HDFS-17642. Add target node list, exclude source node list, and exclude target node list parameters to balancer (#7127)
HDFS-17642. Add target node list, exclude source node list, and exclude target node list parameters to balancer (#7127) --------- Co-authored-by: Joseph DellAringa <jdellari@linkedin.com>
This commit is contained in:
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487727a5d1
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9657276492
@ -195,6 +195,12 @@ public class Balancer {
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+ "\tIncludes only the specified datanodes."
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+ "\n\t[-source [-f <hosts-file> | <comma-separated list of hosts>]]"
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+ "\tPick only the specified datanodes as source nodes."
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+ "\n\t[-excludeSource [-f <hosts-file> | <comma-separated list of hosts>]]"
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+ "\tExcludes the specified datanodes to be selected as a source."
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+ "\n\t[-target [-f <hosts-file> | <comma-separated list of hosts>]]"
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+ "\tPick only the specified datanodes as target nodes."
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+ "\n\t[-excludeTarget [-f <hosts-file> | <comma-separated list of hosts>]]"
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+ "\tExcludes the specified datanodes from being selected as a target."
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+ "\n\t[-blockpools <comma-separated list of blockpool ids>]"
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+ "\tThe balancer will only run on blockpools included in this list."
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+ "\n\t[-idleiterations <idleiterations>]"
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@ -224,6 +230,9 @@ public class Balancer {
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private final NameNodeConnector nnc;
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private final BalancingPolicy policy;
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private final Set<String> sourceNodes;
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private final Set<String> excludedSourceNodes;
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private final Set<String> targetNodes;
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private final Set<String> excludedTargetNodes;
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private final boolean runDuringUpgrade;
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private final double threshold;
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private final long maxSizeToMove;
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@ -353,6 +362,9 @@ static int getFailedTimesSinceLastSuccessfulBalance() {
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this.threshold = p.getThreshold();
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this.policy = p.getBalancingPolicy();
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this.sourceNodes = p.getSourceNodes();
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this.excludedSourceNodes = p.getExcludedSourceNodes();
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this.targetNodes = p.getTargetNodes();
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this.excludedTargetNodes = p.getExcludedTargetNodes();
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this.runDuringUpgrade = p.getRunDuringUpgrade();
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this.sortTopNodes = p.getSortTopNodes();
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this.limitOverUtilizedNum = p.getLimitOverUtilizedNum();
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@ -411,7 +423,10 @@ private long init(List<DatanodeStorageReport> reports) {
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long overLoadedBytes = 0L, underLoadedBytes = 0L;
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for(DatanodeStorageReport r : reports) {
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final DDatanode dn = dispatcher.newDatanode(r.getDatanodeInfo());
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final boolean isSource = Util.isIncluded(sourceNodes, dn.getDatanodeInfo());
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final boolean isValidSource = Util.isIncluded(sourceNodes, dn.getDatanodeInfo()) &&
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!Util.isExcluded(excludedSourceNodes, dn.getDatanodeInfo());
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final boolean isValidTarget = Util.isIncluded(targetNodes, dn.getDatanodeInfo()) &&
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!Util.isExcluded(excludedTargetNodes, dn.getDatanodeInfo());
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for(StorageType t : StorageType.getMovableTypes()) {
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final Double utilization = policy.getUtilization(r, t);
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if (utilization == null) { // datanode does not have such storage type
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@ -419,10 +434,15 @@ private long init(List<DatanodeStorageReport> reports) {
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}
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final double average = policy.getAvgUtilization(t);
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if (utilization >= average && !isSource) {
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LOG.info(dn + "[" + t + "] has utilization=" + utilization
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+ " >= average=" + average
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+ " but it is not specified as a source; skipping it.");
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if (utilization >= average && !isValidSource) {
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LOG.info("{} [{}] utilization {} >= average {}, but it's either not specified"
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+ " or excluded as a source; skipping.", dn, t, utilization, average);
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continue;
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}
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if (utilization <= average && !isValidTarget) {
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LOG.info("{} [{}] utilization {} <= average {}, but it's either not specified"
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+ " or excluded as a target; skipping.",
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dn, t, utilization, average);
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continue;
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}
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@ -829,6 +849,9 @@ static private int doBalance(Collection<URI> namenodes,
