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From "Filipe Manana (JIRA)" <j...@apache.org>
Subject [jira] Created: (COUCHDB-1028) Pull replication by doc-IDs, from a CouchDB version < 1.1.0, no longer works when sent from a CouchDB 1.1.0+ server
Date Tue, 18 Jan 2011 14:56:44 GMT
Pull replication by doc-IDs, from a CouchDB version < 1.1.0, no longer works when sent from
a CouchDB 1.1.0+ server
-------------------------------------------------------------------------------------------------------------------

                 Key: COUCHDB-1028
                 URL: https://issues.apache.org/jira/browse/COUCHDB-1028
             Project: CouchDB
          Issue Type: Bug
          Components: Replication
    Affects Versions: 1.1
            Reporter: Filipe Manana
            Assignee: Filipe Manana
         Attachments: COUCHDB-1028.patch

After BenoƮt added the built-in _changes filter _doc_ids to trunk (and now in 1.1.x as well),
I updated the replicator to use it for the replication by doc-IDs. The advantages of this
are:

1) Elimination of very specific, and harder to maintain, code from several replicator modules;
2) Allow for continuous by doc-IDs replication (this was not possible before because a replication
by doc-IDs didn't use the _changes stream at all)

The change was done in the following commit:

https://github.com/apache/couchdb/commit/5afece2131f4ef4000d768b671bddbbf714303d9

It happens that with the branch 1.1.x (and trunk as well), it's no longer possible to pull
replicate by doc-IDs from previous CouchDB versions (since they don't have that new built-in
filter).

The following patch fixes the issue by changing only 1 module of the replicator. If no objections,
I'll commit it later.



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