Mount NoSQL DB as File System

I am looking for the way to easily mount one of the NoSQL DB as File System both in Ubuntu 10.04 LTS or CentOs 5

I know there are there are some fuse projects for mongoDB, CouchDB, riak,

But I can't make them compiled nicely and work fine. Do you have 开发者_开发问答a stable and running a File System on them?

I think Riak is the best over them. As it is truly distributed like Cassandra. But I think using BigCouch with Couch-fuse may also work. I just can't make that work fine in my system.

Any easy to install version?

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I can only speak for CouchDB. (as I'm not familiar with the others)

UbuntuOne is a file-sync system (much like Dropbox) that uses CouchDB on the back-end. It's closed-source, but I'm mostly pointing it out as proof-of-concept.

In addition, there is a project out there called couchdb-fuse, which mounts CouchDB design doc attachments as part of the filesystem.

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This question FS based on a database without using fuse has some good advice other than just the discussion about mongodb.