Mike Wallace created COUCHDB-2949:
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             Summary: Replications which fail to start dump creds into the logs
                 Key: COUCHDB-2949
                 URL: https://issues.apache.org/jira/browse/COUCHDB-2949
             Project: CouchDB
          Issue Type: Bug
          Components: Replication
            Reporter: Mike Wallace


If a replication fails to start then the `#rep` record is logged [1]. This can 
contain credentials in either the source or target `#httpdb` records, either in 
urls or the authorization header.

This can be reproduced by posting a replication document which specifies a 
replication from a database that doesn't exist and following the logs, e.g.: 
https://gist.github.com/mikewallace1979/757a48bce6b84fbf080c

Note that the creds are exposed both when they are in the source/target url or 
in the `Authorization` header.

[1] 
https://github.com/apache/couchdb-couch-replicator/blob/master/src/couch_replicator.erl#L519-L520



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