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From Roberto Gómez <roberto.go...@queres.com>
Subject Re: Folder not found when using CMIS for large batch
Date Fri, 15 Jun 2012 11:37:00 GMT
Hi Mano,

It reminds me of an issue I was suffering and maybe it's related to 
yours 
http://mail-archives.apache.org/mod_mbox/chemistry-dev/201205.mbox/%3C4FABCF7D.9060001%40queres.com%3E

After all the problem was in ussing the wrong cmis binding url.


On 06/15/2012 01:24 PM, Florian Müller wrote:
> Hi Mano,
>
> I have never seen that before.
> It is probably related to the AtomPub link cache. Your upload rate 
> must be really high to cause such a problem.
>
> Try increasing the link cache size with the 
> SessionParameter.CACHE_SIZE_LINKS parameter. The default size is 400.
> I assume you are just using one user and one Session object. If that's 
> the case, you can improve the performance by having a Session object 
> per thread.
> Setting up the Session objects adds overhead. But if you are using it 
> for thousands of requests, the overhead is not significant and you are 
> winning more than you are losing.
>
>
> - Florian
>
>
>> Hi all,
>>
>> We are using CMIS 0.5.0 to connect to an Alfresco 3.4.2 instance. We
>> created a custom web application which uses Alfresco under the covers 
>> using
>> the CMIS API.
>>
>> We also have a web service entry point in our application which is 
>> used by
>> an external party to upload documents. They execute daily batches 
>> against
>> this web service of thousands of documents in 5 threads. Every web 
>> service
>> call then uses CMIS to upload the document to a folder in Alfresco.
>>
>> We noticed that after a while we got CMIS exceptions:
>>
>>
>> org.apache.chemistry.opencmis.commons.exceptions.CmisObjectNotFoundException: 
>>
>>> Unknown object!
>>>         at
>>>
>>> org.apache.chemistry.opencmis.client.bindings.spi.atompub.AbstractAtomPubService.throwLinkException(AbstractAtomPubService.java:230)

>>>
>>>         at
>>>
>>> org.apache.chemistry.opencmis.client.bindings.spi.atompub.ObjectServiceImpl.createDocument(ObjectServiceImpl.java:89)

>>>
>>>         at
>>>
>>> org.apache.chemistry.opencmis.client.runtime.SessionImpl.createDocument(SessionImpl.java:650)

>>>
>>>         at
>>>
>>> be.idewe.park.repository.impl.DocumentRepositoryImpl.createDocument(DocumentRepositoryImpl.java:64)

>>>
>>>         at
>>>
>>> be.idewe.park.service.impl.DocumentServiceImpl.uploadDocument(DocumentServiceImpl.java:102)

>>>
>>>         ... 57 more
>>
>>
>>
>> It seems that CMIS suddenly cannot find the folder anymore in which 
>> we want
>> to upload the document. It still exists though. Extra logging also shows
>> that the correct folder ID is still passed to the CMIS call. Has anybody
>> had any experience with this and a lot of (simultaneous) document 
>> creations
>> through CMIS?
>>
>> When navigating through the ObjectServiceImpl class I see that 
>> fetching of
>> the folder fails and that it uses a cache whenever possible to 
>> retrieve the
>> link. I see some kind of lock mechanism in the code to read this cache.
>> Could that be a potential problem?
>>
>> Any advice or insights would be greatly appreciated.
>>
>> Kind regards,
>>
>> Mano Swerts
>


-- 
Roberto Gómez López
Queres Tecnologías
http://www.queres.es
Tlf. +34 981 90 90 10

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