er looking at map-side joins, which
> will allow for doing non-equality filters during a join before it’s passed
> to the reducers.
> >> >
> >> > Matt Tucker
> >> >
> >> > From: mahsa mofidpoor [mailto:mofidp...@gmail.com]
> >> > Sent:
>> > Matt Tucker
>> >
>> > From: mahsa mofidpoor [mailto:mofidp...@gmail.com]
>> > Sent: Tuesday, March 13, 2012 1:02 PM
>> > To: user@hive.apache.org
>> > Subject: Re: non-equality joins
>> >
>> >
>> > Hi Keith,
>&g
t map-side joins, which will
> allow for doing non-equality filters during a join before it’s passed to
> the reducers.
> >
> > Matt Tucker
> >
> > From: mahsa mofidpoor [mailto:mofidp...@gmail.com]
> > Sent: Tuesday, March 13, 2012 1:02 PM
> > To: user@hi
g a join before it’s passed to the reducers.
>
> Matt Tucker
>
> From: mahsa mofidpoor [mailto:mofidp...@gmail.com]
> Sent: Tuesday, March 13, 2012 1:02 PM
> To: user@hive.apache.org
> Subject: Re: non-equality joins
>
>
> Hi Keith,
>
> Do you
re it’s passed to the reducers.
>
> Matt Tucker
>
> From: mahsa mofidpoor [mailto:mofidp...@gmail.com]
> Sent: Tuesday, March 13, 2012 1:02 PM
> To: user@hive.apache.org
> Subject: Re: non-equality joins
>
>
> Hi Keith,
>
> Do you know exactly how an algorit
sed to the reducers.
Matt Tucker
From: mahsa mofidpoor [mailto:mofidp...@gmail.com]
Sent: Tuesday, March 13, 2012 1:02 PM
To: user@hive.apache.org
Subject: Re: non-equality joins
Hi Keith,
Do you know exactly how an algorithm should be in order to fit in the MapReduce
framework? Could you r
Hi Keith,
Do you know exactly how an algorithm should be in order to fit in the
MapReduce framework? Could you refer me to some references?
Thanks and Regards,
Mahsa
On Tue, Mar 13, 2012 at 12:49 PM, Keith Wiley wrote:
> https://cwiki.apache.org/Hive/languagemanual-joins.html
>
> "Hive does
https://cwiki.apache.org/Hive/languagemanual-joins.html
"Hive does not support join conditions that are not equality conditions as it
is very difficult to express such conditions as a map/reduce job."
I admit, that isn't a very detailed answer, but it gives some indication of the
reason for the
