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HDFS-6441. Add ability to exclude/include specific datanodes while balancing. (Contributed by Benoy Antony and Yu Li) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1614812 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Arpit Agarwal 2014-07-31 06:02:46 +00:00
parent 4996bf8257
commit b8b8f3f5e7
7 changed files with 609 additions and 40 deletions
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14
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java
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@ -27,6 +27,7 @@ import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Date;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
@ -377,6 +378,19 @@ public class StringUtils {
return str.trim().split("\\s*,\\s*");
}
/**
* Trims all the strings in a Collection<String> and returns a Set<String>.
* @param strings
* @return
*/
public static Set<String> getTrimmedStrings(Collection<String> strings) {
Set<String> trimmedStrings = new HashSet<String>();
for (String string: strings) {
trimmedStrings.add(string.trim());
}
return trimmedStrings;
}
final public static String[] emptyStringArray = {};
final public static char COMMA = ',';
final public static String COMMA_STR = ",";

3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
View File

@ -335,6 +335,9 @@ Release 2.6.0 - UNRELEASED
HDFS-6570. add api that enables checking if a user has certain permissions on
a file. (Jitendra Pandey via cnauroth)
HDFS-6441. Add ability to exclude/include specific datanodes while
balancing. (Benoy Antony and Yu Li via Arpit Agarwal)
OPTIMIZATIONS
HDFS-6690. Deduplicate xattr names in memory. (wang)

151
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java
View File

@ -45,6 +45,7 @@ import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
@ -83,6 +84,7 @@ import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.net.NetworkTopology;
import org.apache.hadoop.net.Node;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.util.HostsFileReader;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.Time;
import org.apache.hadoop.util.Tool;
@ -203,12 +205,20 @@ public class Balancer {
+ "\n\t[-policy <policy>]\tthe balancing policy: "
+ BalancingPolicy.Node.INSTANCE.getName() + " or "
+ BalancingPolicy.Pool.INSTANCE.getName()
+ "\n\t[-threshold <threshold>]\tPercentage of disk capacity";
+ "\n\t[-threshold <threshold>]\tPercentage of disk capacity"
+ "\n\t[-exclude [-f <hosts-file> | comma-sperated list of hosts]]"
+ "\tExcludes the specified datanodes."
+ "\n\t[-include [-f <hosts-file> | comma-sperated list of hosts]]"
+ "\tIncludes only the specified datanodes.";
private final NameNodeConnector nnc;
private final BalancingPolicy policy;
private final SaslDataTransferClient saslClient;
private final double threshold;
// set of data nodes to be excluded from balancing operations.
Set<String> nodesToBeExcluded;
//Restrict balancing to the following nodes.
Set<String> nodesToBeIncluded;
// all data node lists
private final Collection<Source> overUtilizedDatanodes
@ -869,6 +879,8 @@ public class Balancer {
Balancer(NameNodeConnector theblockpool, Parameters p, Configuration conf) {
this.threshold = p.threshold;
this.policy = p.policy;
this.nodesToBeExcluded = p.nodesToBeExcluded;
this.nodesToBeIncluded = p.nodesToBeIncluded;
this.nnc = theblockpool;
cluster = NetworkTopology.getInstance(conf);
@ -905,8 +917,13 @@ public class Balancer {
private long initNodes(DatanodeInfo[] datanodes) {
// compute average utilization
for (DatanodeInfo datanode : datanodes) {
if (datanode.isDecommissioned() || datanode.isDecommissionInProgress()) {
continue; // ignore decommissioning or decommissioned nodes
// ignore decommissioning or decommissioned nodes or
// ignore nodes in exclude list
// or nodes not in the include list (if include list is not empty)
if (datanode.isDecommissioned() || datanode.isDecommissionInProgress() ||
Util.shouldBeExcluded(nodesToBeExcluded, datanode) ||
!Util.shouldBeIncluded(nodesToBeIncluded, datanode)) {
continue;
}
policy.accumulateSpaces(datanode);
}
@ -919,8 +936,16 @@ public class Balancer {
*/
long overLoadedBytes = 0L, underLoadedBytes = 0L;
for (DatanodeInfo datanode : DFSUtil.shuffle(datanodes)) {
