Slow when using parallel ForEach with Correlation

[Christophe Noel <Ch...@spacebel.be>]

Dear all,

I'm quite familiar with Apache Ode (using Intalio BPMS), correlations, loops, but I'm getting some performances lack when using a parallel ForEach with Correlation (see simplified code example below) and would like to get your opinion on my problem.

When I repeatedly invoke a target service (a fast asynchronous web service) using a NON-parallel loop (i.e 20 times), I faslty get the service asynchronous responses using the correlation mechanism.

When I use a parallel loop, I get the first 10 responses immediately, then have to wait more and more (until 1 hour for the last callback) for Apache Ode to handle the response. What is surprising is that the service asynchronous response is already sent some seconds later to the BPEL engine, and Apache Ode requires 1 hour to handle the response and correlate to the foreach task instance.

Is that a known problem in previous version (I'm using Intalio which forks Apache Ode older version) ? Does it also occurs in Apache Ode current version ? Can I solve this problem ?

Thanks for your help.

Code sample :

      <bpel:forEach parallel="yes" counterName="emptyCounter">
      [...]
                <bpel:correlationSets>
            <bpel:correlationSet name="piicorr" properties="this:piiprop"/>
      </bpel:correlationSets>
      [...]
<bpel:invoke>
              <bpel:correlations><bpel:correlation set="piicorr" initiate="yes" pattern="response"/></bpel:correlations>
      </bpel:invoke>
      [...]
      <bpel:receive>
              <bpel:correlations><bpel:correlation set="piicorr" initiate="no"/></bpel:correlations>
</bpel:receive>
</bpel:forEach>

Christophe.






[Description: http://www.spacebel.be/wp-content/uploads/2011/06/image-sign-sbp.jpg]

Christophe Noel
Software Engineer
Rue des Chasseurs Ardennais - Liège Science Park - B-4031 Angleur
Tel: +32 (0) 4 361 81 11 - Fax: +32 (0) 4 361 81 20
www.spacebel.be<http://www.spacebel.be/>



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