hadoop-general mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Segel, Mike" <mse...@navteq.com>
Subject RE: Derby with Hadoop --Why?
Date Wed, 10 Aug 2011 12:34:07 GMT
It's been far too many years since I was handed my diploma and kicked off campus. :-)
IMHO it's a bit esoteric for a class room homework assignment.  Maybe an interview question
used to stump most of the candidates?

The funny thing is that on the walk to work, I started to think of if it made sense for a
certain subset of m/r problems to use derby as an in memory db/local lightweight DB
Ok and before you say WTF, I'm talking about a subset of problems where depending on the input
to the Mapper.map() method, you may want to do a quick look up against a database which contains
lookup data that is static and is indexed. 

Ok, so maybe I shouldn't read my e-mails before heading off to work... :-)


-----Original Message-----
From: Ted Dunning [mailto:tdunning@maprtech.com] 
Sent: Wednesday, August 10, 2011 12:55 AM
To: general@hadoop.apache.org
Subject: Re: Derby with Hadoop --Why?

No.  He meant nothing of the kind.  The other explanations expanded on this.

This sounds like homework.  If so, I would recommend a bit of reading before asking.

On Tue, Aug 9, 2011 at 10:37 PM, Saravana Kumar

The information contained in this communication may be CONFIDENTIAL and is intended only for
the use of the recipient(s) named above.  If you are not the intended recipient, you are hereby
notified that any dissemination, distribution, or copying of this communication, or any of
its contents, is strictly prohibited.  If you have received this communication in error, please
notify the sender and delete/destroy the original message and any copy of it from your computer
or paper files.

View raw message