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LOG.info("included nodes = " + p.getIncludedNodes());
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LOG.info("excluded nodes = " + p.getExcludedNodes());
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LOG.info("source nodes = " + p.getSourceNodes());
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LOG.info("excluded source nodes = " + p.getExcludedSourceNodes());
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LOG.info("target nodes = " + p.getTargetNodes());
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LOG.info("excluded target nodes = " + p.getExcludedTargetNodes());
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checkKeytabAndInit(conf);
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System.out.println("Time Stamp Iteration#"
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+ " Bytes Already Moved Bytes Left To Move Bytes Being Moved"
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@ -1016,6 +1039,10 @@ public int run(String[] args) {
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static BalancerParameters parse(String[] args) {
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Set<String> excludedNodes = null;
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Set<String> includedNodes = null;
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Set<String> sourceNodes = null;
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Set<String> excludedSourceNodes = null;
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Set<String> targetNodes = null;
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Set<String> excludedTargetNodes = null;
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BalancerParameters.Builder b = new BalancerParameters.Builder();
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if (args != null) {
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@ -1056,9 +1083,21 @@ static BalancerParameters parse(String[] args) {
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i = processHostList(args, i, "include", includedNodes);
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b.setIncludedNodes(includedNodes);
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} else if ("-source".equalsIgnoreCase(args[i])) {
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Set<String> sourceNodes = new HashSet<>();
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sourceNodes = new HashSet<>();
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i = processHostList(args, i, "source", sourceNodes);
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b.setSourceNodes(sourceNodes);
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} else if ("-excludeSource".equalsIgnoreCase(args[i])) {
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excludedSourceNodes = new HashSet<>();
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i = processHostList(args, i, "exclude source", excludedSourceNodes);
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b.setExcludedSourceNodes(excludedSourceNodes);
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} else if ("-target".equalsIgnoreCase(args[i])) {
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targetNodes = new HashSet<>();
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i = processHostList(args, i, "target", targetNodes);
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b.setTargetNodes(targetNodes);
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} else if ("-excludeTarget".equalsIgnoreCase(args[i])) {
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excludedTargetNodes = new HashSet<>();
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i = processHostList(args, i, "exclude target", excludedTargetNodes);
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b.setExcludedTargetNodes(excludedTargetNodes);
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} else if ("-blockpools".equalsIgnoreCase(args[i])) {
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Preconditions.checkArgument(
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++i < args.length,
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@ -1111,6 +1150,10 @@ static BalancerParameters parse(String[] args) {
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}
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Preconditions.checkArgument(excludedNodes == null || includedNodes == null,
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"-exclude and -include options cannot be specified together.");
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Preconditions.checkArgument(excludedSourceNodes == null || sourceNodes == null,
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"-excludeSource and -source options cannot be specified together.");
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Preconditions.checkArgument(excludedTargetNodes == null || targetNodes == null,
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"-excludeTarget and -target options cannot be specified together.");
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} catch(RuntimeException e) {
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printUsage(System.err);
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throw e;
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@ -37,6 +37,21 @@ final class BalancerParameters {
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* source nodes.
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*/
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private final Set<String> sourceNodes;
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/**
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* If empty, any node can be a source; otherwise, these nodes will be excluded as
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* source nodes.
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*/
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private final Set<String> excludedSourceNodes;
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/**
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* If empty, any node can be a target; otherwise, use only these nodes as
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* target nodes.
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*/
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private final Set<String> targetNodes;
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/**
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* If empty, any node can be a target; otherwise, these nodes will be excluded as
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* target nodes.
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*/
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private final Set<String> excludedTargetNodes;
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/**
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* A set of block pools to run the balancer on.
