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YARN-9833. Race condition when DirectoryCollection.checkDirs() runs during container launch. Contributed by Peter Bacsko. 

(cherry picked from commit c474e24c0b)
This commit is contained in:
Sunil G 2019-09-17 19:41:38 +05:30
parent 7ec229244a
commit 3e0025d877
1 changed files with 4 additions and 3 deletions
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7
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/DirectoryCollection.java
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@ -48,6 +48,7 @@ import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableList;
/**
* Manages a list of local storage directories.
@ -227,7 +228,7 @@ public class DirectoryCollection {
List<String> getGoodDirs() {
this.readLock.lock();
try {
return Collections.unmodifiableList(localDirs);
return ImmutableList.copyOf(localDirs);
} finally {
this.readLock.unlock();
}
@ -239,7 +240,7 @@ public class DirectoryCollection {
List<String> getFailedDirs() {
this.readLock.lock();
try {
return Collections.unmodifiableList(
return ImmutableList.copyOf(
DirectoryCollection.concat(errorDirs, fullDirs));
} finally {
this.readLock.unlock();
@ -252,7 +253,7 @@ public class DirectoryCollection {
List<String> getFullDirs() {
this.readLock.lock();
try {
return Collections.unmodifiableList(fullDirs);
return ImmutableList.copyOf(fullDirs);
} finally {
this.readLock.unlock();
}