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YARN-3487. CapacityScheduler scheduler lock obtained unnecessarily when calling getQueue (Jason Lowe via wangda) 

(cherry picked from commit f47a5763ac)
This commit is contained in:
Wangda Tan 2015-04-17 17:22:27 -07:00
parent e7cbecddc3
commit 3316cd4357
2 changed files with 4 additions and 6 deletions
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2
hadoop-yarn-project/CHANGES.txt
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@ -190,6 +190,8 @@ Release 2.7.1 - UNRELEASED
OPTIMIZATIONS
BUG FIXES
YARN-3487. CapacityScheduler scheduler lock obtained unnecessarily when
calling getQueue (Jason Lowe via wangda)
YARN-3462. Patches applied for YARN-2424 are inconsistent between
trunk and branch-2. (Naganarasimha G R via harsh)

8
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
View File

@ -642,7 +642,7 @@ public class CapacityScheduler extends
return queue;
}
public synchronized CSQueue getQueue(String queueName) {
public CSQueue getQueue(String queueName) {
if (queueName == null) {
return null;
}
@ -940,11 +940,7 @@ public class CapacityScheduler extends
boolean includeChildQueues, boolean recursive)
throws IOException {
CSQueue queue = null;
synchronized (this) {
queue = this.queues.get(queueName);
}
queue = this.queues.get(queueName);
if (queue == null) {
throw new IOException("Unknown queue: " + queueName);
}