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From "Eli Stevens (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COUCHDB-1515) _stats: open_databases and open_os_files are zero if queried with a range-parameter
Date Fri, 16 May 2014 10:59:49 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-1515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13999234#comment-13999234
] 

Eli Stevens commented on COUCHDB-1515:
--------------------------------------

CouchDB 1.5.0 (from the Ubuntu 12.04 LTS ppa built by dch):

http://localhost:15984/_stats/couchdb/open_databases?range=60
{
couchdb: {
open_databases: {
description: "number of open databases",
current: -59,
sum: -59,
mean: 2.966,
stddev: 26.009,
min: -181,
max: 72
}
}
}

Kxepal on IRC says that querying this with ?range= doesn't make sense, since these are absolute
values.  http://wiki.apache.org/couchdb/Runtime_Statistics doesn't call out any keys as being
special, and http://couchdb.readthedocs.org/en/latest/api/server/common.html#stats doesn't
mention range at all. It is unclear what's supposed to happen here.

Querying without range:

{
couchdb: {
open_databases: {
description: "number of open databases",
current: 137,
sum: 137,
mean: 0.028,
stddev: 7.227,
min: -227,
max: 89
}
}
}

Which also doesn't make sense. How is min negative? How is max less than current?



> _stats: open_databases and open_os_files are zero if queried with a range-parameter
> -----------------------------------------------------------------------------------
>
>                 Key: COUCHDB-1515
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-1515
>             Project: CouchDB
>          Issue Type: Bug
>    Affects Versions: 1.2
>         Environment: Mac OS X (built with homebrew), Ubuntu 12.04 Server (build with
build-couchdb)
>            Reporter: Andreas Lappe
>            Priority: Minor
>
> I don't know if this intentionally but I thought it would make sense that couchdb also
reports the number of open databases and files in the last specified rangeā€¦



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