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https://issues.apache.org/jira/browse/UIMA-5960?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerry Cwiklik closed UIMA-5960.
-------------------------------
    Resolution: Fixed

Client no longer waits if its out of tasks. The waiting has been moved to 
service

> UIMA-DUCC: Modify pull service to synchronize threads 
> ------------------------------------------------------
>
>                 Key: UIMA-5960
>                 URL: https://issues.apache.org/jira/browse/UIMA-5960
>             Project: UIMA
>          Issue Type: Bug
>          Components: DUCC
>            Reporter: Jerry Cwiklik
>            Assignee: Jerry Cwiklik
>            Priority: Major
>             Fix For: 3.0.0-Ducc
>
>
> Pull service is not polling for tasks correctly. Currently it allows threads 
> to send GET requests concurrently. With many services running each with many 
> threads the driver may get easily overrun. 
> Instead each service should allow one GET request at a time. So there is only 
> one thread pulling task at a time. Other threads block until a thread 
> receives a task. If no task is given, a single thread will retry until a task 
> becomes available or service is stopped. There will be no waiting on the 
> driver/client side. 



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