Running Map/Reduce to a different server db

[Alan Williamson]

We have a very large Mongo collection and would like to run a map/reduce but instead of putting those results into a collection on the same server, we would like to put the results into a remote server.

Is this possible?

[Jeremy Mikola]

On Friday, October 12, 2012 12:19:46 PM UTC-4, Alan Williamson wrote:

We have a very large Mongo collection and would like to run a map/reduce but instead of putting those results into a collection on the same server, we would like to put the results into a remote server.

Is this possible?

This is not currently supported by any of the mapreduce command's existing output options.

A similar question was asked regarding the MongoDB Hadoop connector (http://stackoverflow.com/q/9965427/162228), where a RDMS was the desired output. It seems possible by specifying a separate output format class on Hadoop's end, although I'm unsure how easily the solution would translate to specifying another MongoDB server for output.

[Sam Millman]

You can specify another DB on the same server though so that could be a route to go maybe? Then you can replicate that db/collection to the other server

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