HDFS-15989. Split TestBalancer and De-flake testMaxIterationTime() (#2923)
Signed-off-by: Akira Ajisaka <aajisaka@apache.org> Signed-off-by: Takanobu Asanuma <tasanuma@apache.org>
This commit is contained in:
Viraj Jasani
GitHub
parent
6cb90005a7
commit
acb49f2fc3
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@ -19,8 +19,6 @@ package org.apache.hadoop.hdfs.server.balancer;
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import static org.apache.hadoop.fs.CommonConfigurationKeys.IPC_CLIENT_CONNECT_MAX_RETRIES_ON_SASL_KEY;
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import static org.apache.hadoop.fs.StorageType.DEFAULT;
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import static org.apache.hadoop.fs.StorageType.RAM_DISK;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BALANCER_MAX_SIZE_TO_MOVE_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY;
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import static org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.DFS_DATA_TRANSFER_PROTECTION_KEY;
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@ -29,25 +27,18 @@ import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BALANCER_KERBEROS_PRINCIP
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BALANCER_KEYTAB_ENABLED_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BALANCER_KEYTAB_FILE_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BLOCK_ACCESS_TOKEN_ENABLE_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BLOCK_SIZE_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_BLOCK_PINNING_ENABLED;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_HTTPS_ADDRESS_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_KERBEROS_PRINCIPAL_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_KEYTAB_FILE_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_LAZY_WRITER_INTERVAL_SEC;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_MAX_LOCKED_MEMORY_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_HTTP_POLICY_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_HTTPS_ADDRESS_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_KERBEROS_PRINCIPAL_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_KEYTAB_FILE_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_LAZY_PERSIST_FILE_SCRUB_INTERVAL_SEC;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_WEB_AUTHENTICATION_KERBEROS_PRINCIPAL_KEY;
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import static org.apache.hadoop.test.PlatformAssumptions.assumeNotWindows;
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import org.apache.hadoop.hdfs.protocol.ErasureCodingPolicy;
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import org.apache.hadoop.hdfs.server.datanode.DataNodeTestUtils;
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import org.junit.AfterClass;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertTrue;
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@ -58,10 +49,8 @@ import static org.mockito.Mockito.doAnswer;
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import java.io.File;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.PrintWriter;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.URI;
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import java.security.PrivilegedExceptionAction;
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import java.util.ArrayList;
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@ -88,8 +77,6 @@ import org.apache.hadoop.fs.FileSystem;
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import org.apache.hadoop.fs.FileUtil;
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import org.apache.hadoop.fs.Path;
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import org.apache.hadoop.fs.StorageType;
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import org.apache.hadoop.fs.permission.FsPermission;
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import org.apache.hadoop.hdfs.DFSClient;
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import org.apache.hadoop.hdfs.DFSConfigKeys;
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import org.apache.hadoop.hdfs.DFSTestUtil;
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import org.apache.hadoop.hdfs.DFSUtil;
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@ -109,14 +96,9 @@ import org.apache.hadoop.hdfs.protocol.LocatedBlock;
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import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
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import org.apache.hadoop.hdfs.server.balancer.Balancer.Cli;
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import org.apache.hadoop.hdfs.server.balancer.Balancer.Result;
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy;
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyWithUpgradeDomain;
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementStatus;
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import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager;
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import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.StartupOption;
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import org.apache.hadoop.hdfs.server.datanode.DataNode;
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import org.apache.hadoop.hdfs.server.datanode.SimulatedFSDataset;
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import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.LazyPersistTestCase;
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import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
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import org.apache.hadoop.hdfs.server.namenode.NameNode;
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import org.apache.hadoop.hdfs.server.namenode.NameNodeAdapter;
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@ -187,7 +169,6 @@ public class TestBalancer {
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static final double CAPACITY_ALLOWED_VARIANCE = 0.005; // 0.5%
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static final double BALANCE_ALLOWED_VARIANCE = 0.11; // 10%+delta
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static final int DEFAULT_BLOCK_SIZE = 100;
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static final int DEFAULT_RAM_DISK_BLOCK_SIZE = 5 * 1024 * 1024;
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private static final Random r = new Random();
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static {
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@ -213,20 +194,6 @@ public class TestBalancer {
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conf.setInt(DFSConfigKeys.DFS_BALANCER_MAX_NO_MOVE_INTERVAL_KEY, 5*1000);
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}
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static void initConfWithRamDisk(Configuration conf,
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long ramDiskCapacity) {
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conf.setLong(DFS_BLOCK_SIZE_KEY, DEFAULT_RAM_DISK_BLOCK_SIZE);
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conf.setLong(DFS_DATANODE_MAX_LOCKED_MEMORY_KEY, ramDiskCapacity);
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conf.setInt(DFS_NAMENODE_LAZY_PERSIST_FILE_SCRUB_INTERVAL_SEC, 3);
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conf.setLong(DFS_HEARTBEAT_INTERVAL_KEY, 1);
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conf.setInt(DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_KEY, 500);
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conf.setInt(DFS_DATANODE_LAZY_WRITER_INTERVAL_SEC, 1);
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conf.setInt(DFSConfigKeys.DFS_BALANCER_MAX_NO_MOVE_INTERVAL_KEY, 5*1000);
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LazyPersistTestCase.initCacheManipulator();
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conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 1L);
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}
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private final ErasureCodingPolicy ecPolicy =
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StripedFileTestUtil.getDefaultECPolicy();
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private final int dataBlocks = ecPolicy.getNumDataUnits();
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@ -487,160 +454,6 @@ public class TestBalancer {
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waitForBalancer(totalUsedSpace, totalCapacity, client, cluster, p, 0);
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}
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/**
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* Make sure that balancer can't move pinned blocks.
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* If specified favoredNodes when create file, blocks will be pinned use
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* sticky bit.
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* @throws Exception
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*/
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@Test(timeout=100000)
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public void testBalancerWithPinnedBlocks() throws Exception {
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// This test assumes stick-bit based block pin mechanism available only
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// in Linux/Unix. It can be unblocked on Windows when HDFS-7759 is ready to
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// provide a different mechanism for Windows.
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assumeNotWindows();
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final Configuration conf = new HdfsConfiguration();
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initConf(conf);
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conf.setBoolean(DFS_DATANODE_BLOCK_PINNING_ENABLED, true);
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long[] capacities = new long[] { CAPACITY, CAPACITY };
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String[] hosts = {"host0", "host1"};
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String[] racks = { RACK0, RACK1 };
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int numOfDatanodes = capacities.length;
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cluster = new MiniDFSCluster.Builder(conf).numDataNodes(capacities.length)
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.hosts(hosts).racks(racks).simulatedCapacities(capacities).build();
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cluster.waitActive();
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client = NameNodeProxies.createProxy(conf,
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cluster.getFileSystem(0).getUri(), ClientProtocol.class).getProxy();
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// fill up the cluster to be 80% full
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long totalCapacity = sum(capacities);
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long totalUsedSpace = totalCapacity * 8 / 10;
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InetSocketAddress[] favoredNodes = new InetSocketAddress[numOfDatanodes];
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for (int i = 0; i < favoredNodes.length; i++) {
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// DFSClient will attempt reverse lookup. In case it resolves
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// "127.0.0.1" to "localhost", we manually specify the hostname.
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int port = cluster.getDataNodes().get(i).getXferAddress().getPort();
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favoredNodes[i] = new InetSocketAddress(hosts[i], port);
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}
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DFSTestUtil.createFile(cluster.getFileSystem(0), filePath, false, 1024,
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totalUsedSpace / numOfDatanodes, DEFAULT_BLOCK_SIZE,
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(short) numOfDatanodes, 0, false, favoredNodes);
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// start up an empty node with the same capacity
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cluster.startDataNodes(conf, 1, true, null, new String[] { RACK2 },
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new long[] { CAPACITY });
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totalCapacity += CAPACITY;
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// run balancer and validate results
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waitForHeartBeat(totalUsedSpace, totalCapacity, client, cluster);
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// start rebalancing
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Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
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int r = Balancer.run(namenodes, BalancerParameters.DEFAULT, conf);
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assertEquals(ExitStatus.NO_MOVE_PROGRESS.getExitCode(), r);
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}
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/**
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* Verify balancer won't violate the default block placement policy.
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* @throws Exception
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*/
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@Test(timeout=100000)
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public void testRackPolicyAfterBalance() throws Exception {
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final Configuration conf = new HdfsConfiguration();
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initConf(conf);
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long[] capacities = new long[] { CAPACITY, CAPACITY };
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String[] hosts = {"host0", "host1"};
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String[] racks = { RACK0, RACK1 };
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runBalancerAndVerifyBlockPlacmentPolicy(conf, capacities, hosts, racks,
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null, CAPACITY, "host2", RACK1, null);
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}
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/**
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* Verify balancer won't violate upgrade domain block placement policy.
