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HDFS-9922. Upgrade Domain placement policy status marks a good block in violation when there are decommissioned nodes. (Chris Trezzo via mingma) 

(cherry picked from commit b48f27e794)
(cherry picked from commit 32b115da1d)
This commit is contained in:
Ming Ma 2016-06-15 22:00:52 -07:00 committed by Ming Ma
parent ab511286fd
commit d1ae1fb449
3 changed files with 210 additions and 38 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockPlacementStatusWithUpgradeDomain.java
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@ -60,7 +60,7 @@ public class BlockPlacementStatusWithUpgradeDomain implements
private boolean isUpgradeDomainPolicySatisfied() {
if (numberOfReplicas <= upgradeDomainFactor) {
return (numberOfReplicas == upgradeDomains.size());
return (numberOfReplicas <= upgradeDomains.size());
} else {
return upgradeDomains.size() >= upgradeDomainFactor;
}

83
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestBlockPlacementStatusWithUpgradeDomain.java Normal file
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@ -0,0 +1,83 @@
/**
* 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 static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import java.util.HashSet;
import java.util.Set;
import org.junit.Before;
import org.junit.Test;
/**
* Unit tests for BlockPlacementStatusWithUpgradeDomain class.
*/
public class TestBlockPlacementStatusWithUpgradeDomain {
private Set<String> upgradeDomains;
private BlockPlacementStatusDefault bpsd =
mock(BlockPlacementStatusDefault.class);
@Before
public void setup() {
upgradeDomains = new HashSet<String>();
upgradeDomains.add("1");
upgradeDomains.add("2");
upgradeDomains.add("3");
when(bpsd.isPlacementPolicySatisfied()).thenReturn(true);
}
@Test
public void testIsPolicySatisfiedParentFalse() {
when(bpsd.isPlacementPolicySatisfied()).thenReturn(false);
BlockPlacementStatusWithUpgradeDomain bps =
new BlockPlacementStatusWithUpgradeDomain(bpsd, upgradeDomains, 3, 3);
// Parent policy is not satisfied but upgrade domain policy is
assertFalse(bps.isPlacementPolicySatisfied());
}
@Test
public void testIsPolicySatisfiedAllEqual() {
BlockPlacementStatusWithUpgradeDomain bps =
new BlockPlacementStatusWithUpgradeDomain(bpsd, upgradeDomains, 3, 3);
// Number of domains, replicas and upgradeDomainFactor is equal and parent
// policy is satisfied
assertTrue(bps.isPlacementPolicySatisfied());
}
@Test
public void testIsPolicySatisifedSmallDomains() {
// Number of domains is less than replicas but equal to factor
BlockPlacementStatusWithUpgradeDomain bps =
new BlockPlacementStatusWithUpgradeDomain(bpsd, upgradeDomains, 4, 3);
assertTrue(bps.isPlacementPolicySatisfied());
// Same as above but replicas is greater than factor
bps = new BlockPlacementStatusWithUpgradeDomain(bpsd, upgradeDomains, 4, 2);
assertTrue(bps.isPlacementPolicySatisfied());
// Number of domains is less than replicas and factor
bps = new BlockPlacementStatusWithUpgradeDomain(bpsd, upgradeDomains, 4, 4);
assertFalse(bps.isPlacementPolicySatisfied());
}
}

151
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestUpgradeDomainBlockPlacementPolicy.java
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@ -17,38 +17,40 @@
*/
package org.apache.hadoop.hdfs.server.namenode;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.util.Arrays;
import java.util.EnumSet;
import java.util.HashSet;
import java.util.Set;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.CreateFlag;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.permission.PermissionStatus;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.protocol.DatanodeAdminProperties;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
import org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy;
