[jira] Updated: (COUCHDB-704) Replication can lose checkpoints

["Randall Leeds (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/COUCHDB-704?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Randall Leeds updated COUCHDB-704:
----------------------------------

    Affects Version/s: 0.11
                       0.10.2
                           (was: 0.12)

> Replication can lose checkpoints
> --------------------------------
>
>                 Key: COUCHDB-704
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-704
>             Project: CouchDB
>          Issue Type: Bug
>          Components: Replication
>    Affects Versions: 0.10.2, 0.11
>            Reporter: Randall Leeds
>            Priority: Minor
>         Attachments: save-all-rep-checkpoints.patch, whitespace.patch
>
>   Original Estimate: 0h
>  Remaining Estimate: 0h
>
> When saving replication checkpoints in the _local/<repid> document the new entry is always pushed onto the _original_ "history" list property that existed at the start of the replication. When any number of things causes the checkpoint to be written to only one of the databases the head of the history list gets out of sync. Subsequent attempts to start this replication must start from the latest common replication log entry in the _original_ history, as though this replication never occurred.
> A better idea is to push every checkpoint onto the history instead of replacing the head on each save.

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