Author: tomwhite Date: Thu Jan 3 15:07:22 2013 New Revision: 1428387 URL: http://svn.apache.org/viewvc?rev=1428387&view=rev Log: YARN-300. After YARN-271, fair scheduler can infinite loop and not schedule any application. Contributed by Sandy Ryza.
Modified: hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt hadoop/common/trunk/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 Modified: hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt URL: http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt?rev=1428387&r1=1428386&r2=1428387&view=diff ============================================================================== --- hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt (original) +++ hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt Thu Jan 3 15:07:22 2013 @@ -161,6 +161,9 @@ Release 2.0.3-alpha - Unreleased YARN-288. Fair scheduler queue doesn't accept any jobs when ACLs are configured. (Sandy Ryza via tomwhite) + YARN-300. After YARN-271, fair scheduler can infinite loop and not + schedule any application. (Sandy Ryza via tomwhite) + Release 2.0.2-alpha - 2012-09-07 INCOMPATIBLE CHANGES Modified: hadoop/common/trunk/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 URL: http://svn.apache.org/viewvc/hadoop/common/trunk/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?rev=1428387&r1=1428386&r2=1428387&view=diff ============================================================================== --- hadoop/common/trunk/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 (original) +++ hadoop/common/trunk/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 Thu Jan 3 15:07:22 2013 @@ -760,7 +760,7 @@ public class FairScheduler implements Re // Otherwise, schedule at queue which is furthest below fair share else { int assignedContainers = 0; - while (true) { + while (node.getReservedContainer() == null) { // At most one task is scheduled each iteration of this loop List<FSLeafQueue> scheds = new ArrayList<FSLeafQueue>( queueMgr.getLeafQueues());