import org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyWithUpgradeDomain;
import org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementStatus;
import org.apache.hadoop.hdfs.server.blockmanagement.CombinedHostFileManager;
import org.apache.hadoop.hdfs.server.blockmanagement.HostConfigManager;
import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocols;
import org.apache.hadoop.hdfs.util.HostsFileWriter;
import org.apache.hadoop.net.StaticMapping;
import org.apache.hadoop.test.GenericTestUtils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.google.common.base.Supplier;
/**
* End-to-end test case for upgrade domain
* The test configs upgrade domain for nodes via admin json
@ -72,12 +74,13 @@ public class TestUpgradeDomainBlockPlacementPolicy {
{"127.0.0.1", "127.0.0.1", "127.0.0.1", "127.0.0.1",
"127.0.0.1", "127.0.0.1"};
static final String[] upgradeDomains =
{ "ud1", "ud2", "ud3", "ud1", "ud2", "ud3" };
{"ud5", "ud2", "ud3", "ud1", "ud2", "ud4"};
static final Set<DatanodeID> expectedDatanodeIDs = new HashSet<>();
private MiniDFSCluster cluster = null;
private NamenodeProtocols nameNodeRpc = null;
private FSNamesystem namesystem = null;
private PermissionStatus perm = null;
private HostsFileWriter hostsFileWriter = new HostsFileWriter();
@Before
public void setup() throws IOException {
@ -90,7 +93,6 @@ public class TestUpgradeDomainBlockPlacementPolicy {
BlockPlacementPolicy.class);
conf.setClass(DFSConfigKeys.DFS_NAMENODE_HOSTS_PROVIDER_CLASSNAME_KEY,
CombinedHostFileManager.class, HostConfigManager.class);
HostsFileWriter hostsFileWriter = new HostsFileWriter();
hostsFileWriter.initialize(conf, "temp/upgradedomainpolicy");
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(6).racks(racks)
@ -100,12 +102,12 @@ public class TestUpgradeDomainBlockPlacementPolicy {
namesystem = cluster.getNamesystem();
perm = new PermissionStatus("TestDefaultBlockPlacementPolicy", null,
FsPermission.getDefault());
refreshDatanodeAdminProperties(hostsFileWriter);
hostsFileWriter.cleanup();
refreshDatanodeAdminProperties();
}
@After
public void teardown() {
public void teardown() throws IOException {
hostsFileWriter.cleanup();
if (cluster != null) {
cluster.shutdown();
cluster = null;
@ -114,15 +116,18 @@ public class TestUpgradeDomainBlockPlacementPolicy {
/**
* Define admin properties for these datanodes as follows.
* dn0 and dn3 have upgrade domain ud1.
* dn1 and dn4 have upgrade domain ud2.
* dn2 and dn5 have upgrade domain ud3.
* dn0's upgrade domain is ud5.
* dn1's upgrade domain is ud2.
* dn2's upgrade domain is ud3.
* dn3's upgrade domain is ud1.
* dn4's upgrade domain is ud2.
* dn5's upgrade domain is ud4.
* dn0 and dn5 are decommissioned.
* Given dn0, dn1 and dn2 are on rack1 and dn3, dn4 and dn5 are on
* rack2. Then any block's replicas should be on either
* {dn1, dn2, d3} or {dn2, dn3, dn4}.
*/
private void refreshDatanodeAdminProperties(HostsFileWriter hostsFileWriter)
private void refreshDatanodeAdminProperties()
throws IOException {
DatanodeAdminProperties[] datanodes = new DatanodeAdminProperties[
hosts.length];
@ -138,32 +143,116 @@ public class TestUpgradeDomainBlockPlacementPolicy {
hostsFileWriter.initIncludeHosts(datanodes);
cluster.getFileSystem().refreshNodes();
expectedDatanodeIDs.clear();
expectedDatanodeIDs.add(cluster.getDataNodes().get(2).getDatanodeId());
expectedDatanodeIDs.add(cluster.getDataNodes().get(3).getDatanodeId());
}
/**
* Define admin properties for these datanodes as follows.
* dn0's upgrade domain is ud5.
* dn1's upgrade domain is ud2.
* dn2's upgrade domain is ud3.
* dn3's upgrade domain is ud1.
* dn4's upgrade domain is ud2.
* dn5's upgrade domain is ud4.
* dn2 and dn3 are decommissioned.
* Given dn0, dn1 and dn2 are on rack1 and dn3, dn4 and dn5 are on
* rack2. Then any block's replicas should be on either
* {dn0, dn1, d5} or {dn0, dn4, dn5}.
