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HDFS-10850. getEZForPath should NOT throw FNF. Contributed by Andrew Wang. 

(cherry picked from commit 0670149c88)
This commit is contained in:
Kihwal Lee 2016-09-30 08:58:38 -05:00
parent 25df276c6b
commit 10222cd54e
4 changed files with 24 additions and 50 deletions
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4
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
View File

@ -2807,8 +2807,8 @@ public class DFSClient implements java.io.Closeable, RemotePeerFactory,
try (TraceScope ignored = newPathTraceScope("getEZForPath", src)) {
return namenode.getEZForPath(src);
} catch (RemoteException re) {
throw re.unwrapRemoteException(FileNotFoundException.class,
AccessControlException.class, UnresolvedPathException.class);
throw re.unwrapRemoteException(AccessControlException.class,
UnresolvedPathException.class);
}
}

7
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/HdfsAdmin.java
View File

@ -327,14 +327,13 @@ public class HdfsAdmin {
* Get the path of the encryption zone for a given file or directory.
*
* @param path The path to get the ez for.
*
* @return The EncryptionZone of the ez, or null if path is not in an ez.
* @return An EncryptionZone, or null if path does not exist or is not in an
* ez.
* @throws IOException if there was a general IO exception
* @throws AccessControlException if the caller does not have access to path
* @throws FileNotFoundException if the path does not exist
*/
public EncryptionZone getEncryptionZoneForPath(Path path)
throws IOException, AccessControlException, FileNotFoundException {
throws IOException, AccessControlException {
return dfs.getEZForPath(path);
}

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirEncryptionZoneOp.java
View File

@ -19,7 +19,6 @@ package org.apache.hadoop.hdfs.server.namenode;
import static org.apache.hadoop.hdfs.server.common.HdfsServerConstants.CRYPTO_XATTR_FILE_ENCRYPTION_INFO;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.security.PrivilegedExceptionAction;
@ -184,9 +183,6 @@ final class FSDirEncryptionZoneOp {
fsd.readLock();
try {
iip = fsd.resolvePath(pc, srcArg);
if (iip.getLastINode() == null) {
throw new FileNotFoundException("Path not found: " + iip.getPath());
}
if (fsd.isPermissionEnabled()) {
fsd.checkPathAccess(pc, iip, FsAction.READ);
}

59
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestEncryptionZones.java
View File

@ -97,6 +97,7 @@ import org.junit.Before;
import org.junit.Test;
import org.mockito.Mockito;
import static org.junit.Assert.assertNotNull;
import static org.mockito.Matchers.anyBoolean;
import static org.mockito.Matchers.anyLong;
import static org.mockito.Matchers.anyObject;
@ -604,13 +605,8 @@ public class TestEncryptionZones {
assertExceptionContains("Permission denied:", e);
}
try {
userAdmin.getEncryptionZoneForPath(nonexistent);
fail("FileNotFoundException should be thrown for a non-existent"
+ " file path");
} catch (FileNotFoundException e) {
assertExceptionContains("Path not found: " + nonexistent, e);
}
assertNull("expected null for nonexistent path",
userAdmin.getEncryptionZoneForPath(nonexistent));
// Check operation with non-ez paths
assertNull("expected null for non-ez path",
@ -638,20 +634,10 @@ public class TestEncryptionZones {
assertEquals("expected ez path", allPath.toString(),
userAdmin.getEncryptionZoneForPath(
new Path(snapshottedAllPath)).getPath().toString());
try {
userAdmin.getEncryptionZoneForPath(allPathFile);
fail("FileNotFoundException should be thrown for a non-existent"
+ " file path");
} catch (FileNotFoundException e) {
assertExceptionContains("Path not found: " + allPathFile, e);
}
try {
userAdmin.getEncryptionZoneForPath(allPath);
fail("FileNotFoundException should be thrown for a non-existent"
+ " file path");
} catch (FileNotFoundException e) {
assertExceptionContains("Path not found: " + allPath, e);
}
assertNull("expected null for deleted file path",
userAdmin.getEncryptionZoneForPath(allPathFile));
assertNull("expected null for deleted directory path",
userAdmin.getEncryptionZoneForPath(allPath));
return null;
}
});
@ -1498,25 +1484,18 @@ public class TestEncryptionZones {
}
@Test(timeout = 60000)
public void testGetEncryptionZoneOnANonExistentZoneFile() throws Exception {
final Path ez = new Path("/ez");
fs.mkdirs(ez);
dfsAdmin.createEncryptionZone(ez, TEST_KEY, NO_TRASH);
Path zoneFile = new Path(ez, "file");
try {
fs.getEZForPath(zoneFile);
fail("FileNotFoundException should be thrown for a non-existent"
+ " file path");
} catch (FileNotFoundException e) {
assertExceptionContains("Path not found: " + zoneFile, e);
}
try {
dfsAdmin.getEncryptionZoneForPath(zoneFile);
fail("FileNotFoundException should be thrown for a non-existent"
+ " file path");
} catch (FileNotFoundException e) {
assertExceptionContains("Path not found: " + zoneFile, e);
}
public void testGetEncryptionZoneOnANonExistentPaths() throws Exception {
final Path ezPath = new Path("/ez");
fs.mkdirs(ezPath);
dfsAdmin.createEncryptionZone(ezPath, TEST_KEY, NO_TRASH);
Path zoneFile = new Path(ezPath, "file");
EncryptionZone ez = fs.getEZForPath(zoneFile);
assertNotNull("Expected EZ for non-existent path in EZ", ez);
ez = dfsAdmin.getEncryptionZoneForPath(zoneFile);
assertNotNull("Expected EZ for non-existent path in EZ", ez);
ez = dfsAdmin.getEncryptionZoneForPath(
new Path("/does/not/exist"));
assertNull("Expected null for non-existent path not in EZ", ez);
}
@Test(timeout = 120000)