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https://issues.apache.org/jira/browse/YUNIKORN-24?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weiwei Yang reassigned YUNIKORN-24:
-----------------------------------
Assignee: Weiwei Yang
> UT compatibility issue with GO 1.13.x
> -------------------------------------
>
> Key: YUNIKORN-24
> URL: https://issues.apache.org/jira/browse/YUNIKORN-24
> Project: Apache YuniKorn
> Issue Type: Test
> Components: test - unit
> Reporter: Wilfred Spiegelenburg
> Assignee: Weiwei Yang
> Priority: Blocker
>
> UT starts to fail on flag after upgrade GO to 1.13.x.
> This seems to be caused by us relying on undefined behaviour and fixes in the
> go language.
> Calling {{flag.Parse()}} in an init is considered an incorrect behaviour.
> This is part of the 1.13 release notes:
> [https://tip.golang.org/doc/go1.13#testing]
> We currently call {{flag.Parse()}} in the init of the {{SchedulerConf}} which
> we need to change.
> * not to use {{init()}} functions, the cost of convenience is some
> un-expected behaviors like this.
> * remove these init functions and replace them with {{sync.once}}
> {{init()}} functions could be problematic. However it is simpler than having
> to check in each location that the package is initialised. Using
> {{sync.once}} could add overhead or wrapping which we do not need. I think we
> need to look at a combination of the two: {{init()}} when we know it is
> package local initialisation only. If we have interaction with other packages
> or optional initialisation use the {{sync.once}}
> This {{flag.Parse()}} is a case of interacting with multiple packages, I
> don't think we will have many more of these cases.
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