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*/
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@ -65,6 +80,9 @@ private BalancerParameters(Builder builder) {
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this.excludedNodes = builder.excludedNodes;
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this.includedNodes = builder.includedNodes;
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this.sourceNodes = builder.sourceNodes;
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this.excludedSourceNodes = builder.excludedSourceNodes;
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this.targetNodes = builder.targetNodes;
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this.excludedTargetNodes = builder.excludedTargetNodes;
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this.blockpools = builder.blockpools;
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this.runDuringUpgrade = builder.runDuringUpgrade;
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this.runAsService = builder.runAsService;
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@ -97,6 +115,18 @@ Set<String> getSourceNodes() {
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return this.sourceNodes;
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}
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Set<String> getExcludedSourceNodes() {
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return this.excludedSourceNodes;
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}
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Set<String> getTargetNodes() {
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return this.targetNodes;
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}
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Set<String> getExcludedTargetNodes() {
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return this.excludedTargetNodes;
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}
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Set<String> getBlockPools() {
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return this.blockpools;
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}
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@ -126,12 +156,15 @@ public String toString() {
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return String.format("%s.%s [%s," + " threshold = %s,"
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+ " max idle iteration = %s," + " #excluded nodes = %s,"
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+ " #included nodes = %s," + " #source nodes = %s,"
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+ " #excluded source nodes = %s," + " #target nodes = %s,"
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+ " #excluded target nodes = %s,"
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+ " #blockpools = %s," + " run during upgrade = %s,"
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+ " sort top nodes = %s," + " limit overUtilized nodes num = %s,"
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+ " hot block time interval = %s]",
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Balancer.class.getSimpleName(), getClass().getSimpleName(), policy,
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threshold, maxIdleIteration, excludedNodes.size(),
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includedNodes.size(), sourceNodes.size(), blockpools.size(),
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includedNodes.size(), sourceNodes.size(), excludedSourceNodes.size(), targetNodes.size(),
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excludedTargetNodes.size(), blockpools.size(),
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runDuringUpgrade, sortTopNodes, limitOverUtilizedNum, hotBlockTimeInterval);
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}
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@ -144,6 +177,9 @@ static class Builder {
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private Set<String> excludedNodes = Collections.<String> emptySet();
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private Set<String> includedNodes = Collections.<String> emptySet();
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private Set<String> sourceNodes = Collections.<String> emptySet();
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private Set<String> excludedSourceNodes = Collections.<String> emptySet();
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private Set<String> targetNodes = Collections.<String> emptySet();
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private Set<String> excludedTargetNodes = Collections.<String> emptySet();
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private Set<String> blockpools = Collections.<String> emptySet();
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private boolean runDuringUpgrade = false;
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private boolean runAsService = false;
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@ -189,6 +225,21 @@ Builder setSourceNodes(Set<String> nodes) {
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return this;
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}
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Builder setExcludedSourceNodes(Set<String> nodes) {
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this.excludedSourceNodes = nodes;
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return this;
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}
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Builder setTargetNodes(Set<String> nodes) {
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this.targetNodes = nodes;
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return this;
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}
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Builder setExcludedTargetNodes(Set<String> nodes) {
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this.excludedTargetNodes = nodes;
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return this;
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}
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Builder setBlockpools(Set<String> pools) {
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this.blockpools = pools;
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return this;
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@ -47,6 +47,7 @@
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import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertTrue;
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import static org.junit.Assert.fail;
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import static org.junit.Assert.assertThrows;
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import static org.mockito.Mockito.any;
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import static org.mockito.Mockito.anyLong;
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import static org.mockito.Mockito.doAnswer;
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@ -473,7 +474,8 @@ static void waitForBalancer(long totalUsedSpace, long totalCapacity,
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static void waitForBalancer(long totalUsedSpace, long totalCapacity,
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ClientProtocol client, MiniDFSCluster cluster, BalancerParameters p,
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int expectedExcludedNodes) throws IOException, TimeoutException {
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waitForBalancer(totalUsedSpace, totalCapacity, client, cluster, p, expectedExcludedNodes, true);
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waitForBalancer(totalUsedSpace, totalCapacity, client,
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cluster, p, expectedExcludedNodes, true);
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}
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/**
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@ -495,6 +497,9 @@ static void waitForBalancer(long totalUsedSpace, long totalCapacity,
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if (!p.getExcludedNodes().isEmpty()) {
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totalCapacity -= p.getExcludedNodes().size() * CAPACITY;
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}
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if (!p.getExcludedTargetNodes().isEmpty()) {
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totalCapacity -= p.getExcludedTargetNodes().size() * CAPACITY;
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}
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final double avgUtilization = ((double)totalUsedSpace) / totalCapacity;
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boolean balanced;
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do {
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@ -539,6 +544,69 @@ static void waitForBalancer(long totalUsedSpace, long totalCapacity,
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} while (!balanced);
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}
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/**
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* Wait until balanced: each datanode gives utilization within.
