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From Robert Newson <rnew...@apache.org>
Subject Re: Strange caching
Date Sat, 11 Aug 2012 22:52:48 GMT

By chance are you using an editor like emacs that makes foo~ style backup files? I found that
couchapp would find the ~ backup file and not the latest version.

B.

On 11 Aug 2012, at 23:18, Andrew Melo wrote:

> On Sat, Aug 11, 2012 at 5:11 PM, Andrew Melo <andrew.melo@gmail.com> wrote:
>> Hey all,
>> 
>> I'm at my wits end here trying to figure this out, maybe someone can help.
>> 
>> I have a view with a map function and a database with one document.
>> The view just looks for if doc['state'] is 'failed' or 'done' and if
>> there is, it emits a value. A previous version of the view only
>> checked for 'done'. If it helps, I'm running these tests in a unittest
>> which deletes the database after every test case, and i've also
>> manually deleted the database from futon to be extra-sure that it's
>> gone and any state's been blown away.
>> 
>> Now, if my document has state = done, the view correctly shows the one
>> row. However, if state = false, the view emits zero rows. I've added
>> some log() statements into the branch that should be executed if the
>> doc fails the state test, and it's not executed. It seems like somehow
>> an old old version of the view has been cached somewhere. Stranger,
>> the docs contain timestamps, so the hashes should be different in
>> every invocation, so if my understanding of how the view caching
>> works, this shouldn't be cached at all.
>> 
>> Strangely, if I go to futon, select the offending view, hit the "view
>> code" function and insert whitespace, it returns the correct value.
>> 
>> Is there some strange bug I'm triggering or is this a known feature?
>> I've pasted my view and my doc below.
> 
> I guess I should add that this is part of a couchapp, I'm running the
> CouchBase OSX binaries and this is replicatable across invocations
> (i.e. delete the database, shutdown server, restart server, run test)
> 
>> 
>> Thanks in advance,
>> Andrew
>> 
>> my view:
>> function complete_job(doc) {
>>        if ( (doc['state'] == 'failed' )  || ( doc['state'] == 'done' ) ) {
>>                return true;
>>        }
>>        log( doc );
>>        log(doc['state']);
>>        return false;
>> 
>> }
>> function(doc) {
>>        if(doc.lfn && complete_job(doc)){
>>                emit(doc.last_update, {"lfn": doc.lfn, "workflow": doc.workflow,
>> "location": doc.destination, "checksum": doc.checksums, "jobid":
>> doc.jobid, "retry_count": doc.retry_count.length+1, "size": doc.size,
>> "state" : doc.state});
>>        }
>> }
>> 
>> My document:
>> {
>>   "_id": "e5c47962375981dd336c2bc8d4a94208375935f06868847f3363daaa",
>>   "_rev": "2-7a50be4c10264ab4fb94a5bbf489dcfc",
>>   "inputdataset": "",
>>   "lfn": "/store/user/meloam/T2stop_600_50_0_5test/MeloAcquisitionEra/IntegrationTest_120810/00000/B4749FB5-38E3-E111-ADC3-782BCB4FBD6F.root",
>>   "checksums": {
>>       "adler32": "5759a594",
>>       "cksum": "468777326"
>>   },
>>   "size": 2432988,
>>   "group": "",
>>   "destination": "T1_US_FNAL_Buffer",
>>   "last_update": 1344722369,
>>   "source": "T2_US_Vanderbilt",
>>   "state": "failed",
>>   "role": "",
>>   "dbSource_url": "http://127.0.0.1:5984",
>>   "dn": "None",
>>   "workflow": "meloam_ASYNCTEST1_120810_170823_8981",
>>   "timestamp": 1344722369,
>>   "start_time": "2012-08-11 16:59:29.754080",
>>   "job_end_time": 1342768166,
>>   "dbs_url": null,
>>   "publication_retry_count": [
>>   ],
>>   "user": "T2stop_600_50_0_5test",
>>   "dbSource_update": 1342768166,
>>   "publication_state": "not_published",
>>   "task": "/meloam_MeloMCGenTestv6_120719_204741_1342/Production",
>>   "jobid": "a9a04888-d239-11e1-b31b-001d7d020436-0",
>>   "retry_count": [
>>       "2012-08-11 16:59:29.963710"
>>   ],
>>   "publish_dbs_url": "",
>>   "end_time": "2012-08-11 16:59:29.963710"
>> }
>> 
>> --
>> --
>> Andrew Melo
> 
> 
> 
> -- 
> --
> Andrew Melo


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