS doesnt support random writes..so not suitable for
OLTP...And thats where the nosql databases comes in
Regards,
Som Shekhar Sharma
+91-8197243810


On Sun, Dec 15, 2013 at 6:51 PM, Kishore <alajangikishore@gmail.com> wrote:
> Hi experts,
>
> What exactly needed the nosql database like Cassandra, hbase and mongodb when we have
hdfs, ofcourse
> It supports oltp, are we storing the results from hdfs and reanalysing in nosql?
>
> Sent from my iPhone

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