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https://issues.apache.org/jira/browse/YARN-5211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Po updated YARN-5211:
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Description: YARN-1051 introduced a ReservationSytem that enables the YARN
RM to handle time explicitly, i.e. users can now "reserve" capacity ahead of
time which is predictably allocated to them. Currently, the ReservationSystem
currently has an implicit FIFO priority. This JIRA tracks effort to generalize
this to arbitrary priority. This is non-trivial as the greedy nature of our
ReservationAgents might need to be revisited if not enough space if found for
late-arriving but higher priority reservations. (was: The ReservationSystem
currently has an implicit FIFO priority. This JIRA tracks effort to generalize
this to arbitrary priority. This is non-trivial as the greedy nature of our
ReservationAgents might need to be revisited if not enough space if found for
late-arriving but higher priority reservations. )
> Supporting "priorities" in the ReservationSystem
> ------------------------------------------------
>
> Key: YARN-5211
> URL: https://issues.apache.org/jira/browse/YARN-5211
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: capacityscheduler, fairscheduler, resourcemanager
> Reporter: Carlo Curino
> Assignee: Sean Po
>
> YARN-1051 introduced a ReservationSytem that enables the YARN RM to handle
> time explicitly, i.e. users can now "reserve" capacity ahead of time which is
> predictably allocated to them. Currently, the ReservationSystem currently has
> an implicit FIFO priority. This JIRA tracks effort to generalize this to
> arbitrary priority. This is non-trivial as the greedy nature of our
> ReservationAgents might need to be revisited if not enough space if found for
> late-arriving but higher priority reservations.
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