HADOOP-17689. Avoid Potential NPE in org.apache.hadoop.fs (#3008)
Signed-off-by: Takanobu Asanuma <tasanuma@apache.org>
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@ -24,6 +24,7 @@ import java.net.URISyntaxException;
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import java.util.Arrays;
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import java.util.EnumSet;
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import java.util.List;
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import java.util.Optional;
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import java.util.concurrent.CompletableFuture;
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import org.apache.hadoop.classification.InterfaceAudience;
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@ -90,7 +91,11 @@ public abstract class DelegateToFileSystem extends AbstractFileSystem {
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if (!createParent) { // parent must exist.
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// since this.create makes parent dirs automatically
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// we must throw exception if parent does not exist.
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final FileStatus stat = getFileStatus(f.getParent());
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Optional<Path> parentPath = f.getOptionalParentPath();
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if (!parentPath.isPresent()) {
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throw new FileNotFoundException("Missing parent:" + f);
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}
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final FileStatus stat = getFileStatus(parentPath.get());
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if (stat == null) {
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throw new FileNotFoundException("Missing parent:" + f);
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}
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