if (datanode.isDecommissioned() || datanode.isDecommissionInProgress()) {
continue; // ignore decommissioning or decommissioned nodes
// ignore decommissioning or decommissioned nodes or
// ignore nodes in exclude list
// or nodes not in the include list (if include list is not empty)
if (datanode.isDecommissioned() || datanode.isDecommissionInProgress() ||
Util.shouldBeExcluded(nodesToBeExcluded, datanode) ||
!Util.shouldBeIncluded(nodesToBeIncluded, datanode)) {
if (LOG.isTraceEnabled()) {
LOG.trace("Excluding datanode " + datanode);
}
continue;
}
cluster.add(datanode);
BalancerDatanode datanodeS;
@ -1526,21 +1551,101 @@ public class Balancer {
}
static class Parameters {
static final Parameters DEFALUT = new Parameters(
BalancingPolicy.Node.INSTANCE, 10.0);
static final Parameters DEFAULT = new Parameters(
BalancingPolicy.Node.INSTANCE, 10.0,
Collections.<String> emptySet(), Collections.<String> emptySet());
final BalancingPolicy policy;
final double threshold;
// exclude the nodes in this set from balancing operations
Set<String> nodesToBeExcluded;
//include only these nodes in balancing operations
Set<String> nodesToBeIncluded;
Parameters(BalancingPolicy policy, double threshold) {
Parameters(BalancingPolicy policy, double threshold,
Set<String> nodesToBeExcluded, Set<String> nodesToBeIncluded) {
this.policy = policy;
this.threshold = threshold;
this.nodesToBeExcluded = nodesToBeExcluded;
this.nodesToBeIncluded = nodesToBeIncluded;
}
@Override
public String toString() {
return Balancer.class.getSimpleName() + "." + getClass().getSimpleName()
+ "[" + policy + ", threshold=" + threshold + "]";
+ "[" + policy + ", threshold=" + threshold +
", number of nodes to be excluded = "+ nodesToBeExcluded.size() +
", number of nodes to be included = "+ nodesToBeIncluded.size() +"]";
}
}
static class Util {
/**
* @param datanode
* @return returns true if data node is part of the excludedNodes.
*/
static boolean shouldBeExcluded(Set<String> excludedNodes, DatanodeInfo datanode) {
return isIn(excludedNodes, datanode);
}
/**
* @param datanode
* @return returns true if includedNodes is empty or data node is part of the includedNodes.
*/
static boolean shouldBeIncluded(Set<String> includedNodes, DatanodeInfo datanode) {
return (includedNodes.isEmpty() ||
isIn(includedNodes, datanode));
}
/**
* Match is checked using host name , ip address with and without port number.
* @param datanodeSet
* @param datanode
* @return true if the datanode's transfer address matches the set of nodes.
*/
private static boolean isIn(Set<String> datanodeSet, DatanodeInfo datanode) {
return isIn(datanodeSet, datanode.getPeerHostName(), datanode.getXferPort()) ||
isIn(datanodeSet, datanode.getIpAddr(), datanode.getXferPort()) ||
isIn(datanodeSet, datanode.getHostName(), datanode.getXferPort());
}
/**
* returns true if nodes contains host or host:port
* @param nodes
* @param host
* @param port
* @return
*/
private static boolean isIn(Set<String> nodes, String host, int port) {
if (host == null) {
return false;
}
return (nodes.contains(host) || nodes.contains(host +":"+ port));
}
/**
* parse a comma separated string to obtain set of host names
* @param string
* @return
*/
static Set<String> parseHostList(String string) {
String[] addrs = StringUtils.getTrimmedStrings(string);
return new HashSet<String>(Arrays.asList(addrs));
}
/**
* read set of host names from a file
* @param fileName
* @return
*/
static Set<String> getHostListFromFile(String fileName) {
Set<String> nodes = new HashSet <String> ();
try {
HostsFileReader.readFileToSet("nodes", fileName, nodes);
return StringUtils.getTrimmedStrings(nodes);
} catch (IOException e) {
throw new IllegalArgumentException("Unable to open file: " + fileName);
}
}
}
@ -1578,8 +1683,10 @@ public class Balancer {
/** parse command line arguments */
static Parameters parse(String[] args) {
BalancingPolicy policy = Parameters.DEFALUT.policy;
double threshold = Parameters.DEFALUT.threshold;
BalancingPolicy policy = Parameters.DEFAULT.policy;
double threshold = Parameters.DEFAULT.threshold;
Set<String> nodesTobeExcluded = Parameters.DEFAULT.nodesToBeExcluded;
Set<String> nodesTobeIncluded = Parameters.DEFAULT.nodesToBeIncluded;
if (args != null) {
try {
@ -1608,18 +1715,38 @@ public class Balancer {
System.err.println("Illegal policy name: " + args[i]);
