| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.hadoop.hdfs.server.namenode; |
| |
| import java.io.IOException; |
| import java.util.EnumSet; |
| import java.util.Map; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.XAttrSetFlag; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| import org.apache.hadoop.hdfs.DistributedFileSystem; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.protocol.HdfsConstants.SafeModeAction; |
| import org.junit.AfterClass; |
| import org.junit.Assert; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| /** |
| * 1) save xattrs, restart NN, assert xattrs reloaded from edit log, |
| * 2) save xattrs, create new checkpoint, restart NN, assert xattrs |
| * reloaded from fsimage |
| */ |
| public class TestFSImageWithXAttr { |
| private static Configuration conf; |
| private static MiniDFSCluster cluster; |
| |
| //xattrs |
| private static final String name1 = "user.a1"; |
| private static final byte[] value1 = {0x31, 0x32, 0x33}; |
| private static final byte[] newValue1 = {0x31, 0x31, 0x31}; |
| private static final String name2 = "user.a2"; |
| private static final byte[] value2 = {0x37, 0x38, 0x39}; |
| private static final String name3 = "user.a3"; |
| private static final byte[] value3 = {}; |
| |
| @BeforeClass |
| public static void setUp() throws IOException { |
| conf = new Configuration(); |
| conf.setBoolean(DFSConfigKeys.DFS_NAMENODE_XATTRS_ENABLED_KEY, true); |
| cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build(); |
| cluster.waitActive(); |
| } |
| |
| @AfterClass |
| public static void tearDown() { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| |
| private void testXAttr(boolean persistNamespace) throws IOException { |
| Path path = new Path("/p"); |
| DistributedFileSystem fs = cluster.getFileSystem(); |
| fs.create(path).close(); |
| |
| fs.setXAttr(path, name1, value1, EnumSet.of(XAttrSetFlag.CREATE)); |
| fs.setXAttr(path, name2, value2, EnumSet.of(XAttrSetFlag.CREATE)); |
| fs.setXAttr(path, name3, null, EnumSet.of(XAttrSetFlag.CREATE)); |
| |
| restart(fs, persistNamespace); |
| |
| Map<String, byte[]> xattrs = fs.getXAttrs(path); |
| Assert.assertEquals(xattrs.size(), 3); |
| Assert.assertArrayEquals(value1, xattrs.get(name1)); |
| Assert.assertArrayEquals(value2, xattrs.get(name2)); |
| Assert.assertArrayEquals(value3, xattrs.get(name3)); |
| |
| fs.setXAttr(path, name1, newValue1, EnumSet.of(XAttrSetFlag.REPLACE)); |
| |
| restart(fs, persistNamespace); |
| |
| xattrs = fs.getXAttrs(path); |
| Assert.assertEquals(xattrs.size(), 3); |
| Assert.assertArrayEquals(newValue1, xattrs.get(name1)); |
| Assert.assertArrayEquals(value2, xattrs.get(name2)); |
| Assert.assertArrayEquals(value3, xattrs.get(name3)); |
| |
| fs.removeXAttr(path, name1); |
| fs.removeXAttr(path, name2); |
| fs.removeXAttr(path, name3); |
| |
| restart(fs, persistNamespace); |
| xattrs = fs.getXAttrs(path); |
| Assert.assertEquals(xattrs.size(), 0); |
| } |
| |
| @Test |
| public void testPersistXAttr() throws IOException { |
| testXAttr(true); |
| } |
| |
| @Test |
| public void testXAttrEditLog() throws IOException { |
| testXAttr(false); |
| } |
| |
| /** |
| * Restart the NameNode, optionally saving a new checkpoint. |
| * |
| * @param fs DistributedFileSystem used for saving namespace |
| * @param persistNamespace boolean true to save a new checkpoint |
| * @throws IOException if restart fails |
| */ |
| private void restart(DistributedFileSystem fs, boolean persistNamespace) |
| throws IOException { |
| if (persistNamespace) { |
| fs.setSafeMode(SafeModeAction.SAFEMODE_ENTER); |
| fs.saveNamespace(); |
| fs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE); |
| } |
| |
| cluster.restartNameNode(); |
| cluster.waitActive(); |
| } |
| |
| } |