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https://issues.apache.org/jira/browse/CAMEL-26557?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adriano Machado reassigned CAMEL-26557:
---------------------------------------
Assignee: Adriano Machado
> camel-util - BoundedExecutorService: a task of the executor runs nested work
> inline with the Abort policy too
> -------------------------------------------------------------------------------------------------------------
>
> Key: CAMEL-26557
> URL: https://issues.apache.org/jira/browse/CAMEL-26557
> Project: Camel
> Issue Type: Sub-task
> Reporter: Adriano Machado
> Assignee: Adriano Machado
> Priority: Major
> Fix For: 4.24.0
>
>
> With virtual threads, a parallel split or multicast whose thread pool profile
> uses the Abort rejected policy runs one item fewer at a time than
> maxQueueSize allows.
> The dispatcher task of the split runs in the BoundedExecutorService and
> submits itself again for each item while it holds a permit. CAMEL\-26478 made
> a task of the executor run nested work inline when no permit is free, but
> only with the CallerRuns and Block policies. With Abort the dispatcher still
> waits for a permit while holding one, so one permit is always taken by the
> dispatcher. With maxQueueSize=1 it waits keepAliveTime for the permit it
> holds itself and is then rejected.
> Measured with 10 items of 300 ms, peak items running at once for maxQueueSize
> 1/2/3:
> \- CallerRuns and Block: 1/2/3
> \- Abort: rejected/1/2
> SplitterParallelAsyncProcessorIssueTest fails in virtual mode because of this
> \(5.2 s instead of 2.7 s\), and also because it counts distinct thread names,
> which grow with the number of tasks when every task gets a new virtual thread.
> Proposed fix: a task of the executor runs nested work inline with the Abort
> policy too. A submitter outside the executor still waits and is rejected as
> before, so backpressure does not change. The splitter test measures the items
> running at once instead of thread names.
> _Claude Code on behalf of Adriano Machado \(@ammachado\)_
> _This was generated by an AI agent and may contain inaccuracies. Please
> verify before relying on it._
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