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* Used when testing for included / excluded target and source nodes.
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* BALANCE_ALLOWED_VARIANCE of average
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* @throws IOException
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* @throws TimeoutException
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*/
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static void waitForBalancer(long totalUsedSpace, long totalCapacity,
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ClientProtocol client, MiniDFSCluster cluster, BalancerParameters p,
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int expectedExcludedSourceNodes, int expectedExcludedTargetNodes)
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throws IOException, TimeoutException {
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long timeout = TIMEOUT;
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long failtime = (timeout <= 0L) ? Long.MAX_VALUE
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: Time.monotonicNow() + timeout;
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if (!p.getExcludedTargetNodes().isEmpty()) {
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totalCapacity -= p.getExcludedTargetNodes().size() * CAPACITY;
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}
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final double avgUtilization = ((double)totalUsedSpace) / totalCapacity;
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boolean balanced;
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do {
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DatanodeInfo[] datanodeReport =
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client.getDatanodeReport(DatanodeReportType.ALL);
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assertEquals(datanodeReport.length, cluster.getDataNodes().size());
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balanced = true;
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int actualExcludedSourceNodeCount = 0;
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int actualExcludedTargetNodeCount = 0;
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for (DatanodeInfo datanode : datanodeReport) {
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double nodeUtilization =
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((double) datanode.getDfsUsed() + datanode.getNonDfsUsed()) /
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datanode.getCapacity();
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if(Dispatcher.Util.isExcluded(p.getExcludedTargetNodes(), datanode)) {
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actualExcludedTargetNodeCount++;
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}
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if(!Dispatcher.Util.isIncluded(p.getTargetNodes(), datanode)) {
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actualExcludedTargetNodeCount++;
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}
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if(Dispatcher.Util.isExcluded(p.getExcludedSourceNodes(), datanode)) {
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actualExcludedSourceNodeCount++;
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}
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if(!Dispatcher.Util.isIncluded(p.getSourceNodes(), datanode)) {
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actualExcludedSourceNodeCount++;
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}
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if (Math.abs(avgUtilization - nodeUtilization) > BALANCE_ALLOWED_VARIANCE) {
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balanced = false;
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if (Time.monotonicNow() > failtime) {
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throw new TimeoutException(
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"Rebalancing expected avg utilization to become "
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+ avgUtilization + ", but on datanode " + datanode
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+ " it remains at " + nodeUtilization
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+ " after more than " + TIMEOUT + " msec.");
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}
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try {
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Thread.sleep(100);
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} catch (InterruptedException ignored) {
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}
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break;
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}
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}
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assertEquals(expectedExcludedSourceNodes, actualExcludedSourceNodeCount);
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assertEquals(expectedExcludedTargetNodes, actualExcludedTargetNodeCount);
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} while (!balanced);
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}
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String long2String(long[] array) {
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if (array.length == 0) {
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return "<empty>";
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@ -636,6 +704,14 @@ int getNumberofExcludeNodes() {
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}
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}
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private void doTest(Configuration conf,
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long newCapacity, String newRack, NewNodeInfo nodes,
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boolean useTool, boolean useFile, BalancerParameters p) throws Exception {
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doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1},
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newCapacity, 0L, newRack, nodes,
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useTool, useFile, false, 0.3, p);
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}
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private void doTest(Configuration conf, long[] capacities, String[] racks,
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long newCapacity, String newRack, boolean useTool) throws Exception {
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doTest(conf, capacities, racks, newCapacity, newRack, null, useTool, false);
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@ -645,7 +721,7 @@ private void doTest(Configuration conf, long[] capacities, String[] racks,
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long newCapacity, String newRack, NewNodeInfo nodes,
