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https://issues.apache.org/jira/browse/YARN-2113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15961235#comment-15961235
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Eric Payne commented on YARN-2113:
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Thanks [~sunilg] for the update. I am still reviewing the patch, but I have a
couple of minor things to say right now:
TestProportionalCapacityPreemptionPolicyIntraQueueUserLimit.java:
- Several comments in this file say "... assume minimum user limit factor is
...". This should say "minimum user limit percent". This is a small thing, but
to avoid confusion, I think it's important to make the distinction between
minimum user limit percent and user limit factor.
{code}
* Consider 2 users in a queue, assume minimum user limit factor is 50%.
{code}
- In several tests, the the {{root}} queue does not have values that equal the
sums of the subqueues. For example, in the code below, shouldn't used be 100
and pending be 50? Also, the comment says {{b}} instead of {{a}} for the
queuename.
{code}
String queuesConfig =
// guaranteed,max,used,pending,reserved
"root(=[100 100 55 170 0]);" + // root
"-a(=[100 100 100 30 0])"; // b
{code}
- Also, the {{appsConfig}} often doesn't add up to the correct used numbers in
the {{queuesConfig}}
> Add cross-user preemption within CapacityScheduler's leaf-queue
> ---------------------------------------------------------------
>
> Key: YARN-2113
> URL: https://issues.apache.org/jira/browse/YARN-2113
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: scheduler
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Sunil G
> Attachments:
> TestNoIntraQueuePreemptionIfBelowUserLimitAndDifferentPrioritiesWithExtraUsers.txt,
> YARN-2113.0001.patch, YARN-2113.0002.patch, YARN-2113.0003.patch,
> YARN-2113.0004.patch, YARN-2113.0005.patch, YARN-2113.0006.patch,
> YARN-2113.v0.patch
>
>
> Preemption today only works across queues and moves around resources across
> queues per demand and usage. We should also have user-level preemption within
> a queue, to balance capacity across users in a predictable manner.
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