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* @throws Exception
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*/
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@Test(timeout=100000)
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public void testUpgradeDomainPolicyAfterBalance() throws Exception {
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final Configuration conf = new HdfsConfiguration();
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initConf(conf);
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conf.setClass(DFSConfigKeys.DFS_BLOCK_REPLICATOR_CLASSNAME_KEY,
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BlockPlacementPolicyWithUpgradeDomain.class,
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BlockPlacementPolicy.class);
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long[] capacities = new long[] { CAPACITY, CAPACITY, CAPACITY };
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String[] hosts = {"host0", "host1", "host2"};
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String[] racks = { RACK0, RACK1, RACK1 };
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String[] UDs = { "ud0", "ud1", "ud2" };
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runBalancerAndVerifyBlockPlacmentPolicy(conf, capacities, hosts, racks,
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UDs, CAPACITY, "host3", RACK2, "ud2");
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}
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private void runBalancerAndVerifyBlockPlacmentPolicy(Configuration conf,
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long[] capacities, String[] hosts, String[] racks, String[] UDs,
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long newCapacity, String newHost, String newRack, String newUD)
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throws Exception {
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int numOfDatanodes = capacities.length;
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cluster = new MiniDFSCluster.Builder(conf).numDataNodes(capacities.length)
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.hosts(hosts).racks(racks).simulatedCapacities(capacities).build();
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DatanodeManager dm = cluster.getNamesystem().getBlockManager().
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getDatanodeManager();
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if (UDs != null) {
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for(int i = 0; i < UDs.length; i++) {
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DatanodeID datanodeId = cluster.getDataNodes().get(i).getDatanodeId();
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dm.getDatanode(datanodeId).setUpgradeDomain(UDs[i]);
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}
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}
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try {
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cluster.waitActive();
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client = NameNodeProxies.createProxy(conf,
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cluster.getFileSystem(0).getUri(), ClientProtocol.class).getProxy();
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// fill up the cluster to be 80% full
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long totalCapacity = sum(capacities);
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long totalUsedSpace = totalCapacity * 8 / 10;
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final long fileSize = totalUsedSpace / numOfDatanodes;
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DFSTestUtil.createFile(cluster.getFileSystem(0), filePath, false, 1024,
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fileSize, DEFAULT_BLOCK_SIZE, (short) numOfDatanodes, 0, false);
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// start up an empty node with the same capacity on the same rack as the
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// pinned host.
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cluster.startDataNodes(conf, 1, true, null, new String[] { newRack },
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new String[] { newHost }, new long[] { newCapacity });
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if (newUD != null) {
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DatanodeID newId = cluster.getDataNodes().get(
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numOfDatanodes).getDatanodeId();
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dm.getDatanode(newId).setUpgradeDomain(newUD);
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}
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totalCapacity += newCapacity;
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// run balancer and validate results
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waitForHeartBeat(totalUsedSpace, totalCapacity, client, cluster);
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// start rebalancing
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Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
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Balancer.run(namenodes, BalancerParameters.DEFAULT, conf);
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BlockPlacementPolicy placementPolicy =
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cluster.getNamesystem().getBlockManager().getBlockPlacementPolicy();
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List<LocatedBlock> locatedBlocks = client.
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getBlockLocations(fileName, 0, fileSize).getLocatedBlocks();
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for (LocatedBlock locatedBlock : locatedBlocks) {
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BlockPlacementStatus status = placementPolicy.verifyBlockPlacement(
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locatedBlock.getLocations(), numOfDatanodes);
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assertTrue(status.isPlacementPolicySatisfied());
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}
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} finally {
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cluster.shutdown();
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}
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}
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/**
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* Wait until balanced: each datanode gives utilization within
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* BALANCE_ALLOWED_VARIANCE of average
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@ -1600,144 +1413,6 @@ public class TestBalancer {
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CAPACITY, RACK2, new PortNumberBasedNodes(3, 0, 1), true, true);
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}
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@Test(timeout = 100000)
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public void testMaxIterationTime() throws Exception {
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final Configuration conf = new HdfsConfiguration();
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initConf(conf);
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int blockSize = 10*1024*1024; // 10MB block size
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conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, blockSize);
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conf.setInt(DFSConfigKeys.DFS_BYTES_PER_CHECKSUM_KEY, blockSize);
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// limit the worker thread count of Balancer to have only 1 queue per DN
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conf.setInt(DFSConfigKeys.DFS_BALANCER_MOVERTHREADS_KEY, 1);
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// limit the bandwidth to 4MB per sec to emulate slow block moves
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conf.setLong(DFSConfigKeys.DFS_DATANODE_BALANCE_BANDWIDTHPERSEC_KEY,
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4 * 1024 * 1024);
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// set client socket timeout to have an IN_PROGRESS notification back from
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// the DataNode about the copy in every second.
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conf.setLong(DFSConfigKeys.DFS_CLIENT_SOCKET_TIMEOUT_KEY, 2000L);
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// set max iteration time to 2 seconds to timeout before moving any block
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conf.setLong(DFSConfigKeys.DFS_BALANCER_MAX_ITERATION_TIME_KEY, 2000L);
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// setup the cluster
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final long capacity = 10L * blockSize;
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final long[] dnCapacities = new long[] {capacity, capacity};
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final short rep = 1;
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final long seed = 0xFAFAFA;
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cluster = new MiniDFSCluster.Builder(conf)
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.numDataNodes(0)
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.build();
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try {
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cluster.getConfiguration(0).setInt(DFSConfigKeys.DFS_REPLICATION_KEY, 1);
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conf.setInt(DFSConfigKeys.DFS_REPLICATION_KEY, 1);
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cluster.startDataNodes(conf, 1, true, null, null, dnCapacities);
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cluster.waitClusterUp();
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cluster.waitActive();
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final Path path = new Path("/testMaxIterationTime.dat");
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DistributedFileSystem fs = cluster.getFileSystem();
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// fill the DN to 40%
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DFSTestUtil.createFile(fs, path, 4L * blockSize, rep, seed);
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// start a new DN
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cluster.startDataNodes(conf, 1, true, null, null, dnCapacities);
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cluster.triggerHeartbeats();
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// setup Balancer and run one iteration
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List<NameNodeConnector> connectors = Collections.emptyList();
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try {
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BalancerParameters bParams = BalancerParameters.DEFAULT;
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// set maxIdleIterations to 1 for NO_MOVE_PROGRESS to be
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// reported when there is no block move
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connectors = NameNodeConnector.newNameNodeConnectors(
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DFSUtil.getInternalNsRpcUris(conf), Balancer.class.getSimpleName(),
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Balancer.BALANCER_ID_PATH, conf, 1);
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for (NameNodeConnector nnc : connectors) {
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LOG.info("NNC to work on: " + nnc);
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Balancer b = new Balancer(nnc, bParams, conf);
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Result r = b.runOneIteration();
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// Since no block cannot be moved in 2 seconds (i.e.,
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// 4MB/s * 2s = 8MB < 10MB), NO_MOVE_PROGRESS will be reported.
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// When a block move is not canceled in 2 seconds properly and then
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// a block is moved unexpectedly, IN_PROGRESS will be reported.
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assertEquals("We expect ExitStatus.NO_MOVE_PROGRESS to be reported.",
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ExitStatus.NO_MOVE_PROGRESS, r.getExitStatus());
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assertEquals(0, r.getBlocksMoved());
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}
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} finally {
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for (NameNodeConnector nnc : connectors) {
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IOUtils.cleanupWithLogger(null, nnc);
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}
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}
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} finally {
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cluster.shutdown(true, true);
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}
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}
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/*
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* Test Balancer with Ram_Disk configured
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* One DN has two files on RAM_DISK, other DN has no files on RAM_DISK.
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* Then verify that the balancer does not migrate files on RAM_DISK across DN.
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*/
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@Test(timeout=300000)
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public void testBalancerWithRamDisk() throws Exception {
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final int SEED = 0xFADED;
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final short REPL_FACT = 1;
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Configuration conf = new Configuration();
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final int defaultRamDiskCapacity = 10;
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final long ramDiskStorageLimit =
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((long) defaultRamDiskCapacity * DEFAULT_RAM_DISK_BLOCK_SIZE) +
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(DEFAULT_RAM_DISK_BLOCK_SIZE - 1);
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final long diskStorageLimit =
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((long) defaultRamDiskCapacity * DEFAULT_RAM_DISK_BLOCK_SIZE) +
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(DEFAULT_RAM_DISK_BLOCK_SIZE - 1);
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initConfWithRamDisk(conf, ramDiskStorageLimit);
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cluster = new MiniDFSCluster
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.Builder(conf)
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.numDataNodes(1)
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.storageCapacities(new long[] { ramDiskStorageLimit, diskStorageLimit })
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.storageTypes(new StorageType[] { RAM_DISK, DEFAULT })
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.build();
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cluster.waitActive();
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// Create few files on RAM_DISK
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final String METHOD_NAME = GenericTestUtils.getMethodName();
|
||||
final Path path1 = new Path("/" + METHOD_NAME + ".01.dat");
|
||||
final Path path2 = new Path("/" + METHOD_NAME + ".02.dat");
|
||||
|
||||
DistributedFileSystem fs = cluster.getFileSystem();
|
||||
DFSClient client = fs.getClient();
|
||||
DFSTestUtil.createFile(fs, path1, true,
|
||||
DEFAULT_RAM_DISK_BLOCK_SIZE, 4 * DEFAULT_RAM_DISK_BLOCK_SIZE,
|
||||
DEFAULT_RAM_DISK_BLOCK_SIZE, REPL_FACT, SEED, true);
|
||||
DFSTestUtil.createFile(fs, path2, true,
|
||||
DEFAULT_RAM_DISK_BLOCK_SIZE, 1 * DEFAULT_RAM_DISK_BLOCK_SIZE,
|
||||
DEFAULT_RAM_DISK_BLOCK_SIZE, REPL_FACT, SEED, true);
|
||||
|
||||
// Sleep for a short time to allow the lazy writer thread to do its job
|
||||
Thread.sleep(6 * 1000);
|
||||
|
||||
// Add another fresh DN with the same type/capacity without files on RAM_DISK
|
||||
StorageType[][] storageTypes = new StorageType[][] {{RAM_DISK, DEFAULT}};
|
||||
long[][] storageCapacities = new long[][]{{ramDiskStorageLimit,
|
||||
diskStorageLimit}};
|
||||
cluster.startDataNodes(conf, REPL_FACT, storageTypes, true, null,
|
||||
null, null, storageCapacities, null, false, false, false, null);
|
||||
|
||||
cluster.triggerHeartbeats();
|
||||
Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
|
||||
|
||||
// Run Balancer
|
||||
final BalancerParameters p = BalancerParameters.DEFAULT;
|
||||
final int r = Balancer.run(namenodes, p, conf);
|
||||
|
||||
// Validate no RAM_DISK block should be moved
|
||||
assertEquals(ExitStatus.NO_MOVE_PROGRESS.getExitCode(), r);
|
||||
|
||||
// Verify files are still on RAM_DISK
|
||||
DFSTestUtil.verifyFileReplicasOnStorageType(fs, client, path1, RAM_DISK);
|
||||
DFSTestUtil.verifyFileReplicasOnStorageType(fs, client, path2, RAM_DISK);
|
||||
}
|
||||
|
||||
/**
|
||||
* Check that the balancer exits when there is an unfinalized upgrade.
