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MapReduce >> mail # user >> Which tool or framework to use?

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Which tool or framework to use?

I have a oracle db which has about 0 tables with millions of rows in them.
I have a requirement which involves performing group by on a lot of tables
when required, like drilling down the tables.The existing system is taking
a lot of time.

Other than using hadoop for writing jobs and acheiving the above are there
any other tools or framework in hadoop that can perform better "groupby"
Radim Kolar 2013-02-28, 12:23