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https://issues.apache.org/jira/browse/UIMA-5640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerry Cwiklik closed UIMA-5640.
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Resolution: Duplicate
Duplicate of https://issues.apache.org/jira/browse/UIMA-5866 and
https://issues.apache.org/jira/browse/UIMA-5756. The UIMA-5866 adds support for
waiting on the service side when a client is a JD. The UIMA-5756 implements no
wait strategy when a client is not a JD.
> UIMA-DUCC: JP/Service wrapper should not sleep when Work Item is not available
> ------------------------------------------------------------------------------
>
> Key: UIMA-5640
> URL: https://issues.apache.org/jira/browse/UIMA-5640
> Project: UIMA
> Issue Type: Improvement
> Components: DUCC
> Reporter: Jerry Cwiklik
> Assignee: Jerry Cwiklik
> Priority: Major
> Fix For: 2.2.3-Ducc
>
>
> Currently when JD/Protocol Handler runs out of work it returns null back in
> response to GET. In this case, the service wrapper sleeps for a fixed amount
> of time and tries again. The sleeping should be done in the client
> (JD/Protocol Handler) to reduce latency. Instead of waiting for a fixed
> amount of time, the client code can use notification/interrupt to wake up a
> sleeping GET thread when a new work items becomes available. The service
> wrapper will block in http get request until a reply comes or the get request
> times out. On timeout, the service will immediately call the client
> (JD/Protocol Handler).
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