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HDFS-7347. Configurable erasure coding policy for individual files and directories ( Contributed by Zhe Zhang )

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Vinayakumar B 2014-11-06 10:03:26 +05:30 committed by Zhe Zhang
parent 022f49d59e
commit f166e67a23
3 changed files with 82 additions and 0 deletions
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4
hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-EC-7285.txt Normal file
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@ -0,0 +1,4 @@
BREAKDOWN OF HDFS-7285 SUBTASKS AND RELATED JIRAS
HDFS-7347. Configurable erasure coding policy for individual files and
directories ( Zhe Zhang via vinayakumarb )

3
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestBlockStoragePolicy.java
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@ -119,6 +119,9 @@ public void testDefaultPolicies() {
expectedPolicyStrings.put(COLD,
"BlockStoragePolicy{COLD:" + COLD + ", storageTypes=[ARCHIVE], " +
"creationFallbacks=[], replicationFallbacks=[]}");
expectedPolicyStrings.put(EC,
"BlockStoragePolicy{EC:" + EC + ", storageTypes=[DISK], " +
"creationFallbacks=[], replicationFallbacks=[ARCHIVE]}");
expectedPolicyStrings.put(WARM,
"BlockStoragePolicy{WARM:" + WARM + ", storageTypes=[DISK, ARCHIVE], " +
"creationFallbacks=[DISK, ARCHIVE], " +

75
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestBlockInitialEncoding.java Normal file
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@ -0,0 +1,75 @@
/**
* 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.blockmanagement;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.*;
import org.apache.hadoop.hdfs.client.HdfsAdmin;
import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
import org.apache.hadoop.hdfs.server.namenode.INode;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.io.IOException;
import static org.apache.hadoop.hdfs.protocol.HdfsConstants.EC_STORAGE_POLICY_NAME;
import static org.apache.hadoop.hdfs.protocol.HdfsConstants.EC_STORAGE_POLICY_ID;
import static org.junit.Assert.assertEquals;
public class TestBlockInitialEncoding {
private final int NUM_OF_DATANODES = 3;
private Configuration conf;
private MiniDFSCluster cluster;
private DistributedFileSystem fs;
private static final int BLOCK_SIZE = 1024;
private HdfsAdmin dfsAdmin;
private FSNamesystem namesystem;
@Before
public void setupCluster() throws IOException {
conf = new HdfsConfiguration();
conf.setInt(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, BLOCK_SIZE);
cluster = new MiniDFSCluster.Builder(conf).
numDataNodes(NUM_OF_DATANODES).build();
cluster.waitActive();
fs = cluster.getFileSystem();
dfsAdmin = new HdfsAdmin(cluster.getURI(), conf);
namesystem = cluster.getNamesystem();
}
@After
public void shutdownCluster() throws IOException {
cluster.shutdown();
}
@Test
public void testBlockInitialEncoding()
throws IOException, InterruptedException {
final Path testDir = new Path("/test");
fs.mkdir(testDir, FsPermission.getDirDefault());
dfsAdmin.setStoragePolicy(testDir, EC_STORAGE_POLICY_NAME);
final Path ECFilePath = new Path("/test/foo.ec");
DFSTestUtil.createFile(fs, ECFilePath, 4 * BLOCK_SIZE, (short) 3, 0);
INode inode = namesystem.getFSDirectory().getINode(ECFilePath.toString());
assertEquals(EC_STORAGE_POLICY_ID, inode.getStoragePolicyID());
}
}