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From "Robert Newson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COUCHDB-1652) CouchDB does not release disk space from .deleted files
Date Tue, 31 Mar 2015 21:00:55 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-1652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14389403#comment-14389403
] 

Robert Newson commented on COUCHDB-1652:
----------------------------------------

Hi,

This could be erlang. We (Cloudant) know that R14B01 has a rare bug wherein close a file does
not cause the vm to release the file descriptor. Over time these accumulate. If that's the
cause here, the only solution is to restart the service or upgrade your erlang version.

> CouchDB does not release disk space from .deleted files
> -------------------------------------------------------
>
>                 Key: COUCHDB-1652
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-1652
>             Project: CouchDB
>          Issue Type: Bug
>          Components: Database Core
>    Affects Versions: 1.2
>         Environment: Ubuntu 8.04, 10.04, 12.04 , CouchDB 1.2.0, CouchDB 1.2.1, Erlang
14b4 64bit platform
>            Reporter: Simon Eisenmann
>            Assignee: Randall Leeds
>
> I noticed on long running servers a disk space increase over time. Though the database
in itself did not grow. After investigation i found that there are lots of files still open
which have already been deleted.
> I see this on all installations on Ubuntu 8.04, 10.04 and 12.04 all 64bit with CouchDB
1.2.0 and 1.2.1 with Erlang 14b4.
> lsof |grep deleted
> beam.smp   4845  couchdb   24u      REG              254,1   5890159     171082
> /var/lib/couchdb/.delete/582878aeee568e3c06dc3262fdac494b (deleted)
> beam.smp   4845  couchdb   25u      REG              254,1   5890159     171080
> /var/lib/couchdb/.delete/95b92c25e3d7ea2f2045a2ee37afd8fe (deleted)
> beam.smp   4845  couchdb   26u      REG              254,1   5890183     171081
> /var/lib/couchdb/.delete/bb616c2baae507b7ec890451650e40c9 (deleted)
> beam.smp   4845  couchdb   27u      REG              254,1   5890159     244324
> /var/lib/couchdb/.delete/f7a4ba016d098c34f1ff97ca61a824f8 (deleted)
> beam.smp   4845  couchdb   28u      REG              254,1   5890159     171196
> CouchDB should release the file pointer on those files, to release the disk space to
tools like df.



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