*/
private void refreshDatanodeAdminProperties2()
throws IOException {
DatanodeAdminProperties[] datanodes = new DatanodeAdminProperties[
hosts.length];
for (int i = 0; i < hosts.length; i++) {
datanodes[i] = new DatanodeAdminProperties();
DatanodeID datanodeID = cluster.getDataNodes().get(i).getDatanodeId();
datanodes[i].setHostName(datanodeID.getHostName());
datanodes[i].setPort(datanodeID.getXferPort());
datanodes[i].setUpgradeDomain(upgradeDomains[i]);
}
datanodes[2].setAdminState(DatanodeInfo.AdminStates.DECOMMISSIONED);
datanodes[3].setAdminState(DatanodeInfo.AdminStates.DECOMMISSIONED);
hostsFileWriter.initIncludeHosts(datanodes);
cluster.getFileSystem().refreshNodes();
expectedDatanodeIDs.clear();
expectedDatanodeIDs.add(cluster.getDataNodes().get(0).getDatanodeId());
expectedDatanodeIDs.add(cluster.getDataNodes().get(5).getDatanodeId());
}
@Test
public void testPlacement() throws Exception {
String clientMachine = "127.0.0.1";
for (int i = 0; i < 5; i++) {
String src = "/test-" + i;
// Create the file with client machine
HdfsFileStatus fileStatus = namesystem.startFile(src, perm,
clientMachine, clientMachine, EnumSet.of(CreateFlag.CREATE), true,
REPLICATION_FACTOR, DEFAULT_BLOCK_SIZE, null, false);
LocatedBlock locatedBlock = nameNodeRpc.addBlock(src, clientMachine,
null, null, fileStatus.getFileId(), null, null);
assertEquals("Block should be allocated sufficient locations",
REPLICATION_FACTOR, locatedBlock.getLocations().length);
Set<DatanodeInfo> locs = new HashSet<>(Arrays.asList(
locatedBlock.getLocations()));
final long fileSize = DEFAULT_BLOCK_SIZE * 5;
final String testFile = new String("/testfile");
final Path path = new Path(testFile);
DFSTestUtil.createFile(cluster.getFileSystem(), path, fileSize,
REPLICATION_FACTOR, 1000L);
LocatedBlocks locatedBlocks =
cluster.getFileSystem().getClient().getLocatedBlocks(
path.toString(), 0, fileSize);
for (LocatedBlock block : locatedBlocks.getLocatedBlocks()) {
Set<DatanodeInfo> locs = new HashSet<>();
for(DatanodeInfo datanodeInfo : block.getLocations()) {
if (datanodeInfo.getAdminState() == DatanodeInfo.AdminStates.NORMAL) {
locs.add(datanodeInfo);
}
}
for (DatanodeID datanodeID : expectedDatanodeIDs) {
locs.contains(datanodeID);
assertTrue(locs.contains(datanodeID));
}
}
}
nameNodeRpc.abandonBlock(locatedBlock.getBlock(), fileStatus.getFileId(),
src, clientMachine);
@Test(timeout = 300000)
public void testPlacementAfterDecommission() throws Exception {
final long fileSize = DEFAULT_BLOCK_SIZE * 5;
final String testFile = new String("/testfile");
final Path path = new Path(testFile);
DFSTestUtil.createFile(cluster.getFileSystem(), path, fileSize,
REPLICATION_FACTOR, 1000L);
// Decommission some nodes and wait until decommissions have finished.
refreshDatanodeAdminProperties2();
GenericTestUtils.waitFor(new Supplier<Boolean>() {
@Override
public Boolean get() {
boolean successful = true;
LocatedBlocks locatedBlocks;
try {
locatedBlocks =
cluster.getFileSystem().getClient().getLocatedBlocks(
path.toString(), 0, fileSize);
} catch (IOException ioe) {
return false;
}
for(LocatedBlock block : locatedBlocks.getLocatedBlocks()) {
Set<DatanodeInfo> locs = new HashSet<>();
for (DatanodeInfo datanodeInfo : block.getLocations()) {
if (datanodeInfo.getAdminState() ==
DatanodeInfo.AdminStates.NORMAL) {
locs.add(datanodeInfo);
}
}
for (DatanodeID datanodeID : expectedDatanodeIDs) {
successful = successful && locs.contains(datanodeID);
}
}
return successful;
}
}, 1000, 60000);
// Verify block placement policy of each block.
LocatedBlocks locatedBlocks;
locatedBlocks =
cluster.getFileSystem().getClient().getLocatedBlocks(
path.toString(), 0, fileSize);
for(LocatedBlock block : locatedBlocks.getLocatedBlocks()) {
BlockPlacementStatus status = cluster.getNamesystem().getBlockManager().
getBlockPlacementPolicy().verifyBlockPlacement(
block.getLocations(), REPLICATION_FACTOR);
assertTrue(status.isPlacementPolicySatisfied());
}
}
}