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https://issues.apache.org/jira/browse/COUCHDB-1363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13170574#comment-13170574
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Filipe Manana commented on COUCHDB-1363:
----------------------------------------

Go ahead Randall, it's a genuine issue. +1
                
> callback invocation for docs added during couch_changes startup can be 
> delayed by race condition
> ------------------------------------------------------------------------------------------------
>
>                 Key: COUCHDB-1363
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-1363
>             Project: CouchDB
>          Issue Type: Bug
>          Components: Database Core
>    Affects Versions: 1.0.3, 1.1.1
>            Reporter: Randall Leeds
>            Assignee: Filipe Manana
>            Priority: Minor
>             Fix For: 1.2, 1.3
>
>         Attachments: 0001-Fix-a-race-condition-starting-replications.patch
>
>
> After subscribing to notifications it's necessary to re-open the #db a so 
> that the header points at all updates for which the updater notifier has 
> already fired events. In practice, this is rarely problematic because the 
> next change will cause everything to catch up, but if a quick burst of 
> changes happens while, e.g., replication is starting the replication can go 
> stale. Detected by intermittent replicator_db js test failures.

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