throw e;
}
} else if ("-exclude".equalsIgnoreCase(args[i])) {
i++;
if ("-f".equalsIgnoreCase(args[i])) {
nodesTobeExcluded = Util.getHostListFromFile(args[++i]);
} else {
nodesTobeExcluded = Util.parseHostList(args[i]);
}
} else if ("-include".equalsIgnoreCase(args[i])) {
i++;
if ("-f".equalsIgnoreCase(args[i])) {
nodesTobeIncluded = Util.getHostListFromFile(args[++i]);
} else {
nodesTobeIncluded = Util.parseHostList(args[i]);
}
} else {
throw new IllegalArgumentException("args = "
+ Arrays.toString(args));
}
}
if (!nodesTobeExcluded.isEmpty() && !nodesTobeIncluded.isEmpty()) {
System.err.println(
"-exclude and -include options cannot be specified together.");
throw new IllegalArgumentException(
"-exclude and -include options cannot be specified together.");
}
} catch(RuntimeException e) {
printUsage(System.err);
throw e;
}
}
return new Parameters(policy, threshold);
return new Parameters(policy, threshold, nodesTobeExcluded, nodesTobeIncluded);
}
private static void printUsage(PrintStream out) {

469
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancer.java
View File

@ -18,17 +18,23 @@
package org.apache.hadoop.hdfs.server.balancer;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URI;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Random;
import java.util.Set;
import java.util.concurrent.TimeoutException;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.impl.Log4JLogger;
@ -48,6 +54,8 @@ import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.protocol.HdfsConstants.DatanodeReportType;
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
import org.apache.hadoop.hdfs.server.balancer.Balancer.Cli;
import org.apache.hadoop.hdfs.server.balancer.Balancer.Parameters;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.SimulatedFSDataset;
import org.apache.hadoop.util.Time;
import org.apache.hadoop.util.Tool;
@ -255,6 +263,18 @@ public class TestBalancer {
}
}
}
/**
* Wait until balanced: each datanode gives utilization within
* BALANCE_ALLOWED_VARIANCE of average
* @throws IOException
* @throws TimeoutException
*/
static void waitForBalancer(long totalUsedSpace, long totalCapacity,
ClientProtocol client, MiniDFSCluster cluster, Balancer.Parameters p)
throws IOException, TimeoutException {
waitForBalancer(totalUsedSpace, totalCapacity, client, cluster, p, 0);
}
/**
* Wait until balanced: each datanode gives utilization within
@ -263,11 +283,17 @@ public class TestBalancer {
* @throws TimeoutException
*/
static void waitForBalancer(long totalUsedSpace, long totalCapacity,
ClientProtocol client, MiniDFSCluster cluster)
throws IOException, TimeoutException {
ClientProtocol client, MiniDFSCluster cluster, Balancer.Parameters p,
int expectedExcludedNodes) throws IOException, TimeoutException {
long timeout = TIMEOUT;
long failtime = (timeout <= 0L) ? Long.MAX_VALUE
: Time.now() + timeout;
if (!p.nodesToBeIncluded.isEmpty()) {
totalCapacity = p.nodesToBeIncluded.size() * CAPACITY;
}
if (!p.nodesToBeExcluded.isEmpty()) {
totalCapacity -= p.nodesToBeExcluded.size() * CAPACITY;
}
final double avgUtilization = ((double)totalUsedSpace) / totalCapacity;
boolean balanced;
do {
@ -275,9 +301,20 @@ public class TestBalancer {
client.getDatanodeReport(DatanodeReportType.ALL);
assertEquals(datanodeReport.length, cluster.getDataNodes().size());
balanced = true;
int actualExcludedNodeCount = 0;
for (DatanodeInfo datanode : datanodeReport) {
double nodeUtilization = ((double)datanode.getDfsUsed())
/ datanode.getCapacity();
if (Balancer.Util.shouldBeExcluded(p.nodesToBeExcluded, datanode)) {
assertTrue(nodeUtilization == 0);
actualExcludedNodeCount++;
continue;
}
if (!Balancer.Util.shouldBeIncluded(p.nodesToBeIncluded, datanode)) {
assertTrue(nodeUtilization == 0);
actualExcludedNodeCount++;
continue;
}
if (Math.abs(avgUtilization - nodeUtilization) > BALANCE_ALLOWED_VARIANCE) {
balanced = false;
if (Time.now() > failtime) {
@ -294,6 +331,7 @@ public class TestBalancer {
break;
}
}
assertEquals(expectedExcludedNodes,actualExcludedNodeCount);
} while (!balanced);
}
@ -307,22 +345,118 @@ public class TestBalancer {
}
return b.append("]").toString();
}
/** This test start a cluster with specified number of nodes,
/**
* Class which contains information about the
* new nodes to be added to the cluster for balancing.