|
||||
*/
|
||||
|
|
@ -1800,66 +1475,6 @@ public class TestBalancer {
|
|||
Balancer.run(namenodes, p, conf));
|
||||
}
|
||||
|
||||
/**
|
||||
* Test special case. Two replicas belong to same block should not in same node.
|
||||
* We have 2 nodes.
|
||||
* We have a block in (DN0,SSD) and (DN1,DISK).
|
||||
* Replica in (DN0,SSD) should not be moved to (DN1,SSD).
|
||||
* Otherwise DN1 has 2 replicas.
|
||||
*/
|
||||
@Test(timeout=100000)
|
||||
public void testTwoReplicaShouldNotInSameDN() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
|
||||
int blockSize = 5 * 1024 * 1024 ;
|
||||
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, blockSize);
|
||||
conf.setLong(DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY, 1L);
|
||||
conf.setLong(DFSConfigKeys.DFS_NAMENODE_REDUNDANCY_INTERVAL_SECONDS_KEY,
|
||||
1L);
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 1L);
|
||||
|
||||
int numOfDatanodes =2;
|
||||
cluster = new MiniDFSCluster.Builder(conf)
|
||||
.numDataNodes(2)
|
||||
.racks(new String[]{"/default/rack0", "/default/rack0"})
|
||||
.storagesPerDatanode(2)
|
||||
.storageTypes(new StorageType[][]{
|
||||
{StorageType.SSD, StorageType.DISK},
|
||||
{StorageType.SSD, StorageType.DISK}})
|
||||
.storageCapacities(new long[][]{
|
||||
{100 * blockSize, 20 * blockSize},
|
||||
{20 * blockSize, 100 * blockSize}})
|
||||
.build();
|
||||
cluster.waitActive();
|
||||
|
||||
//set "/bar" directory with ONE_SSD storage policy.
|
||||
DistributedFileSystem fs = cluster.getFileSystem();
|
||||
Path barDir = new Path("/bar");
|
||||
fs.mkdir(barDir,new FsPermission((short)777));
|
||||
fs.setStoragePolicy(barDir, HdfsConstants.ONESSD_STORAGE_POLICY_NAME);
|
||||
|
||||
// Insert 30 blocks. So (DN0,SSD) and (DN1,DISK) are about half full,
|
||||
// and (DN0,SSD) and (DN1,DISK) are about 15% full.
|
||||
long fileLen = 30 * blockSize;
|
||||
// fooFile has ONE_SSD policy. So
|
||||
// (DN0,SSD) and (DN1,DISK) have 2 replicas belong to same block.
|
||||
// (DN0,DISK) and (DN1,SSD) have 2 replicas belong to same block.
|
||||
Path fooFile = new Path(barDir, "foo");
|
||||
createFile(cluster, fooFile, fileLen, (short) numOfDatanodes, 0);
|
||||
// update space info
|
||||
cluster.triggerHeartbeats();
|
||||
|
||||
BalancerParameters p = BalancerParameters.DEFAULT;
|
||||
Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
|
||||
final int r = Balancer.run(namenodes, p, conf);
|
||||
|
||||
// Replica in (DN0,SSD) was not moved to (DN1,SSD), because (DN1,DISK)
|
||||
// already has one. Otherwise DN1 will have 2 replicas.
|
||||
// For same reason, no replicas were moved.
|
||||
assertEquals(ExitStatus.NO_MOVE_PROGRESS.getExitCode(), r);
|
||||
}
|
||||
|
||||
/**
|
||||
* Test running many balancer simultaneously.
|
||||
*
|
||||
|
|
@ -1931,121 +1546,6 @@ public class TestBalancer {
|
|||
ExitStatus.SUCCESS.getExitCode(), exitCode);
|
||||
}
|
||||
|
||||
/** Balancer should not move blocks with size < minBlockSize. */
|
||||
@Test(timeout=60000)
|
||||
public void testMinBlockSizeAndSourceNodes() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
|
||||
final short replication = 3;
|
||||
final long[] lengths = {10, 10, 10, 10};
|
||||
final long[] capacities = new long[replication];
|
||||
final long totalUsed = capacities.length * sum(lengths);
|
||||
Arrays.fill(capacities, 1000);
|
||||
|
||||
cluster = new MiniDFSCluster.Builder(conf)
|
||||
.numDataNodes(capacities.length)
|
||||
.simulatedCapacities(capacities)
|
||||
.build();
|
||||
final DistributedFileSystem dfs = cluster.getFileSystem();
|
||||
cluster.waitActive();
|
||||
client = NameNodeProxies.createProxy(conf, dfs.getUri(),
|
||||
ClientProtocol.class).getProxy();
|
||||
|
||||
// fill up the cluster to be 80% full
|
||||
for(int i = 0; i < lengths.length; i++) {
|
||||
final long size = lengths[i];
|
||||
final Path p = new Path("/file" + i + "_size" + size);
|
||||
try(OutputStream out = dfs.create(p)) {
|
||||
for(int j = 0; j < size; j++) {
|
||||
out.write(j);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// start up an empty node with the same capacity
|
||||
cluster.startDataNodes(conf, capacities.length, true, null, null, capacities);
|
||||
LOG.info("capacities = " + Arrays.toString(capacities));
|
||||
LOG.info("totalUsedSpace= " + totalUsed);
|
||||
LOG.info("lengths = " + Arrays.toString(lengths) + ", #=" + lengths.length);
|
||||
waitForHeartBeat(totalUsed, 2*capacities[0]*capacities.length, client, cluster);
|
||||
|
||||
final Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
|
||||
|
||||
{ // run Balancer with min-block-size=50
|
||||
final BalancerParameters p = Balancer.Cli.parse(new String[] {
|
||||
"-policy", BalancingPolicy.Node.INSTANCE.getName(),
|
||||
"-threshold", "1"
|
||||
});
|
||||
assertEquals(p.getBalancingPolicy(), BalancingPolicy.Node.INSTANCE);
|
||||
assertEquals(p.getThreshold(), 1.0, 0.001);
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 50);
|
||||
final int r = Balancer.run(namenodes, p, conf);
|
||||
assertEquals(ExitStatus.NO_MOVE_PROGRESS.getExitCode(), r);
|
||||
}
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 1);
|
||||
|
||||
{ // run Balancer with empty nodes as source nodes
|
||||
final Set<String> sourceNodes = new HashSet<>();
|
||||
final List<DataNode> datanodes = cluster.getDataNodes();
|
||||
for(int i = capacities.length; i < datanodes.size(); i++) {
|
||||
sourceNodes.add(datanodes.get(i).getDisplayName());
|
||||
}
|
||||
final BalancerParameters p = Balancer.Cli.parse(new String[] {
|
||||
"-policy", BalancingPolicy.Node.INSTANCE.getName(),
|
||||
"-threshold", "1",
|
||||
"-source", StringUtils.join(sourceNodes, ',')
|
||||
});
|
||||
assertEquals(p.getBalancingPolicy(), BalancingPolicy.Node.INSTANCE);
|
||||
assertEquals(p.getThreshold(), 1.0, 0.001);
|
||||
assertEquals(p.getSourceNodes(), sourceNodes);
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 50);
|
||||
final int r = Balancer.run(namenodes, p, conf);
|
||||
assertEquals(ExitStatus.NO_MOVE_BLOCK.getExitCode(), r);
|
||||
}
|
||||
|
||||
{ // run Balancer with a filled node as a source node
|
||||
final Set<String> sourceNodes = new HashSet<>();
|
||||
final List<DataNode> datanodes = cluster.getDataNodes();
|
||||
sourceNodes.add(datanodes.get(0).getDisplayName());
|
||||
final BalancerParameters p = Balancer.Cli.parse(new String[] {
|
||||
"-policy", BalancingPolicy.Node.INSTANCE.getName(),
|
||||
"-threshold", "1",
|
||||
"-source", StringUtils.join(sourceNodes, ',')
|
||||
});
|
||||
assertEquals(p.getBalancingPolicy(), BalancingPolicy.Node.INSTANCE);
|
||||
assertEquals(p.getThreshold(), 1.0, 0.001);
|
||||
assertEquals(p.getSourceNodes(), sourceNodes);
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 1);
|
||||
final int r = Balancer.run(namenodes, p, conf);
|
||||
assertEquals(ExitStatus.NO_MOVE_BLOCK.getExitCode(), r);
|
||||
}
|
||||
|
||||
{ // run Balancer with all filled node as source nodes
|
||||
final Set<String> sourceNodes = new HashSet<>();
|
||||
final List<DataNode> datanodes = cluster.getDataNodes();
|
||||
for(int i = 0; i < capacities.length; i++) {
|
||||
sourceNodes.add(datanodes.get(i).getDisplayName());
|
||||
}
|
||||
final BalancerParameters p = Balancer.Cli.parse(new String[] {
|
||||
"-policy", BalancingPolicy.Node.INSTANCE.getName(),
|
||||
"-threshold", "1",
|
||||
"-source", StringUtils.join(sourceNodes, ',')
|
||||
});
|
||||
assertEquals(p.getBalancingPolicy(), BalancingPolicy.Node.INSTANCE);
|
||||
assertEquals(p.getThreshold(), 1.0, 0.001);
|
||||
assertEquals(p.getSourceNodes(), sourceNodes);
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 1);
|
||||
final int r = Balancer.run(namenodes, p, conf);
|
||||
assertEquals(ExitStatus.SUCCESS.getExitCode(), r);
|
||||
}
|
||||
}
|
||||
|
||||
public void integrationTestWithStripedFile(Configuration conf) throws Exception {
|
||||
initConfWithStripe(conf);
|
||||
doTestBalancerWithStripedFile(conf);
|
||||
|
|
@ -2203,122 +1703,6 @@ public class TestBalancer {
|
|||
getBlocksMaxQps, getBlockCallsPerSecond <= getBlocksMaxQps);
|
||||
}
|
||||
|
||||
@Test(timeout = 60000)
|
||||
public void testBalancerWithSortTopNodes() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
conf.setInt(DFS_HEARTBEAT_INTERVAL_KEY, 30000);
|
||||
|
||||
final long capacity = 1000L;
|
||||
final int diffBetweenNodes = 50;
|
||||
|
||||
// Set up the datanodes with two groups:
|
||||
// 5 over-utilized nodes with 80%, 85%, 90%, 95%, 100% usage
|
||||
// 2 under-utilizaed nodes with 0%, 5% usage
|
||||
// With sortTopNodes option, 100% and 95% used ones will be chosen.
