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From "Filipe Manana (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (COUCHDB-1271) Impossible to cancel replications in some scenarios
Date Sat, 17 Sep 2011 05:48:09 GMT

     [ https://issues.apache.org/jira/browse/COUCHDB-1271?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Filipe Manana resolved COUCHDB-1271.
------------------------------------

    Resolution: Fixed

Applied to trunk and branch 1.2.x

> Impossible to cancel replications in some scenarios
> ---------------------------------------------------
>
>                 Key: COUCHDB-1271
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-1271
>             Project: CouchDB
>          Issue Type: Bug
>          Components: Replication
>            Reporter: Filipe Manana
>            Assignee: Filipe Manana
>             Fix For: 1.2
>
>
> In some scenarios it's impossible to cancel a replication by posting to /_replicate,
namely:
> 1) A filtered replication is started, the filter's code is updated in the source database,
therefore's a subsequent cancel request will not generate the old replication ID anymore,
has it got a different filter code;
> 2) Dynamically changing the httpd port will also result in the impossibility of computing
the right replication ID
> Finally, it's also nicer for users to not need to remember the exact replication object
posted before to /_replicate.
> The new approach, in addition to the current approach, allows something as simple as:
> POST /_replicate
> {"replication_id": "0a81b645497e6270611ec3419767a584+continuous+create_target",  "cancel":
true}
> The replication ID can be obtained from a continuous replication request's response (field
"_local_id"), _active_tasks (field "replication_id") or from the log.
> Aliases "_local_id" and "id" are allowed instead of "replication_id".
> Patch:
> https://github.com/fdmanana/couchdb/commit/c8909ea9dbcbc1f52c5c0f87e1a95102a3edfa9f.diff
> (depends on COUCHDB-1266)

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