couchdb-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Paul Joseph Davis (JIRA)" <j...@apache.org>
Subject [jira] Updated: (COUCHDB-354) Ungraceful behaviour if view returns a function
Date Sat, 09 Oct 2010 19:45:32 GMT

     [ https://issues.apache.org/jira/browse/COUCHDB-354?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Paul Joseph Davis updated COUCHDB-354:
--------------------------------------

    Skill Level: Regular Contributors Level (Easy to Medium)

> Ungraceful behaviour if view returns a function
> -----------------------------------------------
>
>                 Key: COUCHDB-354
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-354
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: JavaScript View Server
>         Environment: {"couchdb":"Welcome","version":"0.10.0a776990"}
>            Reporter: Brian Candler
>            Priority: Minor
>         Attachments: barf.log, test_reduce_barf.rb
>
>
> If a typo in a view definition causes it to return a function instead of a normal value:
> * the view server crashes
> * you get a huge Erlang barf in the log with worrying messages like "OS process timed
out" and "brutal kill"
> I got all this just by accidentally writing "vs.shift" instead of "vs.shift()"
> The fundamental problem is that a function cannot be serialised in toJSON, but the error
message is not helpful:
> OS Process Log Message: Error converting object to JSON: TypeError: {Array:function (v)
{var ... snip loads ... "Object"] is not a function
> When actually the problem is that the object I was trying to convert *was* a function
:-)
> I will attach some code which replicates this, and the barf generated.
> Of course this is entirely down to user error in an invalid map/reduce function. However
there's already a clean error for 'undefined', maybe this could be done for 'function' too
(or indeed any non-serialisable entity)

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message