|
||||
final int numOfOverUtilizedDn = 5;
|
||||
final int numOfUnderUtilizedDn = 2;
|
||||
final int totalNumOfDn = numOfOverUtilizedDn + numOfUnderUtilizedDn;
|
||||
final long[] capacityArray = new long[totalNumOfDn];
|
||||
Arrays.fill(capacityArray, capacity);
|
||||
|
||||
cluster = new MiniDFSCluster.Builder(conf)
|
||||
.numDataNodes(totalNumOfDn)
|
||||
.simulatedCapacities(capacityArray)
|
||||
.build();
|
||||
|
||||
cluster.setDataNodesDead();
|
||||
|
||||
List<DataNode> dataNodes = cluster.getDataNodes();
|
||||
|
||||
// Create top used nodes
|
||||
for (int i = 0; i < numOfOverUtilizedDn; i++) {
|
||||
// Bring one node alive
|
||||
DataNodeTestUtils.triggerHeartbeat(dataNodes.get(i));
|
||||
DataNodeTestUtils.triggerBlockReport(dataNodes.get(i));
|
||||
// Create nodes with: 80%, 85%, 90%, 95%, 100%.
|
||||
int capacityForThisDatanode = (int)capacity
|
||||
- diffBetweenNodes * (numOfOverUtilizedDn - i - 1);
|
||||
createFile(cluster, new Path("test_big" + i),
|
||||
capacityForThisDatanode, (short) 1, 0);
|
||||
cluster.setDataNodesDead();
|
||||
}
|
||||
|
||||
// Create under utilized nodes
|
||||
for (int i = numOfUnderUtilizedDn - 1; i >= 0; i--) {
|
||||
int index = i + numOfOverUtilizedDn;
|
||||
// Bring one node alive
|
||||
DataNodeTestUtils.triggerHeartbeat(dataNodes.get(index));
|
||||
DataNodeTestUtils.triggerBlockReport(dataNodes.get(index));
|
||||
// Create nodes with: 5%, 0%
|
||||
int capacityForThisDatanode = diffBetweenNodes * i;
|
||||
createFile(cluster,
|
||||
new Path("test_small" + i),
|
||||
capacityForThisDatanode, (short) 1, 0);
|
||||
cluster.setDataNodesDead();
|
||||
}
|
||||
|
||||
// Bring all nodes alive
|
||||
cluster.triggerHeartbeats();
|
||||
cluster.triggerBlockReports();
|
||||
cluster.waitFirstBRCompleted(0, 6000);
|
||||
|
||||
final BalancerParameters p = Balancer.Cli.parse(new String[] {
|
||||
"-policy", BalancingPolicy.Node.INSTANCE.getName(),
|
||||
"-threshold", "1",
|
||||
"-sortTopNodes"
|
||||
});
|
||||
|
||||
client = NameNodeProxies.createProxy(conf,
|
||||
cluster.getFileSystem(0).getUri(),
|
||||
ClientProtocol.class).getProxy();
|
||||
|
||||
// Set max-size-to-move to small number
|
||||
// so only top two nodes will be chosen in one iteration.
|
||||
conf.setLong(DFS_BALANCER_MAX_SIZE_TO_MOVE_KEY, 99L);
|
||||
|
||||
final Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
|
||||
|
||||
List<NameNodeConnector> connectors = NameNodeConnector
|
||||
.newNameNodeConnectors(namenodes,
|
||||
Balancer.class.getSimpleName(), Balancer.BALANCER_ID_PATH, conf,
|
||||
BalancerParameters.DEFAULT.getMaxIdleIteration());
|
||||
final Balancer b = new Balancer(connectors.get(0), p, conf);
|
||||
Result balancerResult = b.runOneIteration();
|
||||
|
||||
cluster.triggerDeletionReports();
|
||||
cluster.triggerBlockReports();
|
||||
cluster.triggerHeartbeats();
|
||||
|
||||
DatanodeInfo[] datanodeReport = client
|
||||
.getDatanodeReport(DatanodeReportType.ALL);
|
||||
|
||||
long maxUsage = 0;
|
||||
for (int i = 0; i < totalNumOfDn; i++) {
|
||||
maxUsage = Math.max(maxUsage, datanodeReport[i].getDfsUsed());
|
||||
}
|
||||
|
||||
// The 95% usage DN will have 9 blocks of 100B and 1 block of 50B - all for the same file.
|
||||
// The HDFS balancer will choose a block to move from this node randomly. More likely it will
|
||||
// be 100B block. Since 100B is greater than DFS_BALANCER_MAX_SIZE_TO_MOVE_KEY which is 99L,
|
||||
// it will stop here. Total bytes moved from this 95% DN will be 1 block of size 100B.
|
||||
// However, chances are the first block selected to be moved from this 95% DN is the 50B block.
|
||||
// After this block is moved, the total moved size so far would be 50B which is smaller than
|
||||
// DFS_BALANCER_MAX_SIZE_TO_MOVE_KEY (99L), hence it will try to move another block.
|
||||
// The second block will always be of size 100B. So total bytes moved from this 95% DN will be
|
||||
// 2 blocks of size (100B + 50B) 150B.
