Map\Reduce for one row

[Alex Spodinets <sp...@gmail.com>]

Hello,

Is it possible to run a Map\Reduce job for only one row in table? Thus
skipping the unnecessary cycling through other rows by ignoring them
manually or via "skip mode".


The idea behind it is to use Map\Reduce more like an application server with
data location awareness vs batch\parallel processing system.

Thanks.

Re: Map\Reduce for one row

[Tim Sell <tr...@gmail.com>]

Yes it is possible.
if you just want one row though, you would use the hbase client
package and do a simple Get.

Have a read of
http://wiki.apache.org/hadoop/Hbase/HbaseArchitecture
http://labs.google.com/papers/bigtable.html

2009/8/11 Alex Spodinets <sp...@gmail.com>:
> Hello,
>
> Is it possible to run a Map\Reduce job for only one row in table? Thus
> skipping the unnecessary cycling through other rows by ignoring them
> manually or via "skip mode".
>
>
> The idea behind it is to use Map\Reduce more like an application server with
> data location awareness vs batch\parallel processing system.
>
> Thanks.
>