[jira] [Reopened] (CAMEL-5563) ExecutorServiceManager - Should shutdown thread pools less aggressively

["Claus Ibsen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAMEL-5563?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Claus Ibsen reopened CAMEL-5563:
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> ExecutorServiceManager - Should shutdown thread pools less aggressively 
> ------------------------------------------------------------------------
>
>                 Key: CAMEL-5563
>                 URL: https://issues.apache.org/jira/browse/CAMEL-5563
>             Project: Camel
>          Issue Type: Improvement
>          Components: camel-core
>    Affects Versions: 2.10.0
>            Reporter: Claus Ibsen
>            Assignee: Claus Ibsen
>             Fix For: 2.11.0, 2.10.2
>
>
> We have so far favored shutting down thread pools a bit too aggressively from the start using shutdownNow. Instead we should favor shutdown, and allow the pool a bit time to shutdown orderly, before we go aggressively by shutting down now.
> We should also allow end users to configure a await termination timeout value to control how long we wait to orderly shutdown.
> By default this value could be 5 seconds (not too high and not to low).
> Also we should consider allow to configure a log level, which logs the in-flight threads which wasn't shutdown orderly. This can aid people to identify these threads.
> By default we could log this at WARN level. Notice that over time these threads may shutdown naturally when they complete, so its not a severe error. 
> This requires minder API additions to ExeuctorServiceManager. However it ought to be worthy of being backported to the 2.10 branch IMHO

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