|
||||
// Hence, overall total blocks moved by HDFS balancer would be either of these 2 options:
|
||||
// a) 2 blocks of total size (100B + 100B)
|
||||
// b) 3 blocks of total size (50B + 100B + 100B)
|
||||
assertTrue("BalancerResult is not as expected. " + balancerResult,
|
||||
(balancerResult.getBytesAlreadyMoved() == 200
|
||||
&& balancerResult.getBlocksMoved() == 2)
|
||||
|| (balancerResult.getBytesAlreadyMoved() == 250
|
||||
&& balancerResult.getBlocksMoved() == 3));
|
||||
// 100% and 95% used nodes will be balanced, so top used will be 900
|
||||
assertEquals(900, maxUsage);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param args
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -0,0 +1,746 @@
|
|||
/*
|
||||
* 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.balancer;
|
||||
|
||||
import org.apache.commons.lang3.StringUtils;
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.fs.Path;
|
||||
import org.apache.hadoop.fs.StorageType;
|
||||
import org.apache.hadoop.fs.permission.FsPermission;
|
||||
import org.apache.hadoop.hdfs.DFSClient;
|
||||
import org.apache.hadoop.hdfs.DFSConfigKeys;
|
||||
import org.apache.hadoop.hdfs.DFSTestUtil;
|
||||
import org.apache.hadoop.hdfs.DFSUtil;
|
||||
import org.apache.hadoop.hdfs.DistributedFileSystem;
|
||||
import org.apache.hadoop.hdfs.HdfsConfiguration;
|
||||
import org.apache.hadoop.hdfs.MiniDFSCluster;
|
||||
import org.apache.hadoop.hdfs.NameNodeProxies;
|
||||
import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys;
|
||||
import org.apache.hadoop.hdfs.protocol.ClientProtocol;
|
||||
import org.apache.hadoop.hdfs.protocol.DatanodeID;
|
||||
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
|
||||
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
|
||||
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.DatanodeManager;
|
||||
import org.apache.hadoop.hdfs.server.datanode.DataNode;
|
||||
import org.apache.hadoop.hdfs.server.datanode.DataNodeTestUtils;
|
||||
import org.apache.hadoop.hdfs.server.datanode.SimulatedFSDataset;
|
||||
import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.LazyPersistTestCase;
|
||||
import org.apache.hadoop.io.IOUtils;
|
||||
import org.apache.hadoop.test.GenericTestUtils;
|
||||
import org.junit.After;
|
||||
import org.junit.Test;
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
import org.slf4j.event.Level;
|
||||
|
||||
import java.io.OutputStream;
|
||||
import java.net.InetSocketAddress;
|
||||
import java.net.URI;
|
||||
import java.util.Arrays;
|
||||
import java.util.Collection;
|
||||
import java.util.Collections;
|
||||
import java.util.HashSet;
|
||||
import java.util.List;
|
||||
import java.util.Set;
|
||||
|
||||
import static org.apache.hadoop.fs.StorageType.DEFAULT;
|
||||
import static org.apache.hadoop.fs.StorageType.RAM_DISK;
|
||||
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BALANCER_MAX_SIZE_TO_MOVE_KEY;
|
||||
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BLOCK_SIZE_KEY;
|
||||
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_BLOCK_PINNING_ENABLED;
|
||||
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_LAZY_WRITER_INTERVAL_SEC;
|
||||
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_MAX_LOCKED_MEMORY_KEY;
|
||||
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY;
|
||||
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_KEY;
|
||||
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_LAZY_PERSIST_FILE_SCRUB_INTERVAL_SEC;
|
||||
import static org.apache.hadoop.test.PlatformAssumptions.assumeNotWindows;
|
||||
import static org.junit.Assert.assertEquals;
|
||||
import static org.junit.Assert.assertTrue;
|
||||
|
||||
/**
|
||||
* Some long running Balancer tasks.
|
||||
*/
|
||||
public class TestBalancerLongRunningTasks {
|
||||
|
||||
private static final Logger LOG =
|
||||
LoggerFactory.getLogger(TestBalancerLongRunningTasks.class);
|
||||
|
||||
static {
|
||||
GenericTestUtils.setLogLevel(Balancer.LOG, Level.TRACE);
|
||||
GenericTestUtils.setLogLevel(Dispatcher.LOG, Level.DEBUG);
|
||||
}
|
||||
|
||||
private final static long CAPACITY = 5000L;
|
||||
private final static String RACK0 = "/rack0";
|
||||
private final static String RACK1 = "/rack1";
|
||||
private final static String RACK2 = "/rack2";
|
||||
private final static String FILE_NAME = "/tmp.txt";
|
||||
private final static Path FILE_PATH = new Path(FILE_NAME);
|
||||
private MiniDFSCluster cluster;
|
||||
|
||||
@After
|
||||
public void shutdown() throws Exception {
|
||||
if (cluster != null) {
|
||||
cluster.shutdown();
|
||||
cluster = null;
|
||||
}
|
||||
}
|
||||
|
||||
private ClientProtocol client;
|
||||
|
||||
static final int DEFAULT_BLOCK_SIZE = 100;
|
||||
static final int DEFAULT_RAM_DISK_BLOCK_SIZE = 5 * 1024 * 1024;
|
||||
|
||||
static {
|
||||
initTestSetup();
|
||||
}
|
||||
|
||||
public static void initTestSetup() {
|
||||
// do not create id file since it occupies the disk space
|
||||
NameNodeConnector.setWrite2IdFile(false);
|
||||
}
|
||||
|
||||
static void initConf(Configuration conf) {
|
||||
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, DEFAULT_BLOCK_SIZE);
|
||||
conf.setInt(DFSConfigKeys.DFS_BYTES_PER_CHECKSUM_KEY, DEFAULT_BLOCK_SIZE);
|
||||
conf.setLong(DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY, 1L);
|
||||
conf.setInt(DFSConfigKeys.DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_KEY, 500);
|
||||
conf.setLong(DFSConfigKeys.DFS_NAMENODE_REDUNDANCY_INTERVAL_SECONDS_KEY,
|
||||
1L);
|
||||
SimulatedFSDataset.setFactory(conf);
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_MOVEDWINWIDTH_KEY, 2000L);
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 1L);
|
||||
conf.setInt(DFSConfigKeys.DFS_BALANCER_MAX_NO_MOVE_INTERVAL_KEY, 5 * 1000);
|
||||
}
|
||||
|
||||
static void initConfWithRamDisk(Configuration conf,
|
||||
long ramDiskCapacity) {
|
||||
conf.setLong(DFS_BLOCK_SIZE_KEY, DEFAULT_RAM_DISK_BLOCK_SIZE);
|
||||
conf.setLong(DFS_DATANODE_MAX_LOCKED_MEMORY_KEY, ramDiskCapacity);
|
||||
conf.setInt(DFS_NAMENODE_LAZY_PERSIST_FILE_SCRUB_INTERVAL_SEC, 3);
|
||||
conf.setLong(DFS_HEARTBEAT_INTERVAL_KEY, 1);
|
||||
conf.setInt(DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_KEY, 500);
|
||||
conf.setInt(DFS_DATANODE_LAZY_WRITER_INTERVAL_SEC, 1);
|
||||
conf.setInt(DFSConfigKeys.DFS_BALANCER_MAX_NO_MOVE_INTERVAL_KEY, 5 * 1000);
|
||||
LazyPersistTestCase.initCacheManipulator();
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 1L);
|
||||
}
|
||||
|
||||
/**
|
||||
* Test special case. Two replicas belong to same block should not in same
|
||||
* node.
|
||||
* We have 2 nodes.
|
||||
* We have a block in (DN0,SSD) and (DN1,DISK).
|
||||
* Replica in (DN0,SSD) should not be moved to (DN1,SSD).
|
||||
* Otherwise DN1 has 2 replicas.
|
||||
*/
|
||||
@Test(timeout = 100000)
|
||||
public void testTwoReplicaShouldNotInSameDN() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
|
||||
int blockSize = 5 * 1024 * 1024;
|
||||
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, blockSize);
|
||||
conf.setLong(DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY, 1L);
|
||||
conf.setLong(DFSConfigKeys.DFS_NAMENODE_REDUNDANCY_INTERVAL_SECONDS_KEY,
|
||||
1L);
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 1L);
|
||||
|
||||
int numOfDatanodes = 2;
|
||||
cluster = new MiniDFSCluster.Builder(conf)
|
||||
.numDataNodes(2)
|
||||
.racks(new String[]{"/default/rack0", "/default/rack0"})
|
||||
.storagesPerDatanode(2)
|
||||
.storageTypes(new StorageType[][]{
|
||||
{StorageType.SSD, StorageType.DISK},
|
||||
{StorageType.SSD, StorageType.DISK}})
|
||||
.storageCapacities(new long[][]{
|
||||
{100 * blockSize, 20 * blockSize},
|
||||
{20 * blockSize, 100 * blockSize}})
|
||||
.build();
|
||||
cluster.waitActive();
|
||||
|
||||
//set "/bar" directory with ONE_SSD storage policy.
|
||||
DistributedFileSystem fs = cluster.getFileSystem();
|
||||
Path barDir = new Path("/bar");
|
||||
fs.mkdir(barDir, new FsPermission((short) 777));
|
||||
fs.setStoragePolicy(barDir, HdfsConstants.ONESSD_STORAGE_POLICY_NAME);
|
||||
|
||||
// Insert 30 blocks. So (DN0,SSD) and (DN1,DISK) are about half full,
|
||||
// and (DN0,SSD) and (DN1,DISK) are about 15% full.
|
||||
long fileLen = 30 * blockSize;
|
||||
// fooFile has ONE_SSD policy. So
|
||||
// (DN0,SSD) and (DN1,DISK) have 2 replicas belong to same block.
|
||||
// (DN0,DISK) and (DN1,SSD) have 2 replicas belong to same block.
|
||||
Path fooFile = new Path(barDir, "foo");
|
||||
TestBalancer.createFile(cluster, fooFile, fileLen, (short) numOfDatanodes,
|
||||
0);
|
||||
// update space info
|
||||
cluster.triggerHeartbeats();
|
||||
|
||||
BalancerParameters p = BalancerParameters.DEFAULT;
|
||||
Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
|
||||
final int r = Balancer.run(namenodes, p, conf);
|
||||
|
||||
// Replica in (DN0,SSD) was not moved to (DN1,SSD), because (DN1,DISK)
|
||||
// already has one. Otherwise DN1 will have 2 replicas.
|
||||
// For same reason, no replicas were moved.
|
||||
assertEquals(ExitStatus.NO_MOVE_PROGRESS.getExitCode(), r);
|
||||
}
|
||||
|
||||
/*
|
||||
* Test Balancer with Ram_Disk configured
|
||||
* One DN has two files on RAM_DISK, other DN has no files on RAM_DISK.
|
||||
* Then verify that the balancer does not migrate files on RAM_DISK across DN.