*/
static abstract class NewNodeInfo {
Set<String> nodesToBeExcluded = new HashSet<String>();
Set<String> nodesToBeIncluded = new HashSet<String>();
abstract String[] getNames();
abstract int getNumberofNewNodes();
abstract int getNumberofIncludeNodes();
abstract int getNumberofExcludeNodes();
public Set<String> getNodesToBeIncluded() {
return nodesToBeIncluded;
}
public Set<String> getNodesToBeExcluded() {
return nodesToBeExcluded;
}
}
/**
* The host names of new nodes are specified
*/
static class HostNameBasedNodes extends NewNodeInfo {
String[] hostnames;
public HostNameBasedNodes(String[] hostnames,
Set<String> nodesToBeExcluded, Set<String> nodesToBeIncluded) {
this.hostnames = hostnames;
this.nodesToBeExcluded = nodesToBeExcluded;
this.nodesToBeIncluded = nodesToBeIncluded;
}
@Override
String[] getNames() {
return hostnames;
}
@Override
int getNumberofNewNodes() {
return hostnames.length;
}
@Override
int getNumberofIncludeNodes() {
return nodesToBeIncluded.size();
}
@Override
int getNumberofExcludeNodes() {
return nodesToBeExcluded.size();
}
}
/**
* The number of data nodes to be started are specified.
* The data nodes will have same host name, but different port numbers.
*
*/
static class PortNumberBasedNodes extends NewNodeInfo {
int newNodes;
int excludeNodes;
int includeNodes;
public PortNumberBasedNodes(int newNodes, int excludeNodes, int includeNodes) {
this.newNodes = newNodes;
this.excludeNodes = excludeNodes;
this.includeNodes = includeNodes;
}
@Override
String[] getNames() {
return null;
}
@Override
int getNumberofNewNodes() {
return newNodes;
}
@Override
int getNumberofIncludeNodes() {
return includeNodes;
}
@Override
int getNumberofExcludeNodes() {
return excludeNodes;
}
}
private void doTest(Configuration conf, long[] capacities, String[] racks,
long newCapacity, String newRack, boolean useTool) throws Exception {
doTest(conf, capacities, racks, newCapacity, newRack, null, useTool, false);
}
/** This test start a cluster with specified number of nodes,
* and fills it to be 30% full (with a single file replicated identically
* to all datanodes);
* It then adds one new empty node and starts balancing.
*
*
* @param conf - configuration
* @param capacities - array of capacities of original nodes in cluster
* @param racks - array of racks for original nodes in cluster
* @param newCapacity - new node's capacity
* @param newRack - new node's rack
* @param nodes - information about new nodes to be started.
* @param useTool - if true run test via Cli with command-line argument
* parsing, etc. Otherwise invoke balancer API directly.
* @param useFile - if true, the hosts to included or excluded will be stored in a
* file and then later read from the file.
* @throws Exception
*/
private void doTest(Configuration conf, long[] capacities, String[] racks,
long newCapacity, String newRack, boolean useTool) throws Exception {
private void doTest(Configuration conf, long[] capacities,
String[] racks, long newCapacity, String newRack, NewNodeInfo nodes,
boolean useTool, boolean useFile) throws Exception {
LOG.info("capacities = " + long2String(capacities));
LOG.info("racks = " + Arrays.asList(racks));
LOG.info("newCapacity= " + newCapacity);
@ -346,17 +480,75 @@ public class TestBalancer {
long totalUsedSpace = totalCapacity*3/10;
createFile(cluster, filePath, totalUsedSpace / numOfDatanodes,
(short) numOfDatanodes, 0);
// start up an empty node with the same capacity and on the same rack
cluster.startDataNodes(conf, 1, true, null,
new String[]{newRack}, new long[]{newCapacity});
totalCapacity += newCapacity;
if (nodes == null) { // there is no specification of new nodes.
