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YARN-7681. Double-check placement constraints in scheduling phase before actual allocation is made. (Weiwei Yang via asuresh)

This commit is contained in:
Arun Suresh 2018-01-10 09:04:30 -08:00
parent bdba01f73b
commit 4eda58c136
1 changed files with 23 additions and 0 deletions
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23
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacityScheduler.java
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@ -124,6 +124,8 @@ import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.ResourceCo
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.SchedulerContainer;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.fica.FiCaSchedulerApp;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.fica.FiCaSchedulerNode;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.constraint.InvalidAllocationTagsQueryException;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.constraint.PlacementConstraintsUtil;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.AppAddedSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.AppAttemptAddedSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.AppAttemptRemovedSchedulerEvent;
@ -2574,6 +2576,27 @@ public class CapacityScheduler extends
ResourceCommitRequest<FiCaSchedulerApp, FiCaSchedulerNode>
resourceCommitRequest = createResourceCommitRequest(
appAttempt, schedulingRequest, schedulerNode);
// Validate placement constraint is satisfied before
// committing the request.
try {
if (!PlacementConstraintsUtil.canSatisfyConstraints(
appAttempt.getApplicationId(),
schedulingRequest.getAllocationTags(),
schedulerNode,
rmContext.getPlacementConstraintManager(),
rmContext.getAllocationTagsManager())) {
LOG.debug("Failed to allocate container for application "
+ appAttempt.getApplicationId() + " on node "
+ schedulerNode.getNodeName()
+ " because this allocation violates the"
+ " placement constraint.");
return false;
}
} catch (InvalidAllocationTagsQueryException e) {
LOG.warn("Unable to allocate container", e);
return false;
}
return tryCommit(getClusterResource(), resourceCommitRequest, false);
}
}