[
https://issues.apache.org/jira/browse/YARN-6769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
daemon updated YARN-6769:
-------------------------
Comment: was deleted
(was:
{code:java}
diff --git
a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/policies/FairSharePolicy.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/policies/FairSharePolicy.java
index f8cdb45929..e930b80e45 100644
---
a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/policies/FairSharePolicy.java
+++
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/policies/FairSharePolicy.java
@@ -79,6 +79,19 @@ public String getName() {
@Override
public int compare(Schedulable s1, Schedulable s2) {
+ Resource demand1 = s1.getDemand();
+ Resource demand2 = s2.getDemand();
+ // Put the schedulable which does not require resource to
+ // the end. So the other schedulable can get resource as soon as
+ // possible though it use resource greater then it minShare or demand.
+ if (demand1.equals(Resources.none()) &&
+ !demand2.equals(Resources.none())) {
+ return 1;
+ } else if (demand2.equals(Resources.none()) &&
+ !demand1.equals(Resources.none())) {
+ return -1;
+ }
+
double minShareRatio1, minShareRatio2;
double useToWeightRatio1, useToWeightRatio2;
double weight1, weight2;
@@ -86,9 +99,9 @@ public int compare(Schedulable s1, Schedulable s2) {
Resource resourceUsage1 = s1.getResourceUsage();
Resource resourceUsage2 = s2.getResourceUsage();
Resource minShare1 = Resources.min(RESOURCE_CALCULATOR, null,
- s1.getMinShare(), s1.getDemand());
+ s1.getMinShare(), demand1);
Resource minShare2 = Resources.min(RESOURCE_CALCULATOR, null,
- s2.getMinShare(), s2.getDemand());
+ s2.getMinShare(), demand2);
boolean s1Needy = Resources.lessThan(RESOURCE_CALCULATOR, null,
resourceUsage1, minShare1);
boolean s2Needy = Resources.lessThan(RESOURCE_CALCULATOR, null,
{code}
)
> Put the no demand queue after the most in FairSharePolicy#compare
> -----------------------------------------------------------------
>
> Key: YARN-6769
> URL: https://issues.apache.org/jira/browse/YARN-6769
> Project: Hadoop YARN
> Issue Type: Bug
> Components: fairscheduler
> Affects Versions: 2.7.2
> Reporter: daemon
> Priority: Minor
> Fix For: 2.9.0
>
>
> When use fairsheduler as RM scheduler, before assign container we will sort
> all queues or applications.
> We will use FairSharePolicy#compare as the comparator， but the comparator is
> not so perfect.
> It have a problem as blow:
> 1. when a queue use resource over minShare(minResources), it will put behind
> the queue whose demand is zeor.
> so it will greater opportunity to get the resource although it do not want.
> It will waste schedule time when assign container
> to queue or application.
> I have fix it, and I will upload the patch to the jira.
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