[COUCHDB-885] Attachments introduce conflicts after replication.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0.1
• Fix Version/s: 1.0.3, 1.1, 1.2
• Component/s: Database Core

Environment

Mac OSX, Windows XP, Windows 7

• Skill Level: Committers Level (Medium to Hard)
• Assignee: Unassigned
• Reporter: Nikolai Teofilov
• Created: 12/Sep/10 17:51
• Updated: 17/May/11 21:14
• Resolved: 04/Feb/11 22:10

Description

Step to reproduce the bug:

1. Make database "test" on a remote couchdb server that reside on a different machine!
2. Create new document: "http://remote-server:5984/test/doc"
3. Create database "replica" on the local couchdb server.
4. Trigger pull replication http://remote-server:5984/test -> http://localhost:5984/replica
5. Attach a file to the replicated document on the local couchdb server.
6. Trigger push replication http://localhost:5984/replica -> http://remote-server:5984/test

The document in the test database shows one conflict. If instead attachment the document is updated with a new field after the replication no conflict.
The same sequence shows no conflicts on CouchDB 0.11.

• • • • • • • • • • • • test.sh ****************

#!/usr/bin/env bash

LOCAL="http://localhost:5984"
REMOTE="http://koleto.couchone.com"

echo "====================================================="
echo "This sequence create a conflict after the replication"
echo "====================================================="

echo "Cleanup"
curl --silent -X DELETE $LOCAL/replica
curl --silent -X DELETE $REMOTE/test

echo "Create database:" $REMOTE/test
curl --silent -X PUT $REMOTE/test

echo "Create empty document:"
curl --silent -d '{}' -X PUT $REMOTE/test/doc

echo "Create local databse:" $LOCAL/replica
curl --silent -X PUT $LOCAL/replica

echo "Pull replication:" REMOTE/test "->" $LOCAL/replica
curl --silent -X POST -d "

{\"source\":\"$REMOTE/test\",\"target\":\"$LOCAL/replica\"}

" -H 'Content-Type: application/json' $LOCAL/_replicate

echo "Put an attachment to the document:"
echo "foobar!" | curl --silent --upload-file - -X PUT "$LOCAL/replica/doc/foo.txt?rev=1-967a00dff5e02add41819138abb3284d"

echo "Push replication:" $LOCAL/replica "->" $REMOTE/test
curl --silent -X POST -d "

{\"source\":\"$LOCAL/replica\",\"target\":\"$REMOTE/test\"}

" -H 'Content-Type: application/json' $LOCAL/_replicate

echo '############## Get one conflic #####################'
curl --silent -X GET $REMOTE/test/doc?conflicts=true

echo "====================================================="
echo "The same sequence with adding a field to the document"
echo "====================================================="

echo "Cleanup"
curl --silent -X DELETE $LOCAL/replica
curl --silent -X DELETE $REMOTE/test

echo "Create database:" $REMOTE/test
curl --silent -X PUT $REMOTE/test

echo "Create empty document:"
curl --silent -d '{}' -X PUT $REMOTE/test/doc

echo "Create local databse:" $LOCAL/replica
curl --silent -X PUT $LOCAL/replica

echo "Pull replication:" REMOTE/test "->" $LOCAL/replica
curl --silent -X POST -d "

{\"source\":\"$REMOTE/test\",\"target\":\"$LOCAL/replica\"}

" -H 'Content-Type: application/json' $LOCAL/_replicate

echo "Adding a new field:"
curl --silent -d '

{"foo":"bar" , "_rev" : "1-967a00dff5e02add41819138abb3284d" }

' -X PUT $LOCAL/replica/doc?rev=1-967a00dff5e02add41819138abb3284d

echo "Push replication:" $LOCAL/replica "->" $REMOTE/test
curl --silent -X POST -d "

{\"source\":\"$LOCAL/replica\",\"target\":\"$REMOTE/test\"}

" -H 'Content-Type: application/json' $LOCAL/_replicate

echo '###### No conflicts after the replication ########'
curl --silent -X GET $REMOTE/test/doc?conflicts=true

Issue Links

• relates to: COUCHDB-902 Attachments that have recovered from conflict do not accept attachments.