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https://issues.apache.org/jira/browse/YARN-5329?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16157893#comment-16157893
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Carlo Curino commented on YARN-5329:
------------------------------------

Thanks @subru for the feedback. 

# Regarding {{recurrenceExpression}} in {{PlanningAlgorithm}} it is never null 
by design (see {{ReservationDefinitionPBImpl.getRecurrenceExpression()}} is set 
to "0" if there is no recurrence), so I think the null check is redundant 
(unless we assume other non-PBImpl implementations will be used in the future).
# This is not really a base tests, as we already had substantial tests in the 
specific per-agents tests, which checks for specific corner cases. Migrating 
those would be a delicate/painful, so this test was added, to provide a broader 
"lots of noisy allocations" type experiments, which in my experience are good 
to exercise a larger portion of the codebase and capture hard-to-spot 
multi-reservation scenarios.
# done

Tests pass locally when YARN-5330 is applied (but lets see what YETUS says when 
that one is in)

> ReservationAgent enhancements required to support recurring reservations in 
> the YARN ReservationSystem
> ------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-5329
>                 URL: https://issues.apache.org/jira/browse/YARN-5329
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Subru Krishnan
>            Assignee: Carlo Curino
>         Attachments: YARN-5329.v0.patch, YARN-5329.v1.patch, 
> YARN-5329.v2.patch, YARN-5329.v3.patch
>
>
> YARN-5326 proposes adding native support for recurring reservations in the 
> YARN ReservationSystem. This JIRA is a sub-task to track the changes required 
> in ReservationAgent to accomplish it. Please refer to the design doc in the 
> parent JIRA for details.



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