periodic backup plugin - start/stop every minute

[jje]

Hi folks,

as I've noticed in syslog of jenkins master periodic backup plugin is being run every minute, which is very confusing. As it was configured to run once a day on 8 PM. What is the matter?
I've already tried hard to find related issues but I've rather found nothing. But in different posts(not related to this issue) which actually does print syslogs of jenkins I've noticed same log - every minute the same log - periodic backup plugin is being start/stop.

Can somebody explain me the cause?

Thx in advance!

[jje]

Syslog looks like this.....


Aug 23, 2015 6:50:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Started PeriodicBackup
Aug 23, 2015 6:50:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Finished PeriodicBackup. 1 ms
Aug 23, 2015 6:51:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Started PeriodicBackup
Aug 23, 2015 6:51:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Finished PeriodicBackup. 0 ms
Aug 23, 2015 6:52:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Started PeriodicBackup
Aug 23, 2015 6:52:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Finished PeriodicBackup. 2 ms
Aug 23, 2015 6:53:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Started PeriodicBackup
Aug 23, 2015 6:53:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Finished PeriodicBackup. 1 ms
Aug 23, 2015 6:54:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Started PeriodicBackup
Aug 23, 2015 6:54:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Finished PeriodicBackup. 1 ms
Aug 23, 2015 6:55:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Started PeriodicBackup
Aug 23, 2015 6:55:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Finished PeriodicBackup. 0 ms
Aug 23, 2015 6:56:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Started PeriodicBackup
Aug 23, 2015 6:56:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Finished PeriodicBackup. 0 ms
Aug 23, 2015 6:57:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Started PeriodicBackup
Aug 23, 2015 6:57:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Finished PeriodicBackup. 0 ms
Aug 23, 2015 6:58:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Started PeriodicBackup
Aug 23, 2015 6:58:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Finished PeriodicBackup. 0 ms
Aug 23, 2015 6:59:35 AM hudson.model.AsyncPeriodicWork$1 run
INFORMATION: Started PeriodicBackup
Aug 23, 2015 6:59:35 AM hudson.model.AsyncPeriodicWork$1 run

[jje]

Okay. Solved - this issue has been described in comments on jenkins wiki of this plugin:

https://wiki.jenkins-ci.org/display/JENKINS/PeriodicBackup+Plugin?showComments=true&showCommentArea=true#addcomment

PeriodicBackup is indeed called every minute, and does nothing if it doesn't have to. It is because of how AsyncPeriodicWork works.

One way to avoid it in the future is using new AsyncAperiodicWork introduced in Jenkins 1.410 but the plugin will not work for users of older versions of Jenkins so we don't want to do it right now.