Bug 190255 - Job delayed after using crontab -e
Job delayed after using crontab -e
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: vixie-cron (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Marcela Mašláňová
Brock Organ
Depends On:
Blocks: 190430
  Show dependency treegraph
Reported: 2006-04-29 08:42 EDT by Jose Plans
Modified: 2007-11-30 17:07 EST (History)
1 user (show)

See Also:
Fixed In Version: RHBA-2007-0122
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2007-04-18 09:13:53 EDT
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Patch fixing delays on vixie-cron 4.x job execution (775 bytes, patch)
2006-04-29 08:42 EDT, Jose Plans
no flags Details | Diff

  None (edit)
Description Jose Plans 2006-04-29 08:42:04 EDT
Description of problem:
Vixie-cron versions 4.x delay the execution of new updated jobs.
If one user edits its cron table at time 0:00, cron wont update its informations
on the first loop but after it, delaying the execution of the task by 1 loop.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Use an account.
2. Edit its crontab. crontab -e, adding a job (for example * * * * * user
/bin/ls /tmp)
3. Wait for the job to be executed.
Actual results:
The job is executed later than expected :

Apr 13 10:00:10 chancroid crontab[3929]: (ctatman) END EDIT (ctatman)
Apr 13 10:00:10 chancroid crontab[3941]: (ctatman) LIST (ctatman)
Apr 13 10:01:01 chancroid crond[3944]: (root) CMD (run-parts /etc/cron.hourly)
Apr 13 10:01:01 chancroid crond[1537]: (ctatman) RELOAD (cron/ctatman)
Apr 13 10:02:01 chancroid crond[3954]: (ctatman) CMD (user  /bin/ls /tmp/)

The job is delayed by 1 minute.

Expected results:

/var/log/cron with vixie-cron-4.1-11test.EL3 installed:
Apr 26 16:11:11 chancroid crontab[10985]: (ctatman) BEGIN EDIT (ctatman)
Apr 26 16:11:33 chancroid crontab[10985]: (ctatman) REPLACE (ctatman)
Apr 26 16:11:33 chancroid crontab[10985]: (ctatman) END EDIT (ctatman)
Apr 26 16:11:33 chancroid crontab[10989]: (ctatman) LIST (ctatman)
Apr 26 16:12:01 chancroid crond[1486]: (ctatman) RELOAD (cron/ctatman)
Apr 26 16:12:01 chancroid crond[10992]: (ctatman) CMD (ctatman  /bin/ls /tmp/) 

The job is executed in time.

Additional info:

Attached you will find a patch that solves the issue. The main loop has
load_database called too late, and after the job execution tasks; setting it up
after cron_sleep and before find_jobs, I believe, is the right place to populate
the infos to the job descriptions.
Comment 1 Jose Plans 2006-04-29 08:42:05 EDT
Created attachment 128388 [details]
Patch fixing delays on vixie-cron 4.x job execution
Comment 14 Red Hat Bugzilla 2007-04-18 09:13:54 EDT
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


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