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https://issues.apache.org/jira/browse/COUCHDB-2492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14736612#comment-14736612
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Robert Newson commented on COUCHDB-2492:
----------------------------------------

I don't think we should do this on the clustered interface. Like BigCouch, we 
should continue to direct admins to use the backend, per-node interface. 
Compacting all shards of a db or view at once on all nodes is a significantly 
bigger event than it is in couchdb before 2.0. While we do have the io 
regulator, there will still be an impact.

At least for 2.0, I would rather we didn't do this work. The compaction daemon 
should be used instead. Compaction is a node-local issue imo.

> Fauxton: Compact Databases & Compact View does not work on 2.0
> --------------------------------------------------------------
>
>                 Key: COUCHDB-2492
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-2492
>             Project: CouchDB
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>          Components: BigCouch, Fauxton
>            Reporter: Robert Kowalski
>            Priority: Blocker
>
> Select a database, select "Compact & Clean", press the button "compact": 
> You'll get:
> Error: Compaction must be triggered on a per-shard basis in CouchDB



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