Jerry Cwiklik created UIMA-4881:
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Summary: UIMA DUCC: Optimize JP handling of no work from the JD
Key: UIMA-4881
URL: https://issues.apache.org/jira/browse/UIMA-4881
Project: UIMA
Issue Type: Improvement
Reporter: Jerry Cwiklik
Assignee: Jerry Cwiklik
Fix For: 2.1.0-Ducc
When a JD returns no work, each worker JP thread sleeps for a bit and than asks
JD again. At large scaleout many threads repeat this cycle causing the JD to
spend a lot of time handling WI requests.
Modify the JP to use a single thread in each process to retry request for work.
While a single thread repeatedly retries other threads block until:
1) Retry thread receives work item
2) JP terminates
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