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https://issues.apache.org/jira/browse/ARTEMIS-2926?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17222176#comment-17222176
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ASF subversion and git services commented on ARTEMIS-2926:
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Commit e2c1848da4a7e44c09f58bbb4c7f6905b7642a7d in activemq-artemis's branch
refs/heads/master from franz1981
[ https://gitbox.apache.org/repos/asf?p=activemq-artemis.git;h=e2c1848 ]
ARTEMIS-2926 Scheduled task executions are skipped randomly
Making Scheduled task to be more reliable when
using scheduledComponent.delay() method and saving
periodic tasks to be skipped although on correct timing
> Scheduled task executions are skipped randomly
> ----------------------------------------------
>
> Key: ARTEMIS-2926
> URL: https://issues.apache.org/jira/browse/ARTEMIS-2926
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Components: Broker
> Affects Versions: 2.13.0
> Reporter: Apache Dev
> Assignee: Francesco Nigro
> Priority: Major
> Time Spent: 3h 40m
> Remaining Estimate: 0h
>
> Scheduled tasks extending {{ActiveMQScheduledComponent}} could randomly skip
> an execution, logging:
> {code}
> Execution ignored due to too many simultaneous executions, probably a
> previous delayed execution
> {code}
> The problem is in the "ActiveMQScheduledComponent#runForExecutor" Runnable.
> Times to be compared ({{currentTimeMillis()}} and {{lastTime}}) are taken
> inside the runnable execution itself. So, depending on relative execution
> times, it could happen that the difference is less than the given period
> (e.g. 1 ms), resulting in a skipped execution.
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