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From "Chris Anderson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (COUCHDB-791) Changes not written if server shutdown during delayed_commits period
Date Mon, 14 Jun 2010 17:11:13 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12878639#action_12878639
] 

Chris Anderson commented on COUCHDB-791:
----------------------------------------

On IRC we discussed this and came up with 2 robust options:

1 is to have `couchdb -d` configure the server to delayed_commits=false for a few seconds
before shutdown

2 is to call an os level `sync` command after shutdown, to ensure that anything written but
not flushed, is flushed.

I don't know enough about 2, but if it is actually robust, it might be simpler than 1.

> Changes not written if server shutdown during delayed_commits period
> --------------------------------------------------------------------
>
>                 Key: COUCHDB-791
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-791
>             Project: CouchDB
>          Issue Type: Bug
>    Affects Versions: 0.11.1
>         Environment: Linux (Ubuntu 10.04)
>            Reporter: Matt Goodall
>
> If the couchdb server is shutdown (couchdb -d, Ctrl+C at the console, etc) during the
delayed commits period then buffered updates are lost.
> Simple script to demonstrate the problem is:
> db=http://localhost:5984/scratch
> curl $db -X DELETE
> curl $db -X PUT
> curl $db -X POST -d '{}'
> /path/to/couchdb/bin/couchdb -d
> When couchdb is started again the database is empty.
> Affects 0.11.x and trunk branches.

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