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Posted to yarn-issues@hadoop.apache.org by "Rudolf Reti (Jira)" <ji...@apache.org> on 2021/08/11 10:31:00 UTC
[jira] [Updated] (YARN-10505) Extend the maximum-capacity property
to support Fair Scheduler migration
[ https://issues.apache.org/jira/browse/YARN-10505?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rudolf Reti updated YARN-10505:
-------------------------------
Summary: Extend the maximum-capacity property to support Fair Scheduler migration (was: Extend the capacity and maximum-capacity property to support Fair Scheduler migration)
> Extend the maximum-capacity property to support Fair Scheduler migration
> ------------------------------------------------------------------------
>
> Key: YARN-10505
> URL: https://issues.apache.org/jira/browse/YARN-10505
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: capacity scheduler
> Reporter: Benjamin Teke
> Assignee: Benjamin Teke
> Priority: Major
>
> Currently Fair Scheduler supports the following 3 kinds of settings:
> * Single percentage (relative to parent) i.e. "X%"
> * A set of percentages (relative to parent) i.e. "X% cpu, Y% memory"
> * Absolute resources i.e. "X mb, Y vcores"
> Please note, that the new, recommended format does not support the single percentage mode, only the last 2, like: “vcores=X, memory-mb=Y” or “vcores=X%, memory-mb=Y%” respectively.
> Tasks to accomplish:
> # It is recommended that all three formats are supported for maximum-capacity in CS after introducing weight mode.
> # Also we want to introduce the percentage modes relative to the cluster, not the parent, i.e The property root.users.maximum-capacity will mean one of the following things:
> ## Either Parent Percentage: maximum capacity relative to its parent. If it’s set to 50, then it means that the capacity is capped with respect to the parent.
> ## Or Cluster Percentage: maximum capacity expressed as a percentage of the overall cluster capacity.
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