// start up an empty node with the same capacity and on the same rack
cluster.startDataNodes(conf, 1, true, null,
new String[]{newRack}, null,new long[]{newCapacity});
totalCapacity += newCapacity;
} else {
//if running a test with "include list", include original nodes as well
if (nodes.getNumberofIncludeNodes()>0) {
for (DataNode dn: cluster.getDataNodes())
nodes.getNodesToBeIncluded().add(dn.getDatanodeId().getHostName());
}
String[] newRacks = new String[nodes.getNumberofNewNodes()];
long[] newCapacities = new long[nodes.getNumberofNewNodes()];
for (int i=0; i < nodes.getNumberofNewNodes(); i++) {
newRacks[i] = newRack;
newCapacities[i] = newCapacity;
}
// if host names are specified for the new nodes to be created.
if (nodes.getNames() != null) {
cluster.startDataNodes(conf, nodes.getNumberofNewNodes(), true, null,
newRacks, nodes.getNames(), newCapacities);
totalCapacity += newCapacity*nodes.getNumberofNewNodes();
} else { // host names are not specified
cluster.startDataNodes(conf, nodes.getNumberofNewNodes(), true, null,
newRacks, null, newCapacities);
totalCapacity += newCapacity*nodes.getNumberofNewNodes();
//populate the include nodes
if (nodes.getNumberofIncludeNodes() > 0) {
int totalNodes = cluster.getDataNodes().size();
for (int i=0; i < nodes.getNumberofIncludeNodes(); i++) {
nodes.getNodesToBeIncluded().add (cluster.getDataNodes().get(
totalNodes-1-i).getDatanodeId().getXferAddr());
}
}
//polulate the exclude nodes
if (nodes.getNumberofExcludeNodes() > 0) {
int totalNodes = cluster.getDataNodes().size();
for (int i=0; i < nodes.getNumberofExcludeNodes(); i++) {
nodes.getNodesToBeExcluded().add (cluster.getDataNodes().get(
totalNodes-1-i).getDatanodeId().getXferAddr());
}
}
}
}
// run balancer and validate results
Balancer.Parameters p = Balancer.Parameters.DEFAULT;
if (nodes != null) {
p = new Balancer.Parameters(
Balancer.Parameters.DEFAULT.policy,
Balancer.Parameters.DEFAULT.threshold,
nodes.getNodesToBeExcluded(), nodes.getNodesToBeIncluded());
}
int expectedExcludedNodes = 0;
if (nodes != null) {
if (!nodes.getNodesToBeExcluded().isEmpty()) {
expectedExcludedNodes = nodes.getNodesToBeExcluded().size();
} else if (!nodes.getNodesToBeIncluded().isEmpty()) {
expectedExcludedNodes =
cluster.getDataNodes().size() - nodes.getNodesToBeIncluded().size();
}
}
// run balancer and validate results
if (useTool) {
runBalancerCli(conf, totalUsedSpace, totalCapacity);
runBalancerCli(conf, totalUsedSpace, totalCapacity, p, useFile, expectedExcludedNodes);
} else {
runBalancer(conf, totalUsedSpace, totalCapacity);
runBalancer(conf, totalUsedSpace, totalCapacity, p, expectedExcludedNodes);
}
} finally {
cluster.shutdown();
@ -365,11 +557,17 @@ public class TestBalancer {
private void runBalancer(Configuration conf,
long totalUsedSpace, long totalCapacity) throws Exception {
runBalancer(conf, totalUsedSpace, totalCapacity, Balancer.Parameters.DEFAULT, 0);
}
private void runBalancer(Configuration conf,
long totalUsedSpace, long totalCapacity, Balancer.Parameters p,
int excludedNodes) throws Exception {
waitForHeartBeat(totalUsedSpace, totalCapacity, client, cluster);
// start rebalancing
Collection<URI> namenodes = DFSUtil.getNsServiceRpcUris(conf);
final int r = Balancer.run(namenodes, Balancer.Parameters.DEFALUT, conf);
final int r = Balancer.run(namenodes, p, conf);
if (conf.getInt(DFSConfigKeys.DFS_DATANODE_BALANCE_MAX_NUM_CONCURRENT_MOVES_KEY,
DFSConfigKeys.DFS_DATANODE_BALANCE_MAX_NUM_CONCURRENT_MOVES_DEFAULT) ==0) {
assertEquals(Balancer.ReturnStatus.NO_MOVE_PROGRESS.code, r);
@ -379,22 +577,66 @@ public class TestBalancer {
}
waitForHeartBeat(totalUsedSpace, totalCapacity, client, cluster);
LOG.info("Rebalancing with default ctor.");
waitForBalancer(totalUsedSpace, totalCapacity, client, cluster);
waitForBalancer(totalUsedSpace, totalCapacity, client, cluster, p, excludedNodes);
}