|
||||
*/
|
||||
@Test(timeout = 300000)
|
||||
public void testBalancerWithRamDisk() throws Exception {
|
||||
final int seed = 0xFADED;
|
||||
final short replicationFactor = 1;
|
||||
Configuration conf = new Configuration();
|
||||
|
||||
final int defaultRamDiskCapacity = 10;
|
||||
final long ramDiskStorageLimit =
|
||||
((long) defaultRamDiskCapacity * DEFAULT_RAM_DISK_BLOCK_SIZE) +
|
||||
(DEFAULT_RAM_DISK_BLOCK_SIZE - 1);
|
||||
final long diskStorageLimit =
|
||||
((long) defaultRamDiskCapacity * DEFAULT_RAM_DISK_BLOCK_SIZE) +
|
||||
(DEFAULT_RAM_DISK_BLOCK_SIZE - 1);
|
||||
|
||||
initConfWithRamDisk(conf, ramDiskStorageLimit);
|
||||
|
||||
cluster = new MiniDFSCluster
|
||||
.Builder(conf)
|
||||
.numDataNodes(1)
|
||||
.storageCapacities(new long[]{ramDiskStorageLimit, diskStorageLimit})
|
||||
.storageTypes(new StorageType[]{RAM_DISK, DEFAULT})
|
||||
.build();
|
||||
|
||||
cluster.waitActive();
|
||||
// Create few files on RAM_DISK
|
||||
final String methodName = GenericTestUtils.getMethodName();
|
||||
final Path path1 = new Path("/" + methodName + ".01.dat");
|
||||
final Path path2 = new Path("/" + methodName + ".02.dat");
|
||||
|
||||
DistributedFileSystem fs = cluster.getFileSystem();
|
||||
DFSClient dfsClient = fs.getClient();
|
||||
DFSTestUtil.createFile(fs, path1, true,
|
||||
DEFAULT_RAM_DISK_BLOCK_SIZE, 4 * DEFAULT_RAM_DISK_BLOCK_SIZE,
|
||||
DEFAULT_RAM_DISK_BLOCK_SIZE, replicationFactor, seed, true);
|
||||
DFSTestUtil.createFile(fs, path2, true,
|
||||
DEFAULT_RAM_DISK_BLOCK_SIZE, 1 * DEFAULT_RAM_DISK_BLOCK_SIZE,
|
||||
DEFAULT_RAM_DISK_BLOCK_SIZE, replicationFactor, seed, true);
|
||||
|
||||
// Sleep for a short time to allow the lazy writer thread to do its job
|
||||
Thread.sleep(6 * 1000);
|
||||
|
||||
// Add another fresh DN with the same type/capacity without files on
|
||||
// RAM_DISK
|
||||
StorageType[][] storageTypes = new StorageType[][]{{RAM_DISK, DEFAULT}};
|
||||
long[][] storageCapacities = new long[][]{{ramDiskStorageLimit,
|
||||
diskStorageLimit}};
|
||||
cluster.startDataNodes(conf, replicationFactor, storageTypes, true, null,
|
||||
null, null, storageCapacities, null, false, false, false, null);
|
||||
|
||||
cluster.triggerHeartbeats();
|
||||
Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
|
||||
|
||||
// Run Balancer
|
||||
final BalancerParameters p = BalancerParameters.DEFAULT;
|
||||
final int r = Balancer.run(namenodes, p, conf);
|
||||
|
||||
// Validate no RAM_DISK block should be moved
|
||||
assertEquals(ExitStatus.NO_MOVE_PROGRESS.getExitCode(), r);
|
||||
|
||||
// Verify files are still on RAM_DISK
|
||||
DFSTestUtil.verifyFileReplicasOnStorageType(fs, dfsClient, path1, RAM_DISK);
|
||||
DFSTestUtil.verifyFileReplicasOnStorageType(fs, dfsClient, path2, RAM_DISK);
|
||||
}
|
||||
|
||||
/**
|
||||
* Balancer should not move blocks with size < minBlockSize.
|
||||
*/
|
||||
@Test(timeout = 60000)
|
||||
public void testMinBlockSizeAndSourceNodes() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
|
||||
final short replication = 3;
|
||||
final long[] lengths = {10, 10, 10, 10};
|
||||
final long[] capacities = new long[replication];
|
||||
final long totalUsed = capacities.length * TestBalancer.sum(lengths);
|
||||
Arrays.fill(capacities, 1000);
|
||||
|
||||
cluster = new MiniDFSCluster.Builder(conf)
|
||||
.numDataNodes(capacities.length)
|
||||
.simulatedCapacities(capacities)
|
||||
.build();
|
||||
final DistributedFileSystem dfs = cluster.getFileSystem();
|
||||
cluster.waitActive();
|
||||
client = NameNodeProxies.createProxy(conf, dfs.getUri(),
|
||||
ClientProtocol.class).getProxy();
|
||||
|
||||
// fill up the cluster to be 80% full
|
||||
for (int i = 0; i < lengths.length; i++) {
|
||||
final long size = lengths[i];
|
||||
final Path p = new Path("/file" + i + "_size" + size);
|
||||
try (OutputStream out = dfs.create(p)) {
|
||||
for (int j = 0; j < size; j++) {
|
||||
out.write(j);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// start up an empty node with the same capacity
|
||||
cluster.startDataNodes(conf, capacities.length, true, null, null, capacities);
|
||||
LOG.info("capacities = " + Arrays.toString(capacities));
|
||||
LOG.info("totalUsedSpace= " + totalUsed);
|
||||
LOG.info("lengths = " + Arrays.toString(lengths) + ", #=" + lengths.length);
|
||||
TestBalancer.waitForHeartBeat(totalUsed,
|
||||
2 * capacities[0] * capacities.length, client, cluster);
|
||||
|
||||
final Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
|
||||
|
||||
{ // run Balancer with min-block-size=50
|
||||
final BalancerParameters p = Balancer.Cli.parse(new String[]{
|
||||
"-policy", BalancingPolicy.Node.INSTANCE.getName(),
|
||||
"-threshold", "1"
|
||||
});
|
||||
assertEquals(p.getBalancingPolicy(), BalancingPolicy.Node.INSTANCE);
|
||||
assertEquals(p.getThreshold(), 1.0, 0.001);
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 50);
|
||||
final int r = Balancer.run(namenodes, p, conf);
|
||||
assertEquals(ExitStatus.NO_MOVE_PROGRESS.getExitCode(), r);
|
||||
}
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 1);
|
||||
|
||||
{ // run Balancer with empty nodes as source nodes
|
||||
final Set<String> sourceNodes = new HashSet<>();
|
||||
final List<DataNode> datanodes = cluster.getDataNodes();
|
||||
for (int i = capacities.length; i < datanodes.size(); i++) {
|
||||
sourceNodes.add(datanodes.get(i).getDisplayName());
|
||||
}
|
||||
final BalancerParameters p = Balancer.Cli.parse(new String[]{
|
||||
"-policy", BalancingPolicy.Node.INSTANCE.getName(),
|
||||
"-threshold", "1",
|
||||
"-source", StringUtils.join(sourceNodes, ',')
|
||||
});
|
||||
assertEquals(p.getBalancingPolicy(), BalancingPolicy.Node.INSTANCE);
|
||||
assertEquals(p.getThreshold(), 1.0, 0.001);
|
||||
assertEquals(p.getSourceNodes(), sourceNodes);
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 50);
|
||||
final int r = Balancer.run(namenodes, p, conf);
|
||||
assertEquals(ExitStatus.NO_MOVE_BLOCK.getExitCode(), r);
|
||||
}
|
||||
|
||||
{ // run Balancer with a filled node as a source node
|
||||
final Set<String> sourceNodes = new HashSet<>();
|
||||
final List<DataNode> datanodes = cluster.getDataNodes();
|
||||
sourceNodes.add(datanodes.get(0).getDisplayName());
|
||||
final BalancerParameters p = Balancer.Cli.parse(new String[]{
|
||||
"-policy", BalancingPolicy.Node.INSTANCE.getName(),
|
||||
"-threshold", "1",
|
||||
"-source", StringUtils.join(sourceNodes, ',')
|
||||
});
|
||||
assertEquals(p.getBalancingPolicy(), BalancingPolicy.Node.INSTANCE);
|
||||
assertEquals(p.getThreshold(), 1.0, 0.001);
|
||||
assertEquals(p.getSourceNodes(), sourceNodes);
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 1);
|
||||
final int r = Balancer.run(namenodes, p, conf);
|
||||
assertEquals(ExitStatus.NO_MOVE_BLOCK.getExitCode(), r);
|
||||
}
|
||||
|
||||
{ // run Balancer with all filled node as source nodes
|
||||
final Set<String> sourceNodes = new HashSet<>();
|
||||
final List<DataNode> datanodes = cluster.getDataNodes();
|
||||
for (int i = 0; i < capacities.length; i++) {
|
||||
sourceNodes.add(datanodes.get(i).getDisplayName());
|
||||
}
|
||||
final BalancerParameters p = Balancer.Cli.parse(new String[]{
|
||||
"-policy", BalancingPolicy.Node.INSTANCE.getName(),
|
||||
"-threshold", "1",
|
||||
"-source", StringUtils.join(sourceNodes, ',')
|
||||
});
|
||||
assertEquals(p.getBalancingPolicy(), BalancingPolicy.Node.INSTANCE);
|
||||
assertEquals(p.getThreshold(), 1.0, 0.001);
|
||||
assertEquals(p.getSourceNodes(), sourceNodes);
|
||||
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_GETBLOCKS_MIN_BLOCK_SIZE_KEY, 1);
|
||||
final int r = Balancer.run(namenodes, p, conf);
|
||||
assertEquals(ExitStatus.SUCCESS.getExitCode(), r);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify balancer won't violate upgrade domain block placement policy.
