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Posted to dev@activemq.apache.org by "Timothy Bish (JIRA)" <ji...@apache.org> on 2011/03/09 00:46:59 UTC

[jira] Commented: (AMQ-3199) CRON next scheduled time incorrectly calculated

    [ https://issues.apache.org/jira/browse/AMQ-3199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13004289#comment-13004289 ] 

Timothy Bish commented on AMQ-3199:
-----------------------------------

Ok, now I see what you are running into.  Missed in the description that it was the second time around that was causing the issue, think the extra 60 second discussion confused me.  I can fix the problem with the day being wrong but having look more closely at the code I see where it can go wrong with other crontab entries.  

> CRON next scheduled time incorrectly calculated
> -----------------------------------------------
>
>                 Key: AMQ-3199
>                 URL: https://issues.apache.org/jira/browse/AMQ-3199
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.5.0
>         Environment: Windows Server 2003 with java 1.6.0_22
>            Reporter: Erik
>            Assignee: Timothy Bish
>             Fix For: 5.5.0
>
>         Attachments: activemq-admin-query.txt, s1.png, s2.jpg
>
>
> A Cron Entry of "50 20 * * 5" with an AMQ_SCHEDULED_DELAY of 61000 (61 seconds) started at 2011-03-04 20:48:24. The last "5" in the Cron Entry specifies only Fridays and 2011-03-04 is a Friday. The cron job ran and set "next scheduled time" to be 2011-03-10 20:50:25. 2011-03-11 is a Thursday. The correct "next scheduled time" should be 2011-03-11 20:50:25; it should be Friday.
> In addition, the reason why I set the delay to 61000 was because with the default delay of 0, the job executes twice with a 60 second interval. I will file a separate issue.
> I believe the Cron Entry has a problem with using asterisks. I tried a Cron Entry of "27 19 1-31 1-12 6" which is a Saturday. It ran at 19:27 and then correctly set the "next scheduled time" to be on the next Saturday. This is a temporary workaround.

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