Jens,
In terms of what you describe, I am definitely getting undesired behaviour.
I am using CouchDB 1.1.1 on Mac OS replicating from the same instance,
as well as IrisCouch (1.1.1 on Ubuntu, I think).
Ultimately need this to work on Mobile couchbase, but experimenting with
replication locally first.
I ran:
$ curl -H 'Content-Type: application/json' -X POST
http://localhost:5984/_replicator -d '{"source":
"http://127.0.0.1:5984/dslcollection";, "target":
"http://127.0.0.1:5984/dslcollection-ios"}'
{"ok":true,"id":"f36d2bb4d5bdfd3813eb706130001632","rev":"1-c414a5d61d7164c231777472d087ea56"}
Couchdb logging shows (with packet sniffer to tell me how big the
request/responses are:
[info] [<0.2693.2>] 127.0.0.1 - - 'GET'
/dslcollection/551ffd9dc43cb73c257628d8a31e9e1f/88e2a3606296cc4984b4c6aa9980ad94.jpg?rev=10-d5aa0c311cbfac1b8c7309163625c5d0
200
(This is a 3.5MB GET)
[info] [<0.2692.2>] 127.0.0.1 - - 'PUT'
/dslcollection-ios/551ffd9dc43cb73c257628d8a31e9e1f?new_edits=false 201
(3.5MB PUT payload)
Thanks,
Steve
--
Steven Ringo
Jens Alfke wrote:
No, an attachment is stored only once in the DB file no matter how many
revisions it appears in. The attachment contents are only copied during
compaction.
--Jens [via iPhone]
On Jan 18, 2012, at 6:22 PM, "CGS"<[email protected]> wrote:
Hi Steven,
As far as I know, the attachments are still hardcoded in the document and
so, if the document changes its revision, the new document inherits all the
fields (including its attachments). Therefore, the replication transfers
again the attachment. I suppose this was the way to avoid the loss of the
attachment in case of compaction.
Relatively recently, there was a discussion to make an attachment to be
held only once per database (or even maybe externally, don't remember
exactly), but I have no knowledge of its outcome. Maybe someone more
knowledgeable will be able to give you more details here.
For the time being, my suggestion would be you to use external paths
(usually, they are much smaller) and to transfer the files by an external
script.
CGS
