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HDFS-15515: mkdirs on fallback should throw IOE out instead of suppressing and returning false (#2205) 

* HDFS-15515: mkdirs on fallback should throw IOE out instead of suppressing and returning false

* Used LambdaTestUtils#intercept in test

(cherry picked from commit 99b120a06e)
This commit is contained in:
Uma Maheswara Rao G 2020-08-11 00:01:58 -07:00
parent 0f234667dd
commit 0808cb6355
2 changed files with 7 additions and 5 deletions
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7
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/ViewFileSystem.java
View File

@ -1382,7 +1382,7 @@ public class ViewFileSystem extends FileSystem {
@Override
public boolean mkdirs(Path dir, FsPermission permission)
throws AccessControlException, FileAlreadyExistsException {
throws IOException {
if (theInternalDir.isRoot() && dir == null) {
throw new FileAlreadyExistsException("/ already exits");
}
@ -1412,7 +1412,7 @@ public class ViewFileSystem extends FileSystem {
.append(linkedFallbackFs.getUri());
LOG.debug(msg.toString(), e);
}
return false;
throw e;
}
}
@ -1420,8 +1420,7 @@ public class ViewFileSystem extends FileSystem {
}
@Override
public boolean mkdirs(Path dir)
throws AccessControlException, FileAlreadyExistsException {
public boolean mkdirs(Path dir) throws IOException {
return mkdirs(dir, null);
}

5
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/fs/viewfs/TestViewFileSystemLinkFallback.java
View File

@ -17,6 +17,7 @@
*/
package org.apache.hadoop.fs.viewfs;
import static org.apache.hadoop.test.LambdaTestUtils.intercept;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
@ -759,7 +760,9 @@ public class TestViewFileSystemLinkFallback extends ViewFileSystemBaseTest {
cluster.shutdownNameNodes(); // Stopping fallback server
// /user1/test1 does not exist in mount internal dir tree, it would
// attempt to create in fallback.
assertFalse(vfs.mkdirs(nextLevelToInternalDir));
intercept(IOException.class, () -> {
vfs.mkdirs(nextLevelToInternalDir);
});
cluster.restartNameNodes();
// should return true succeed when fallback fs is back to normal.
assertTrue(vfs.mkdirs(nextLevelToInternalDir));