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YARN-300. After YARN-271, fair scheduler can infinite loop and not schedule any application. Contributed by Sandy Ryza.

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1428387 13f79535-47bb-0310-9956-ffa450edef68
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Thomas White 2013-01-03 15:07:22 +00:00
parent 19a291a0d6
commit 0768f96a83
2 changed files with 4 additions and 1 deletions
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3
hadoop-yarn-project/CHANGES.txt
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@ -161,6 +161,9 @@ Release 2.0.3-alpha - Unreleased
YARN-288. Fair scheduler queue doesn't accept any jobs when ACLs are YARN-288. Fair scheduler queue doesn't accept any jobs when ACLs are
configured. (Sandy Ryza via tomwhite) 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 Release 2.0.2-alpha - 2012-09-07
INCOMPATIBLE CHANGES INCOMPATIBLE CHANGES

2
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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@ -760,7 +760,7 @@ private synchronized void nodeUpdate(RMNode nm,
// Otherwise, schedule at queue which is furthest below fair share // Otherwise, schedule at queue which is furthest below fair share
else { else {
int assignedContainers = 0; int assignedContainers = 0;
while (true) { while (node.getReservedContainer() == null) {
// At most one task is scheduled each iteration of this loop // At most one task is scheduled each iteration of this loop
List<FSLeafQueue> scheds = new ArrayList<FSLeafQueue>( List<FSLeafQueue> scheds = new ArrayList<FSLeafQueue>(
queueMgr.getLeafQueues()); queueMgr.getLeafQueues());