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YARN-7051. Avoid concurrent modification exception in FifoIntraQueuePreemptionPlugin. Contributed by Eric Payne.

This commit is contained in:
Sunil G 2017-08-28 12:22:56 +05:30
parent ae7abad3d9
commit 02599bda04
1 changed files with 17 additions and 9 deletions
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10
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/capacity/FifoIntraQueuePreemptionPlugin.java
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@ -397,10 +397,16 @@ public class FifoIntraQueuePreemptionPlugin
ResourceUsage userResourceUsage = tq.leafQueue.getUser(userName)
.getResourceUsage();
// perUserAMUsed was populated with running apps, now we are looping
// through both running and pending apps.
Resource userSpecificAmUsed = perUserAMUsed.get(userName);
amUsed = (userSpecificAmUsed == null)
? Resources.none() : userSpecificAmUsed;
TempUserPerPartition tmpUser = new TempUserPerPartition(
tq.leafQueue.getUser(userName), tq.queueName,
Resources.clone(userResourceUsage.getUsed(partition)),
Resources.clone(perUserAMUsed.get(userName)),
Resources.clone(userSpecificAmUsed),
Resources.clone(userResourceUsage.getReserved(partition)),
Resources.none());
@ -547,6 +553,7 @@ public class FifoIntraQueuePreemptionPlugin
Collection<FiCaSchedulerApp> runningApps = leafQueue.getApplications();
Resource amUsed = Resources.createResource(0, 0);
synchronized (leafQueue) {
for (FiCaSchedulerApp app : runningApps) {
Resource userAMResource = perUserAMUsed.get(app.getUser());
if (null == userAMResource) {
@ -557,6 +564,7 @@ public class FifoIntraQueuePreemptionPlugin
Resources.addTo(userAMResource, app.getAMResource(partition));
Resources.addTo(amUsed, app.getAMResource(partition));
}
}
return amUsed;
}