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YARN-8164. Fix a potential NPE in AbstractSchedulerPlanFollower. Contributed by lujie.

This commit is contained in:
Inigo Goiri 2018-04-16 17:32:19 -07:00
parent dd5e18c4ae
commit f1461b2487
1 changed files with 4 additions and 1 deletions
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5
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/AbstractSchedulerPlanFollower.java
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@ -263,7 +263,10 @@ public abstract class AbstractSchedulerPlanFollower implements PlanFollower {
if (shouldMove) {
moveAppsInQueueSync(expiredReservation, defReservationQueue);
}
if (scheduler.getAppsInQueue(expiredReservation).size() > 0) {
List<ApplicationAttemptId> appsInQueue = scheduler.
getAppsInQueue(expiredReservation);
int size = (appsInQueue == null ? 0 : appsInQueue.size());
if (size > 0) {
scheduler.killAllAppsInQueue(expiredReservation);
LOG.info("Killing applications in queue: {}", expiredReservation);
} else {