private void runBalancerCli(Configuration conf,
long totalUsedSpace, long totalCapacity) throws Exception {
waitForHeartBeat(totalUsedSpace, totalCapacity, client, cluster);
final String[] args = { "-policy", "datanode" };
private void runBalancerCli(Configuration conf,
long totalUsedSpace, long totalCapacity,
Balancer.Parameters p, boolean useFile, int expectedExcludedNodes) throws Exception {
waitForHeartBeat(totalUsedSpace, totalCapacity, client, cluster);
List <String> args = new ArrayList<String>();
args.add("-policy");
args.add("datanode");
File excludeHostsFile = null;
if (!p.nodesToBeExcluded.isEmpty()) {
args.add("-exclude");
if (useFile) {
excludeHostsFile = new File ("exclude-hosts-file");
PrintWriter pw = new PrintWriter(excludeHostsFile);
for (String host: p.nodesToBeExcluded) {
pw.write( host + "\n");
}
pw.close();
args.add("-f");
args.add("exclude-hosts-file");
} else {
args.add(StringUtils.join(p.nodesToBeExcluded, ','));
}
}
File includeHostsFile = null;
if (!p.nodesToBeIncluded.isEmpty()) {
args.add("-include");
if (useFile) {
includeHostsFile = new File ("include-hosts-file");
PrintWriter pw = new PrintWriter(includeHostsFile);
for (String host: p.nodesToBeIncluded){
pw.write( host + "\n");
}
pw.close();
args.add("-f");
args.add("include-hosts-file");
} else {
args.add(StringUtils.join(p.nodesToBeIncluded, ','));
}
}
final Tool tool = new Cli();
tool.setConf(conf);
final int r = tool.run(args); // start rebalancing
final int r = tool.run(args.toArray(new String[0])); // start rebalancing
assertEquals("Tools should exit 0 on success", 0, r);
waitForHeartBeat(totalUsedSpace, totalCapacity, client, cluster);
LOG.info("Rebalancing with default ctor.");
waitForBalancer(totalUsedSpace, totalCapacity, client, cluster);
waitForBalancer(totalUsedSpace, totalCapacity, client, cluster, p, expectedExcludedNodes);
if (excludeHostsFile != null && excludeHostsFile.exists()) {
excludeHostsFile.delete();
}
if (includeHostsFile != null && includeHostsFile.exists()) {
includeHostsFile.delete();
}
}
/** one-node cluster test*/
@ -440,7 +682,7 @@ public class TestBalancer {
}
}
/** Test a cluster with even distribution,
/** Test a cluster with even distribution,
* then a new empty node is added to the cluster*/
@Test(timeout=100000)
public void testBalancer0() throws Exception {
@ -554,7 +796,13 @@ public class TestBalancer {
} catch (IllegalArgumentException e) {
}
parameters = new String[] {"-include", "testnode1", "-exclude", "testnode2"};
try {
Balancer.Cli.parse(parameters);
fail("IllegalArgumentException is expected when both -exclude and -include are specified");
} catch (IllegalArgumentException e) {
}
}
/**
@ -569,6 +817,183 @@ public class TestBalancer {
oneNodeTest(conf, true);
}
/**
* Test a cluster with even distribution,
* then three nodes are added to the cluster,
* runs balancer with two of the nodes in the exclude list
*/
@Test(timeout=100000)
public void testBalancerWithExcludeList() throws Exception {
final Configuration conf = new HdfsConfiguration();
initConf(conf);
Set<String> excludeHosts = new HashSet<String>();
excludeHosts.add( "datanodeY");
excludeHosts.add( "datanodeZ");
doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1}, CAPACITY, RACK2,
new HostNameBasedNodes(new String[] {"datanodeX", "datanodeY", "datanodeZ"},
excludeHosts, Parameters.DEFAULT.nodesToBeIncluded), false, false);
}
/**
* Test a cluster with even distribution,
* then three nodes are added to the cluster,
* runs balancer with two of the nodes in the exclude list
*/
@Test(timeout=100000)
public void testBalancerWithExcludeListWithPorts() throws Exception {
final Configuration conf = new HdfsConfiguration();
initConf(conf);
doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1},
CAPACITY, RACK2, new PortNumberBasedNodes(3, 2, 0), false, false);
}
/**
* Test a cluster with even distribution,
* then three nodes are added to the cluster,