|
||||
*
|
||||
* @throws Exception
|
||||
*/
|
||||
@Test(timeout = 100000)
|
||||
public void testUpgradeDomainPolicyAfterBalance() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
conf.setClass(DFSConfigKeys.DFS_BLOCK_REPLICATOR_CLASSNAME_KEY,
|
||||
BlockPlacementPolicyWithUpgradeDomain.class,
|
||||
BlockPlacementPolicy.class);
|
||||
long[] capacities = new long[]{CAPACITY, CAPACITY, CAPACITY};
|
||||
String[] hosts = {"host0", "host1", "host2"};
|
||||
String[] racks = {RACK0, RACK1, RACK1};
|
||||
String[] uds = {"ud0", "ud1", "ud2"};
|
||||
runBalancerAndVerifyBlockPlacmentPolicy(conf, capacities, hosts, racks,
|
||||
uds, CAPACITY, "host3", RACK2, "ud2");
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify balancer won't violate the default block placement policy.
|
||||
*
|
||||
* @throws Exception
|
||||
*/
|
||||
@Test(timeout = 100000)
|
||||
public void testRackPolicyAfterBalance() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
long[] capacities = new long[]{CAPACITY, CAPACITY};
|
||||
String[] hosts = {"host0", "host1"};
|
||||
String[] racks = {RACK0, RACK1};
|
||||
runBalancerAndVerifyBlockPlacmentPolicy(conf, capacities, hosts, racks,
|
||||
null, CAPACITY, "host2", RACK1, null);
|
||||
}
|
||||
|
||||
private void runBalancerAndVerifyBlockPlacmentPolicy(Configuration conf,
|
||||
long[] capacities, String[] hosts, String[] racks, String[] UDs,
|
||||
long newCapacity, String newHost, String newRack, String newUD)
|
||||
throws Exception {
|
||||
int numOfDatanodes = capacities.length;
|
||||
|
||||
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(capacities.length)
|
||||
.hosts(hosts).racks(racks).simulatedCapacities(capacities).build();
|
||||
DatanodeManager dm = cluster.getNamesystem().getBlockManager().
|
||||
getDatanodeManager();
|
||||
if (UDs != null) {
|
||||
for (int i = 0; i < UDs.length; i++) {
|
||||
DatanodeID datanodeId = cluster.getDataNodes().get(i).getDatanodeId();
|
||||
dm.getDatanode(datanodeId).setUpgradeDomain(UDs[i]);
|
||||
}
|
||||
}
|
||||
|
||||
try {
|
||||
cluster.waitActive();
|
||||
client = NameNodeProxies.createProxy(conf,
|
||||
cluster.getFileSystem(0).getUri(), ClientProtocol.class).getProxy();
|
||||
|
||||
// fill up the cluster to be 80% full
|
||||
long totalCapacity = TestBalancer.sum(capacities);
|
||||
long totalUsedSpace = totalCapacity * 8 / 10;
|
||||
|
||||
final long fileSize = totalUsedSpace / numOfDatanodes;
|
||||
DFSTestUtil.createFile(cluster.getFileSystem(0), FILE_PATH, false, 1024,
|
||||
fileSize, DEFAULT_BLOCK_SIZE, (short) numOfDatanodes, 0, false);
|
||||
|
||||
// start up an empty node with the same capacity on the same rack as the
|
||||
// pinned host.
|
||||
cluster.startDataNodes(conf, 1, true, null, new String[]{newRack},
|
||||
new String[]{newHost}, new long[]{newCapacity});
|
||||
if (newUD != null) {
|
||||
DatanodeID newId = cluster.getDataNodes().get(
|
||||
numOfDatanodes).getDatanodeId();
|
||||
dm.getDatanode(newId).setUpgradeDomain(newUD);
|
||||
}
|
||||
totalCapacity += newCapacity;
|
||||
|
||||
// run balancer and validate results
|
||||
TestBalancer.waitForHeartBeat(totalUsedSpace,
|
||||
totalCapacity, client, cluster);
|
||||
|
||||
// start rebalancing
|
||||
Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
|
||||
Balancer.run(namenodes, BalancerParameters.DEFAULT, conf);
|
||||
BlockPlacementPolicy placementPolicy =
|
||||
cluster.getNamesystem().getBlockManager().getBlockPlacementPolicy();
|
||||
List<LocatedBlock> locatedBlocks = client.
|
||||
getBlockLocations(FILE_NAME, 0, fileSize).getLocatedBlocks();
|
||||
for (LocatedBlock locatedBlock : locatedBlocks) {
|
||||
BlockPlacementStatus status = placementPolicy.verifyBlockPlacement(
|
||||
locatedBlock.getLocations(), numOfDatanodes);
|
||||
assertTrue(status.isPlacementPolicySatisfied());
|
||||
}
|
||||
} finally {
|
||||
cluster.shutdown();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Make sure that balancer can't move pinned blocks.
|
||||
* If specified favoredNodes when create file, blocks will be pinned use
|
||||
* sticky bit.
|
||||
*
|
||||
* @throws Exception
|
||||
*/
|
||||
@Test(timeout = 100000)
|
||||
public void testBalancerWithPinnedBlocks() throws Exception {
|
||||
// This test assumes stick-bit based block pin mechanism available only
|
||||
// in Linux/Unix. It can be unblocked on Windows when HDFS-7759 is ready to
|
||||
// provide a different mechanism for Windows.
|
||||
assumeNotWindows();
|
||||
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
conf.setBoolean(DFS_DATANODE_BLOCK_PINNING_ENABLED, true);
|
||||
|
||||
long[] capacities = new long[]{CAPACITY, CAPACITY};
|
||||
String[] hosts = {"host0", "host1"};
|
||||
String[] racks = {RACK0, RACK1};
|
||||
int numOfDatanodes = capacities.length;
|
||||
|
||||
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(capacities.length)
|
||||
.hosts(hosts).racks(racks).simulatedCapacities(capacities).build();
|
||||
|
||||
cluster.waitActive();
|
||||
client = NameNodeProxies.createProxy(conf,
|
||||
cluster.getFileSystem(0).getUri(), ClientProtocol.class).getProxy();
|
||||
|
||||
// fill up the cluster to be 80% full
|
||||
long totalCapacity = TestBalancer.sum(capacities);
|
||||
long totalUsedSpace = totalCapacity * 8 / 10;
|
||||
InetSocketAddress[] favoredNodes = new InetSocketAddress[numOfDatanodes];
|
||||
for (int i = 0; i < favoredNodes.length; i++) {
|
||||
// DFSClient will attempt reverse lookup. In case it resolves
|
||||
// "127.0.0.1" to "localhost", we manually specify the hostname.
|
||||
int port = cluster.getDataNodes().get(i).getXferAddress().getPort();
|
||||
favoredNodes[i] = new InetSocketAddress(hosts[i], port);
|
||||
}
|
||||
|
||||
DFSTestUtil.createFile(cluster.getFileSystem(0), FILE_PATH, false, 1024,
|
||||
totalUsedSpace / numOfDatanodes, DEFAULT_BLOCK_SIZE,
|
||||
(short) numOfDatanodes, 0, false, favoredNodes);
|
||||
|
||||
// start up an empty node with the same capacity
|
||||
cluster.startDataNodes(conf, 1, true, null, new String[]{RACK2},
|
||||
new long[]{CAPACITY});
|
||||
|
||||
totalCapacity += CAPACITY;
|
||||
|
||||
// run balancer and validate results
|
||||
TestBalancer.waitForHeartBeat(totalUsedSpace, totalCapacity, client,
|
||||
cluster);
|
||||
|
||||
// start rebalancing
|
||||
Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
|
||||
int r = Balancer.run(namenodes, BalancerParameters.DEFAULT, conf);
|
||||
assertEquals(ExitStatus.NO_MOVE_PROGRESS.getExitCode(), r);
|
||||
}
|
||||
|
||||
@Test(timeout = 60000)
|
||||
public void testBalancerWithSortTopNodes() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
conf.setInt(DFS_HEARTBEAT_INTERVAL_KEY, 30000);
|
||||
|
||||
final long capacity = 1000L;
|
||||
final int diffBetweenNodes = 50;
|
||||
|
||||
// Set up the datanodes with two groups:
|
||||
// 5 over-utilized nodes with 80%, 85%, 90%, 95%, 100% usage
|
||||
// 2 under-utilizaed nodes with 0%, 5% usage
|
||||
// With sortTopNodes option, 100% and 95% used ones will be chosen.
|
||||
final int numOfOverUtilizedDn = 5;
|
||||
final int numOfUnderUtilizedDn = 2;
|
||||
final int totalNumOfDn = numOfOverUtilizedDn + numOfUnderUtilizedDn;
|
||||
final long[] capacityArray = new long[totalNumOfDn];
|
||||
Arrays.fill(capacityArray, capacity);
|
||||
|
||||
cluster = new MiniDFSCluster.Builder(conf)
|
||||
.numDataNodes(totalNumOfDn)
|
||||
.simulatedCapacities(capacityArray)
|
||||
.build();
|
||||
|
||||
cluster.setDataNodesDead();
|
||||
|
||||
List<DataNode> dataNodes = cluster.getDataNodes();
|
||||
|
||||
// Create top used nodes
|
||||
for (int i = 0; i < numOfOverUtilizedDn; i++) {
|
||||
// Bring one node alive
|
||||
DataNodeTestUtils.triggerHeartbeat(dataNodes.get(i));
|
||||
DataNodeTestUtils.triggerBlockReport(dataNodes.get(i));
|
||||
// Create nodes with: 80%, 85%, 90%, 95%, 100%.
