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https://issues.apache.org/jira/browse/YARN-10531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17271186#comment-17271186
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zhuqi commented on YARN-10531:
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Thanks [~wangda] for final review.
> Be able to disable user limit factor for CapacityScheduler Leaf Queue
> ---------------------------------------------------------------------
>
> Key: YARN-10531
> URL: https://issues.apache.org/jira/browse/YARN-10531
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Wangda Tan
> Assignee: zhuqi
> Priority: Major
> Attachments: YARN-10531.001.patch, YARN-10531.002.patch,
> YARN-10531.003.patch, YARN-10531.004.patch, YARN-10531.005.patch,
> YARN-10531.006.patch, YARN-10531.007.patch
>
>
> User limit factor is used to define max cap of how much resource can be
> consumed by single user.
> Under Auto Queue Creation context, it doesn't make much sense to set user
> limit factor, because initially every queue will set weight to 1.0, we want
> user can consume more resource if possible. It is hard to pre-determine how
> to set up user limit factor. So it makes more sense to add a new value (like
> -1) to indicate we will disable user limit factor
> Logic need to be changed is below:
> (Inside LeafQueue.java)
> {code}
> Resource maxUserLimit = Resources.none();
> if (schedulingMode == SchedulingMode.RESPECT_PARTITION_EXCLUSIVITY) {
> maxUserLimit = Resources.multiplyAndRoundDown(queueCapacity,
> getUserLimitFactor());
> } else if (schedulingMode == SchedulingMode.IGNORE_PARTITION_EXCLUSIVITY)
> {
> maxUserLimit = partitionResource;
> }
> {code}
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