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boolean useTool, boolean useFile) throws Exception {
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doTest(conf, capacities, racks, newCapacity, 0L, newRack, nodes,
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useTool, useFile, false, 0.3);
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useTool, useFile, false, 0.3, null);
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}
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/** This test start a cluster with specified number of nodes,
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@ -671,7 +747,7 @@ private void doTest(Configuration conf, long[] capacities, String[] racks,
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private void doTest(Configuration conf, long[] capacities,
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String[] racks, long newCapacity, long newNonDfsUsed, String newRack,
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NewNodeInfo nodes, boolean useTool, boolean useFile,
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boolean useNamesystemSpy, double clusterUtilization) throws Exception {
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boolean useNamesystemSpy, double clusterUtilization, BalancerParameters p) throws Exception {
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LOG.info("capacities = " + long2String(capacities));
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LOG.info("racks = " + Arrays.asList(racks));
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LOG.info("newCapacity= " + newCapacity);
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@ -746,7 +822,7 @@ private void doTest(Configuration conf, long[] capacities,
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totalNodes-1-i).getDatanodeId().getXferAddr());
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}
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}
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//polulate the exclude nodes
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//populate the exclude nodes
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if (nodes.getNumberofExcludeNodes() > 0) {
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int totalNodes = cluster.getDataNodes().size();
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for (int i=0; i < nodes.getNumberofExcludeNodes(); i++) {
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@ -756,16 +832,16 @@ private void doTest(Configuration conf, long[] capacities,
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}
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}
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}
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if(p == null) {
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// run balancer and validate results
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BalancerParameters.Builder pBuilder =
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new BalancerParameters.Builder();
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BalancerParameters.Builder pBuilder = new BalancerParameters.Builder();
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if (nodes != null) {
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pBuilder.setExcludedNodes(nodes.getNodesToBeExcluded());
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pBuilder.setIncludedNodes(nodes.getNodesToBeIncluded());
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pBuilder.setRunDuringUpgrade(false);
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}
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BalancerParameters p = pBuilder.build();
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p = pBuilder.build();
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}
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int expectedExcludedNodes = 0;
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if (nodes != null) {
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if (!nodes.getNodesToBeExcluded().isEmpty()) {
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@ -821,6 +897,9 @@ private void runBalancer(Configuration conf, long totalDfsUsedSpace,
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== 0) {
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assertEquals(ExitStatus.NO_MOVE_PROGRESS.getExitCode(), run);
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return;
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} else if(run == ExitStatus.NO_MOVE_BLOCK.getExitCode()) {
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LOG.error("Exit status returned: " + run);
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throw new Exception(String.valueOf(ExitStatus.NO_MOVE_BLOCK.getExitCode()));
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} else {
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assertEquals(ExitStatus.SUCCESS.getExitCode(), run);
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}
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@ -828,8 +907,22 @@ private void runBalancer(Configuration conf, long totalDfsUsedSpace,
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LOG.info(" .");
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try {
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long totalUsedSpace = totalDfsUsedSpace + totalNonDfsUsedSpace;
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int expectedExcludedSourceNodes = 0;
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int expectedExcludedTargetNodes = 0;
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if(!p.getExcludedSourceNodes().isEmpty()) {
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expectedExcludedSourceNodes = p.getExcludedSourceNodes().size();
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}
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if(!p.getExcludedTargetNodes().isEmpty()) {
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expectedExcludedTargetNodes = p.getExcludedTargetNodes().size();
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}
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||||
if(expectedExcludedSourceNodes > 0 || expectedExcludedTargetNodes > 0) {
|
||||
waitForBalancer(totalUsedSpace, totalCapacity, client, cluster, p,
|
||||
excludedNodes, checkExcludeNodesUtilization);
|
||||
expectedExcludedSourceNodes, expectedExcludedTargetNodes);
|
||||
} else {
|
||||
waitForBalancer(totalUsedSpace, totalCapacity, client, cluster, p,
|
||||
excludedNodes,
|
||||
checkExcludeNodesUtilization);
|
||||
}
|
||||
} catch (TimeoutException e) {
|
||||
// See HDFS-11682. NN may not get heartbeat to reflect the newest
|
||||
// block changes.
|
||||
@ -879,8 +972,9 @@ private static int runBalancer(Collection<URI> namenodes,
|
||||
b.resetData(conf);
|
||||
if (r.getExitStatus() == ExitStatus.IN_PROGRESS) {
|
||||
done = false;
|
||||
} else if (r.getExitStatus() != ExitStatus.SUCCESS) {
|
||||
//must be an error statue, return.
