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From "Damien Katz (JIRA)" <j...@apache.org>
Subject [jira] Commented: (COUCHDB-863) be quiet about dropping invalid references
Date Fri, 20 Aug 2010 14:29:15 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12900706#action_12900706
] 

Damien Katz commented on COUCHDB-863:
-------------------------------------

This sounds like a deeper bug. Under what circumstances does it attempt to drop references
and it's already closed??

> be quiet about dropping invalid references
> ------------------------------------------
>
>                 Key: COUCHDB-863
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-863
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: Database Core
>    Affects Versions: 1.0.1
>            Reporter: Randall Leeds
>            Priority: Trivial
>
> couch_ref_counter:drop will complain, dying with noproc, if the reference counter does
not exist. Since dropping a reference to a non-existent process isn't exactly an error I think
we should squelch this one. I hate log noise and I've noticed this pop up in the logs a bunch,
especially running the test suite. Extra noise doesn't make debugging easier and it could
confuse people trying to solve real problems.
> Trivial, trivial patch unless I'm missing something really silly. I'll save everyone
the extra emails from JIRA and just paste it here.
> diff --git a/src/couchdb/couch_ref_counter.erl b/src/couchdb/couch_ref_counter.erl
> index 5a111ab..1edc474 100644
> --- a/src/couchdb/couch_ref_counter.erl
> +++ b/src/couchdb/couch_ref_counter.erl
> @@ -24,7 +24,9 @@ drop(RefCounterPid) ->
>      drop(RefCounterPid, self()).
>  
>  drop(RefCounterPid, Pid) ->
> -    gen_server:call(RefCounterPid, {drop, Pid}).
> +    try gen_server:call(RefCounterPid, {drop, Pid})
> +    catch exit:{noproc, _} -> ok
> +    end.
>  
>  
>  add(RefCounterPid) ->

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