* runs balancer with two of the nodes in the exclude list
*/
@Test(timeout=100000)
public void testBalancerCliWithExcludeList() throws Exception {
final Configuration conf = new HdfsConfiguration();
initConf(conf);
Set<String> excludeHosts = new HashSet<String>();
excludeHosts.add( "datanodeY");
excludeHosts.add( "datanodeZ");
doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1}, CAPACITY, RACK2,
new HostNameBasedNodes(new String[] {"datanodeX", "datanodeY", "datanodeZ"}, excludeHosts,
Parameters.DEFAULT.nodesToBeIncluded), true, false);
}
/**
* Test a cluster with even distribution,
* then three nodes are added to the cluster,
* runs balancer with two of the nodes in the exclude list
*/
@Test(timeout=100000)
public void testBalancerCliWithExcludeListWithPorts() throws Exception {
final Configuration conf = new HdfsConfiguration();
initConf(conf);
doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1},
CAPACITY, RACK2, new PortNumberBasedNodes(3, 2, 0), true, false);
}
/**
* Test a cluster with even distribution,
* then three nodes are added to the cluster,
* runs balancer with two of the nodes in the exclude list in a file
*/
@Test(timeout=100000)
public void testBalancerCliWithExcludeListInAFile() throws Exception {
final Configuration conf = new HdfsConfiguration();
initConf(conf);
Set<String> excludeHosts = new HashSet<String>();
excludeHosts.add( "datanodeY");
excludeHosts.add( "datanodeZ");
doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1}, CAPACITY, RACK2,
new HostNameBasedNodes(new String[] {"datanodeX", "datanodeY", "datanodeZ"},
excludeHosts, Parameters.DEFAULT.nodesToBeIncluded), true, true);
}
/**
* Test a cluster with even distribution,G
* then three nodes are added to the cluster,
* runs balancer with two of the nodes in the exclude list
*/
@Test(timeout=100000)
public void testBalancerCliWithExcludeListWithPortsInAFile() throws Exception {
final Configuration conf = new HdfsConfiguration();
initConf(conf);
doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1},
CAPACITY, RACK2, new PortNumberBasedNodes(3, 2, 0), true, true);
}
/**
* Test a cluster with even distribution,
* then three nodes are added to the cluster,
* runs balancer with two of the nodes in the include list
*/
@Test(timeout=100000)
public void testBalancerWithIncludeList() throws Exception {
final Configuration conf = new HdfsConfiguration();
initConf(conf);
Set<String> includeHosts = new HashSet<String>();
includeHosts.add( "datanodeY");
doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1}, CAPACITY, RACK2,
new HostNameBasedNodes(new String[] {"datanodeX", "datanodeY", "datanodeZ"},
Parameters.DEFAULT.nodesToBeExcluded, includeHosts), false, false);
}
/**
* Test a cluster with even distribution,
* then three nodes are added to the cluster,
* runs balancer with two of the nodes in the include list
*/
@Test(timeout=100000)
public void testBalancerWithIncludeListWithPorts() throws Exception {
final Configuration conf = new HdfsConfiguration();
initConf(conf);
doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1},
CAPACITY, RACK2, new PortNumberBasedNodes(3, 0, 1), false, false);
}
/**
* Test a cluster with even distribution,
* then three nodes are added to the cluster,
* runs balancer with two of the nodes in the include list
*/
@Test(timeout=100000)
public void testBalancerCliWithIncludeList() throws Exception {
final Configuration conf = new HdfsConfiguration();
initConf(conf);
Set<String> includeHosts = new HashSet<String>();
includeHosts.add( "datanodeY");
doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1}, CAPACITY, RACK2,
new HostNameBasedNodes(new String[] {"datanodeX", "datanodeY", "datanodeZ"},
Parameters.DEFAULT.nodesToBeExcluded, includeHosts), true, false);
}
/**
* Test a cluster with even distribution,
* then three nodes are added to the cluster,
* runs balancer with two of the nodes in the include list
