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Posted to issues@beam.apache.org by "Kyle Weaver (Jira)" <ji...@apache.org> on 2022/03/31 23:39:00 UTC

[jira] [Updated] (BEAM-14225) load balance jenkins jobs

     [ https://issues.apache.org/jira/browse/BEAM-14225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kyle Weaver updated BEAM-14225:
-------------------------------
    Status: Open  (was: Triage Needed)

> load balance jenkins jobs
> -------------------------
>
>                 Key: BEAM-14225
>                 URL: https://issues.apache.org/jira/browse/BEAM-14225
>             Project: Beam
>          Issue Type: Improvement
>          Components: testing
>            Reporter: Kyle Weaver
>            Priority: P2
>
> Jenkins can do automatic load balancing for cron jobs that use the "H" syntax [1], but we apply it only sporadically (and often incorrectly) in Beam. For example, the default setting used by all precommit cron jobs and others is currently '0 */6 * * *' [2]. This means "every six hours, starting from exactly 00:00 (UTC)." Which creates load spikes every 6 hours, since all the precommits are run at once, rather than being staggered.
> [1] https://github.com/jenkinsci/jenkins/blob/master/core/src/main/resources/hudson/triggers/TimerTrigger/help-spec.jelly#L40-L41
> [2] https://github.com/apache/beam/blob/4dddaf9c3d70b5b858c16265abee4cdbf0c72631/.test-infra/jenkins/CronJobBuilder.groovy#L40



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