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https://issues.apache.org/jira/browse/COUCHDB-2822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14910120#comment-14910120
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Panu Horsmalahti commented on COUCHDB-2822:
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The issue might be caused by the target document having "_rev":
"102-e83ff1aefa1bcd7165cc9e8b7e14532d" while the source document has "_rev":
"18-a3159727cf84daf13992d181d25e83de" even though the source document should
containt more updates than the target document. I don't understand why the
target document has such a high revision number. I wonder if npm changed the
revision numbers at some point.
> Replication not replicating every document
> ------------------------------------------
>
> Key: COUCHDB-2822
> URL: https://issues.apache.org/jira/browse/COUCHDB-2822
> Project: CouchDB
> Issue Type: Bug
> Security Level: public(Regular issues)
> Components: Replication
> Reporter: Panu Horsmalahti
>
> I'm replicating the NPM's skimdb from https://skimdb.npmjs.com/registry/ to
> my own, private database. The replication has been working for about a year,
> but it was timed out for a month. Now if I start the replication again, it's
> successfully picking up all the new changes to the database, but not
> replicating any (or almost none?) of the changes for the duration of the
> downtime of the replication.
> Here's the replicator document:
> {code}
> {
> "_id": "registry",
> "_rev": "193-8a190eb314c9ee901eaa4127db02a05b",
> "source": "https://skimdb.npmjs.com/registry";,
> "target": "registry",
> "user_ctx": {
> "name": "root",
> "roles": [
> "_admin"
> ]
> },
> "continuous": true,
> "owner": "root",
> "proxy": "<censored>",
> "create_target": true,
> "_replication_state": "triggered",
> "_replication_state_time": "2015-09-22T09:46:32+03:00",
> "_replication_id": "f357bfe5f63bb9daed6e55e6223ee1b5"
> }
> {code}
> The replication status is:
> Replication https://skimdb.npmjs.com/registry/ to registry 2015-09-22
> 10:27:26 2015-09-22 10:43:14 <0.148.0> Checkpointed source
> sequence 307921, current source sequence 307921, progress 100%
> I can manually check a document which has not been updated to my own
> database, for example the "nan" document. I can see it being changed here:
> https://skimdb.npmjs.com/registry/_changes?descending=true&limit=50000
> {code}
> {"seq":277249,"id":"nan","changes":[{"rev":"18-a3159727cf84daf13992d181d25e83de"}]},
> {code}
> That revision is indeed the latest revision in the source database. The
> document in my database has a different revision id.
> I've tried restarting CouchDB multiple times and recreating the replication
> document. I also tried to create a one-shot (instead of continuous)
> replication while specifying only this particular document, but it was
> reported that there was nothing to be replicated (no missing revs).
> While the database in question is NPM specific, I don't see how this could be
> a NPM issue.
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