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YARN-10976. Fix resource leak due to Files.walk (#3552) 

Signed-off-by: Akira Ajisaka <aajisaka@apache.org>
(cherry picked from commit ae95caa60e)
This commit is contained in:
lujiefsi 2021-10-18 14:24:15 +08:00 committed by Akira Ajisaka
parent 5b1cf17f88
commit 4024afec28
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1 changed files with 7 additions and 6 deletions
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/com/nec/VEDeviceDiscoverer.java
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@ -27,6 +27,7 @@ import java.nio.file.Paths;
import java.util.Set;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.apache.commons.lang3.mutable.MutableInt;
import org.apache.hadoop.util.Shell;
@ -58,12 +59,12 @@ class VEDeviceDiscoverer {
public Set<Device> getDevicesFromPath(String path) throws IOException {
MutableInt counter = new MutableInt(0);
return Files.walk(Paths.get(path), 1)
.filter(p -> p.toFile().getName().startsWith("veslot"))
try (Stream<Path> stream = Files.walk(Paths.get(path), 1)) {
return stream.filter(p -> p.toFile().getName().startsWith("veslot"))
.map(p -> toDevice(p, counter))
.collect(Collectors.toSet());
}
}
private Device toDevice(Path p, MutableInt counter) {
CommandExecutor executor =