|
||||
} else if (r.getExitStatus() != ExitStatus.SUCCESS
|
||||
|| r.getExitStatus() != ExitStatus.NO_MOVE_BLOCK) {
|
||||
//must be an error status, return.
|
||||
return r.getExitStatus().getExitCode();
|
||||
} else {
|
||||
if (iteration > 0) {
|
||||
@ -1129,7 +1223,7 @@ public void testBalancer3() throws Exception {
|
||||
Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
doTest(conf, new long[]{CAPACITY, CAPACITY}, new String[]{RACK0, RACK1},
|
||||
CAPACITY, 1000L, RACK2, null, false, false, false, 0.3);
|
||||
CAPACITY, 1000L, RACK2, null, false, false, false, 0.3, null);
|
||||
}
|
||||
|
||||
private void testBalancerDefaultConstructor(Configuration conf,
|
||||
@ -1245,8 +1339,49 @@ public void testBalancerCliParseWithWrongParams() {
|
||||
Balancer.Cli.parse(parameters);
|
||||
fail(reason + " for -source parameter");
|
||||
} catch (IllegalArgumentException ignored) {
|
||||
// expected
|
||||
|
||||
}
|
||||
|
||||
parameters = new String[] {"-excludeSource"};
|
||||
try {
|
||||
Balancer.Cli.parse(parameters);
|
||||
fail(reason + " for -excludeSource parameter");
|
||||
} catch (IllegalArgumentException ignored) {
|
||||
|
||||
}
|
||||
|
||||
parameters = new String[] {"-source", "testnode1", "-excludeSource", "testnode2"};
|
||||
try {
|
||||
Balancer.Cli.parse(parameters);
|
||||
fail("Exception is expected when both -source and -excludeSource are specified");
|
||||
} catch (IllegalArgumentException e) {
|
||||
|
||||
}
|
||||
|
||||
parameters = new String[] {"-target"};
|
||||
try {
|
||||
Balancer.Cli.parse(parameters);
|
||||
fail(reason + " for -target parameter");
|
||||
} catch (IllegalArgumentException ignored) {
|
||||
|
||||
}
|
||||
|
||||
parameters = new String[] {"-excludeTarget"};
|
||||
try {
|
||||
Balancer.Cli.parse(parameters);
|
||||
fail(reason + " for -excludeTarget parameter");
|
||||
} catch (IllegalArgumentException ignored) {
|
||||
|
||||
}
|
||||
|
||||
parameters = new String[] {"-target", "testnode1", "-excludeTarget", "testnode2"};
|
||||
try {
|
||||
Balancer.Cli.parse(parameters);
|
||||
fail("Exception expected when both -target and -excludeTarget are specified");
|
||||
} catch (IllegalArgumentException e) {
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
@ -1920,7 +2055,7 @@ void testBalancerRPCDelay(int getBlocksMaxQps) throws Exception {
|
||||
// all get block calls, so if two iterations are performed, the duration
|
||||
// also includes the time it took to perform the block move ops in the
|
||||
// first iteration
|
||||
new PortNumberBasedNodes(1, 0, 0), false, false, true, 0.5);
|
||||
new PortNumberBasedNodes(1, 0, 0), false, false, true, 0.5, null);
|
||||
assertTrue("Number of getBlocks should be not less than " +
|
||||
getBlocksMaxQps, numGetBlocksCalls.get() >= getBlocksMaxQps);
|
||||
long durationMs = 1 + endGetBlocksTime.get() - startGetBlocksTime.get();
|
||||
@ -1932,6 +2067,132 @@ void testBalancerRPCDelay(int getBlocksMaxQps) throws Exception {
|
||||
getBlocksMaxQps, getBlockCallsPerSecond <= getBlocksMaxQps);
|
||||
}
|
||||
|
||||
/**
|
||||
* Test balancer with excluded target nodes.
|
||||
* One of three added nodes is excluded in the target nodes list.
|
||||
* Balancer should only move blocks to the two included nodes.
