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YARN-6764. Simplify the logic in FairScheduler#attemptScheduling. Contributed by Yufei Gu. 

(cherry picked from commit 3de47ab5ea)
This commit is contained in:
Yufei Gu 2017-07-09 16:08:37 -07:00
parent 5f603306d8
commit 20a2770d72
1 changed files with 4 additions and 7 deletions
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11
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FairScheduler.java
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@ -1050,16 +1050,13 @@ public class FairScheduler extends
Resource maxResourcesToAssign = Resources.multiply(
node.getUnallocatedResource(), 0.5f);
while (node.getReservedContainer() == null) {
boolean assignedContainer = false;
Resource assignment = queueMgr.getRootQueue().assignContainer(node);
if (!assignment.equals(Resources.none())) {
assignedContainers++;
assignedContainer = true;
Resources.addTo(assignedResource, assignment);
}
if (!assignedContainer) {
if (assignment.equals(Resources.none())) {
break;
}
assignedContainers++;
Resources.addTo(assignedResource, assignment);
if (!shouldContinueAssigning(assignedContainers, maxResourcesToAssign,
assignedResource)) {
break;