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From Adam Kocoloski <kocol...@apache.org>
Subject Re: Idea for View & Bulk Insert combination for ad-hoc database changes
Date Mon, 19 Apr 2010 23:30:44 GMT
On Apr 19, 2010, at 6:09 PM, J Chris Anderson wrote:

> On Apr 19, 2010, at 12:49 PM, Randall Leeds wrote:
> 
>> Ad-hoc db-wide transformations suddenly strike me as a generic form of the
>> compactor. The compactor is an identity update function. It achieves a full
>> scan of the db by putting results in a new .couch file. It runs until it has
>> caught up to the tail of the current file (using a changes listener) and
>> then swaps the files. I believe a good patch here is one that creates a code
>> path the compactor can share.
>> 
>> The side bonus is that this implementation is transactional.
> 
> Hmm, interesting thinking.
> 
> As long as we are talking about future compactor features, one that will be handy once
Couch has built-in sharding, is the ability to compact from 1 db file to 2 (or more) db files.

1 (or more) of which may live on remote nodes.  Best,

Adam


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