[jboss-jira] [JBoss JIRA] (WFLY-6540) Batch thread pool keepAlive setting seems to be ignored

[Martin Kouba (JIRA)]

Martin Kouba created WFLY-6540:
----------------------------------

             Summary: Batch thread pool keepAlive setting seems to be ignored
                 Key: WFLY-6540
                 URL: https://issues.jboss.org/browse/WFLY-6540
             Project: WildFly
          Issue Type: Bug
          Components: Batch
    Affects Versions: 10.0.0.Final
            Reporter: Martin Kouba
            Assignee: Cheng Fang


Maybe I'm missing something but although the default _keepAlive_ is set to 30 seconds, the threads seem to run indefinitely - see also steps to reproduce.

Snippet from the default config file:
{code}
<thread-pool name="batch">
    <max-threads count="10"/>
    <keepalive-time time="30" unit="seconds"/>
</thread-pool>
{code}

Anyway, the {{UnboundedQueueThreadPoolService}}, or the underlying {{JBossThreadPoolExecutor}} respectively, used by the Batch subsystem is using the same {{corePoolSize}} and {{maximumPoolSize}} and it seems the core threads are not allowed to time out, i.e. {{org.jboss.threads.JBossThreadPoolExecutor.setAllowCoreThreadTimeout(boolean)}} is not used. 

Moreover, a {{JBossThreadPoolExecutor.setAllowCoreThreadTimeout(boolean)}} invocation would probably result in infinite loop:
{code}
public void setAllowCoreThreadTimeout(final boolean allow) {
        setAllowCoreThreadTimeout(allow);
}
{code}
should be replaced with:
{code}
public void setAllowCoreThreadTimeout(final boolean allow) {
        allowCoreThreadTimeOut(allow);
}
{code}

Given that {{JBossThreadPoolExecutor}} is used by more subsystems this issue may affect other subsystems as well.



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