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https://issues.apache.org/jira/browse/UIMA-2615?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jim Challenger closed UIMA-2615.
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> Ducc Service Manger: Do exponential backoff of service pingers.
> ---------------------------------------------------------------
>
> Key: UIMA-2615
> URL: https://issues.apache.org/jira/browse/UIMA-2615
> Project: UIMA
> Issue Type: Task
> Components: DUCC
> Reporter: Jim Challenger
> Assignee: Jim Challenger
>
> Frequent pinging of UIMA-AS services buy the DUCC service manager is tickling
> a leak in ActiveMQ resulting in ActiveMQ crashing with OutOfMemory
> Exceptions. Until the underlying cause of the problem is determined and
> resolved, the SM will do exponential back-off of the ping rate. New jobs
> dependent on services reset the affected pingers to a high-rate of ping to
> insure responsiveness. The rate is then doubled up to a max of 32 minutes
> (the threshold for bypassing the OOM is 30 minutes).
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