|
||||
int capacityForThisDatanode = (int) capacity
|
||||
- diffBetweenNodes * (numOfOverUtilizedDn - i - 1);
|
||||
TestBalancer.createFile(cluster, new Path("test_big" + i),
|
||||
capacityForThisDatanode, (short) 1, 0);
|
||||
cluster.setDataNodesDead();
|
||||
}
|
||||
|
||||
// Create under utilized nodes
|
||||
for (int i = numOfUnderUtilizedDn - 1; i >= 0; i--) {
|
||||
int index = i + numOfOverUtilizedDn;
|
||||
// Bring one node alive
|
||||
DataNodeTestUtils.triggerHeartbeat(dataNodes.get(index));
|
||||
DataNodeTestUtils.triggerBlockReport(dataNodes.get(index));
|
||||
// Create nodes with: 5%, 0%
|
||||
int capacityForThisDatanode = diffBetweenNodes * i;
|
||||
TestBalancer.createFile(cluster,
|
||||
new Path("test_small" + i),
|
||||
capacityForThisDatanode, (short) 1, 0);
|
||||
cluster.setDataNodesDead();
|
||||
}
|
||||
|
||||
// Bring all nodes alive
|
||||
cluster.triggerHeartbeats();
|
||||
cluster.triggerBlockReports();
|
||||
cluster.waitFirstBRCompleted(0, 6000);
|
||||
|
||||
final BalancerParameters p = Balancer.Cli.parse(new String[]{
|
||||
"-policy", BalancingPolicy.Node.INSTANCE.getName(),
|
||||
"-threshold", "1",
|
||||
"-sortTopNodes"
|
||||
});
|
||||
|
||||
client = NameNodeProxies.createProxy(conf,
|
||||
cluster.getFileSystem(0).getUri(),
|
||||
ClientProtocol.class).getProxy();
|
||||
|
||||
// Set max-size-to-move to small number
|
||||
// so only top two nodes will be chosen in one iteration.
|
||||
conf.setLong(DFS_BALANCER_MAX_SIZE_TO_MOVE_KEY, 99L);
|
||||
|
||||
final Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
|
||||
|
||||
List<NameNodeConnector> connectors = NameNodeConnector
|
||||
.newNameNodeConnectors(namenodes,
|
||||
Balancer.class.getSimpleName(), Balancer.BALANCER_ID_PATH, conf,
|
||||
BalancerParameters.DEFAULT.getMaxIdleIteration());
|
||||
final Balancer b = new Balancer(connectors.get(0), p, conf);
|
||||
Balancer.Result balancerResult = b.runOneIteration();
|
||||
|
||||
cluster.triggerDeletionReports();
|
||||
cluster.triggerBlockReports();
|
||||
cluster.triggerHeartbeats();
|
||||
|
||||
DatanodeInfo[] datanodeReport = client
|
||||
.getDatanodeReport(HdfsConstants.DatanodeReportType.ALL);
|
||||
|
||||
long maxUsage = 0;
|
||||
for (int i = 0; i < totalNumOfDn; i++) {
|
||||
maxUsage = Math.max(maxUsage, datanodeReport[i].getDfsUsed());
|
||||
}
|
||||
|
||||
// The 95% usage DN will have 9 blocks of 100B and 1 block of 50B - all for the same file.
|
||||
// The HDFS balancer will choose a block to move from this node randomly. More likely it will
|
||||
// be 100B block. Since 100B is greater than DFS_BALANCER_MAX_SIZE_TO_MOVE_KEY which is 99L,
|
||||
// it will stop here. Total bytes moved from this 95% DN will be 1 block of size 100B.
|
||||
// However, chances are the first block selected to be moved from this 95% DN is the 50B block.
|
||||
// After this block is moved, the total moved size so far would be 50B which is smaller than
|
||||
// DFS_BALANCER_MAX_SIZE_TO_MOVE_KEY (99L), hence it will try to move another block.
|
||||
// The second block will always be of size 100B. So total bytes moved from this 95% DN will be
|
||||
// 2 blocks of size (100B + 50B) 150B.
|
||||
// Hence, overall total blocks moved by HDFS balancer would be either of these 2 options:
|
||||
// a) 2 blocks of total size (100B + 100B)
|
||||
// b) 3 blocks of total size (50B + 100B + 100B)
|
||||
assertTrue("BalancerResult is not as expected. " + balancerResult,
|
||||
(balancerResult.getBytesAlreadyMoved() == 200
|
||||
&& balancerResult.getBlocksMoved() == 2)
|
||||
|| (balancerResult.getBytesAlreadyMoved() == 250
|
||||
&& balancerResult.getBlocksMoved() == 3));
|
||||
// 100% and 95% used nodes will be balanced, so top used will be 900
|
||||
assertEquals(900, maxUsage);
|
||||
}
|
||||
|
||||
@Test(timeout = 100000)
|
||||
public void testMaxIterationTime() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
int blockSize = 10 * 1024 * 1024; // 10MB block size
|
||||
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, blockSize);
|
||||
conf.setInt(DFSConfigKeys.DFS_BYTES_PER_CHECKSUM_KEY, blockSize);
|
||||
// limit the worker thread count of Balancer to have only 1 queue per DN
|
||||
conf.setInt(DFSConfigKeys.DFS_BALANCER_MOVERTHREADS_KEY, 1);
|
||||
// limit the bandwidth to 4MB per sec to emulate slow block moves
|
||||
conf.setLong(DFSConfigKeys.DFS_DATANODE_BALANCE_BANDWIDTHPERSEC_KEY,
|
||||
4 * 1024 * 1024);
|
||||
// set client socket timeout to have an IN_PROGRESS notification back from
|
||||
// the DataNode about the copy in every second.
|
||||
conf.setLong(HdfsClientConfigKeys.DFS_CLIENT_SOCKET_TIMEOUT_KEY, 2000L);
|
||||
// set max iteration time to 500 ms to timeout before moving any block
|
||||
conf.setLong(DFSConfigKeys.DFS_BALANCER_MAX_ITERATION_TIME_KEY, 500L);
|
||||
// setup the cluster
|
||||
final long capacity = 10L * blockSize;
|
||||
final long[] dnCapacities = new long[]{capacity, capacity};
|
||||
final short rep = 1;
|
||||
final long seed = 0xFAFAFA;
|
||||
cluster = new MiniDFSCluster.Builder(conf)
|
||||
.numDataNodes(0)
|
||||
.build();
|
||||
try {
|
||||
cluster.getConfiguration(0).setInt(DFSConfigKeys.DFS_REPLICATION_KEY, 1);
|
||||
conf.setInt(DFSConfigKeys.DFS_REPLICATION_KEY, 1);
|
||||
cluster.startDataNodes(conf, 1, true, null, null, dnCapacities);
|
||||
cluster.waitClusterUp();
|
||||
cluster.waitActive();
|
||||
final Path path = new Path("/testMaxIterationTime.dat");
|
||||
DistributedFileSystem fs = cluster.getFileSystem();
|
||||
// fill the DN to 40%
|
||||
DFSTestUtil.createFile(fs, path, 4L * blockSize, rep, seed);
|
||||
// start a new DN
|
||||
cluster.startDataNodes(conf, 1, true, null, null, dnCapacities);
|
||||
cluster.triggerHeartbeats();
|
||||
// setup Balancer and run one iteration
|
||||
List<NameNodeConnector> connectors = Collections.emptyList();
|
||||
try {
|
||||
BalancerParameters bParams = BalancerParameters.DEFAULT;
|
||||
// set maxIdleIterations to 1 for NO_MOVE_PROGRESS to be
|
||||
// reported when there is no block move
|
||||
connectors = NameNodeConnector.newNameNodeConnectors(
|
||||
DFSUtil.getInternalNsRpcUris(conf), Balancer.class.getSimpleName(),
|
||||
Balancer.BALANCER_ID_PATH, conf, 1);
|
||||
for (NameNodeConnector nnc : connectors) {
|
||||
LOG.info("NNC to work on: " + nnc);
|
||||
Balancer b = new Balancer(nnc, bParams, conf);
|
||||
Balancer.Result r = b.runOneIteration();
|
||||
// Since no block can be moved in 500 milli-seconds (i.e.,
|
||||
// 4MB/s * 0.5s = 2MB < 10MB), NO_MOVE_PROGRESS will be reported.
|
||||
// When a block move is not canceled in 500 ms properly
|
||||
// (highly unlikely) and then a block is moved unexpectedly,
|
||||
// IN_PROGRESS will be reported. This is highly unlikely unexpected
|
||||
// case. See HDFS-15989.
|
||||
assertEquals("We expect ExitStatus.NO_MOVE_PROGRESS to be reported.",
|
||||
ExitStatus.NO_MOVE_PROGRESS, r.getExitStatus());
|
||||
assertEquals(0, r.getBlocksMoved());
|
||||
}
|
||||
} finally {
|
||||
for (NameNodeConnector nnc : connectors) {
|
||||
IOUtils.cleanupWithLogger(null, nnc);
|
||||
}
|
||||
}
|
||||
} finally {
|
||||
cluster.shutdown(true, true);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue