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https://issues.apache.org/jira/browse/YARN-2162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16135652#comment-16135652
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ASF GitHub Bot commented on YARN-2162:
--------------------------------------
Github user flyrain commented on a diff in the pull request:
https://github.com/apache/hadoop/pull/261#discussion_r134311049
--- Diff:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/AllocationFileLoaderService.java
---
@@ -495,17 +496,17 @@ private void loadQueue(String parentName, Element
element,
Element field = (Element) fieldNode;
if ("minResources".equals(field.getTagName())) {
String text = ((Text)field.getFirstChild()).getData().trim();
- Resource val =
+ ResourceConfiguration val =
--- End diff --
The major usage of min share is sorting schedulables and preemption. I
didn't see many cons. In the other side,
the needs for min share as percentage are limited. It shouldn't a common
case that a job/queue says to RM that no matter how much resource you have, I
need at least 10% of them. Make min share as percentage isn't necessary as
well. Hence, we could just leave it alone.
> add ability in Fair Scheduler to optionally configure maxResources in terms
> of percentage
> -----------------------------------------------------------------------------------------
>
> Key: YARN-2162
> URL: https://issues.apache.org/jira/browse/YARN-2162
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler, scheduler
> Reporter: Ashwin Shankar
> Assignee: Yufei Gu
> Labels: scheduler
> Attachments: YARN-2162.001.patch, YARN-2162.002.patch
>
>
> minResources and maxResources in fair scheduler configs are expressed in
> terms of absolute numbers X mb, Y vcores.
> As a result, when we expand or shrink our hadoop cluster, we need to
> recalculate and change minResources/maxResources accordingly, which is pretty
> inconvenient.
> We can circumvent this problem if we can optionally configure these
> properties in terms of percentage of cluster capacity.
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