*/
@Test(timeout=100000)
public void testBalancerCliWithIncludeListWithPorts() throws Exception {
final Configuration conf = new HdfsConfiguration();
initConf(conf);
doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1},
CAPACITY, RACK2, new PortNumberBasedNodes(3, 0, 1), true, false);
}
/**
* Test a cluster with even distribution,
* then three nodes are added to the cluster,
* runs balancer with two of the nodes in the include list
*/
@Test(timeout=100000)
public void testBalancerCliWithIncludeListInAFile() throws Exception {
final Configuration conf = new HdfsConfiguration();
initConf(conf);
Set<String> includeHosts = new HashSet<String>();
includeHosts.add( "datanodeY");
doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1}, CAPACITY, RACK2,
new HostNameBasedNodes(new String[] {"datanodeX", "datanodeY", "datanodeZ"},
Parameters.DEFAULT.nodesToBeExcluded, includeHosts), true, true);
}
/**
* Test a cluster with even distribution,
* then three nodes are added to the cluster,
* runs balancer with two of the nodes in the include list
*/
@Test(timeout=100000)
public void testBalancerCliWithIncludeListWithPortsInAFile() throws Exception {
final Configuration conf = new HdfsConfiguration();
initConf(conf);
doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1},
CAPACITY, RACK2, new PortNumberBasedNodes(3, 0, 1), true, true);
}
/**
* @param args
*/

4
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancerWithHANameNodes.java
View File

@ -97,10 +97,10 @@ public class TestBalancerWithHANameNodes {
Collection<URI> namenodes = DFSUtil.getNsServiceRpcUris(conf);
assertEquals(1, namenodes.size());
assertTrue(namenodes.contains(HATestUtil.getLogicalUri(cluster)));
final int r = Balancer.run(namenodes, Balancer.Parameters.DEFALUT, conf);
final int r = Balancer.run(namenodes, Balancer.Parameters.DEFAULT, conf);
assertEquals(Balancer.ReturnStatus.SUCCESS.code, r);
TestBalancer.waitForBalancer(totalUsedSpace, totalCapacity, client,
cluster);
cluster, Balancer.Parameters.DEFAULT);
} finally {
cluster.shutdown();
}

4
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancerWithMultipleNameNodes.java
View File

@ -159,7 +159,7 @@ public class TestBalancerWithMultipleNameNodes {
// start rebalancing
final Collection<URI> namenodes = DFSUtil.getNsServiceRpcUris(s.conf);
final int r = Balancer.run(namenodes, Balancer.Parameters.DEFALUT, s.conf);
final int r = Balancer.run(namenodes, Balancer.Parameters.DEFAULT, s.conf);
Assert.assertEquals(Balancer.ReturnStatus.SUCCESS.code, r);
LOG.info("BALANCER 2");
@ -195,7 +195,7 @@ public class TestBalancerWithMultipleNameNodes {
balanced = true;
for(int d = 0; d < used.length; d++) {
final double p = used[d]*100.0/cap[d];
balanced = p <= avg + Balancer.Parameters.DEFALUT.threshold;
balanced = p <= avg + Balancer.Parameters.DEFAULT.threshold;
if (!balanced) {
if (i % 100 == 0) {
LOG.warn("datanodes " + d + " is not yet balanced: "

4
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancerWithNodeGroup.java
View File

@ -175,7 +175,7 @@ public class TestBalancerWithNodeGroup {
// start rebalancing
Collection<URI> namenodes = DFSUtil.getNsServiceRpcUris(conf);
final int r = Balancer.run(namenodes, Balancer.Parameters.DEFALUT, conf);
final int r = Balancer.run(namenodes, Balancer.Parameters.DEFAULT, conf);
assertEquals(Balancer.ReturnStatus.SUCCESS.code, r);
waitForHeartBeat(totalUsedSpace, totalCapacity);
@ -189,7 +189,7 @@ public class TestBalancerWithNodeGroup {
// start rebalancing
Collection<URI> namenodes = DFSUtil.getNsServiceRpcUris(conf);
final int r = Balancer.run(namenodes, Balancer.Parameters.DEFALUT, conf);
final int r = Balancer.run(namenodes, Balancer.Parameters.DEFAULT, conf);
Assert.assertTrue(r == Balancer.ReturnStatus.SUCCESS.code ||
(r == Balancer.ReturnStatus.NO_MOVE_PROGRESS.code));
waitForHeartBeat(totalUsedSpace, totalCapacity);