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YARN-5921. Incorrect synchronization in RMContextImpl#setHAServiceState/getHAServiceState. Contributed by Varun Saxena 

(cherry picked from commit f3b8ff54ab)
This commit is contained in:
Naganarasimha 2016-12-06 06:53:38 +05:30
parent 7dc22dbe0c
commit 5b44b0c9ed
1 changed files with 6 additions and 4 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/RMContextImpl.java
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@ -73,6 +73,8 @@ public class RMContextImpl implements RMContext {
private RMApplicationHistoryWriter rmApplicationHistoryWriter; private RMApplicationHistoryWriter rmApplicationHistoryWriter;
private SystemMetricsPublisher systemMetricsPublisher; private SystemMetricsPublisher systemMetricsPublisher;
private final Object haServiceStateLock = new Object();
/** /**
* Default constructor. To be used in conjunction with setter methods for * Default constructor. To be used in conjunction with setter methods for
* individual fields. * individual fields.
@ -237,9 +239,9 @@ public class RMContextImpl implements RMContext {
this.isHAEnabled = isHAEnabled; this.isHAEnabled = isHAEnabled;
} }
void setHAServiceState(HAServiceState haServiceState) { void setHAServiceState(HAServiceState serviceState) {
synchronized (haServiceState) { synchronized (haServiceStateLock) {
this.haServiceState = haServiceState; this.haServiceState = serviceState;
} }
} }
@ -335,7 +337,7 @@ public class RMContextImpl implements RMContext {
@Override @Override
public HAServiceState getHAServiceState() { public HAServiceState getHAServiceState() {
synchronized (haServiceState) { synchronized (haServiceStateLock) {
return haServiceState; return haServiceState;
} }
} }