|
||||
*/
|
||||
@Test(timeout=100000)
|
||||
public void testBalancerExcludeTargetNodesNoMoveBlock() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
Set<String> excludeTargetNodes = new HashSet<>();
|
||||
excludeTargetNodes.add("datanodeZ");
|
||||
BalancerParameters.Builder pBuilder = new BalancerParameters.Builder();
|
||||
pBuilder.setExcludedTargetNodes(excludeTargetNodes);
|
||||
BalancerParameters p = pBuilder.build();
|
||||
Exception exception = assertThrows(Exception.class, () -> {
|
||||
doTest(conf, CAPACITY, RACK2,
|
||||
new HostNameBasedNodes(new String[]{"datanodeX", "datanodeY", "datanodeZ"},
|
||||
BalancerParameters.DEFAULT.getExcludedNodes(),
|
||||
BalancerParameters.DEFAULT.getIncludedNodes()),
|
||||
false, false, p);
|
||||
});
|
||||
|
||||
assertTrue(exception.getMessage()
|
||||
.contains(String.valueOf(ExitStatus.NO_MOVE_BLOCK.getExitCode())));
|
||||
}
|
||||
|
||||
/**
|
||||
* Test balancer with included target nodes.
|
||||
* Two of three added nodes are included in the target nodes list.
|
||||
* Balancer should only move blocks to the included nodes.
|
||||
*/
|
||||
@Test(timeout=100000)
|
||||
public void testBalancerIncludeTargetNodesNoMoveBlock() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
Set<String> includeTargetNodes = new HashSet<>();
|
||||
includeTargetNodes.add("datanodeY");
|
||||
includeTargetNodes.add("datanodeZ");
|
||||
BalancerParameters.Builder pBuilder = new BalancerParameters.Builder();
|
||||
pBuilder.setTargetNodes(includeTargetNodes);
|
||||
BalancerParameters p = pBuilder.build();
|
||||
Exception exception = assertThrows(Exception.class, () -> {
|
||||
doTest(conf, CAPACITY, RACK2,
|
||||
new HostNameBasedNodes(new String[]{"datanodeX", "datanodeY", "datanodeZ"},
|
||||
BalancerParameters.DEFAULT.getExcludedNodes(),
|
||||
BalancerParameters.DEFAULT.getIncludedNodes()),
|
||||
false, false, p);
|
||||
});
|
||||
|
||||
assertTrue(exception.getMessage()
|
||||
.contains(String.valueOf(ExitStatus.NO_MOVE_BLOCK.getExitCode())));
|
||||
}
|
||||
|
||||
/**
|
||||
* Test balancer with included target nodes.
|
||||
* Three of three added nodes are included in the target nodes list.
|
||||
* Balancer should exit with success code.
|
||||
*/
|
||||
@Test(timeout=100000)
|
||||
public void testBalancerIncludeTargetNodesSuccess() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
Set<String> includeTargetNodes = new HashSet<>();
|
||||
includeTargetNodes.add("datanodeX");
|
||||
includeTargetNodes.add("datanodeY");
|
||||
includeTargetNodes.add("datanodeZ");
|
||||
BalancerParameters.Builder pBuilder = new BalancerParameters.Builder();
|
||||
pBuilder.setTargetNodes(includeTargetNodes);
|
||||
BalancerParameters p = pBuilder.build();
|
||||
doTest(conf, CAPACITY, RACK2,
|
||||
new HostNameBasedNodes(new String[]{"datanodeX", "datanodeY", "datanodeZ"},
|
||||
BalancerParameters.DEFAULT.getExcludedNodes(),
|
||||
BalancerParameters.DEFAULT.getIncludedNodes()),
|
||||
false, false, p);
|
||||
}
|
||||
|
||||
/**
|
||||
* Test balancer with included source nodes.
|
||||
* Since newly added nodes are the only included source nodes no balancing will occur.
|
||||
*/
|
||||
@Test(timeout=100000)
|
||||
public void testBalancerIncludeSourceNodesNoMoveBlock() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
Set<String> includeSourceNodes = new HashSet<>();
|
||||
includeSourceNodes.add("datanodeX");
|
||||
includeSourceNodes.add("datanodeY");
|
||||
includeSourceNodes.add("datanodeZ");
|
||||
BalancerParameters.Builder pBuilder = new BalancerParameters.Builder();
|
||||
pBuilder.setSourceNodes(includeSourceNodes);
|
||||
BalancerParameters p = pBuilder.build();
|
||||
Exception exception = assertThrows(Exception.class, () -> {
|
||||
doTest(conf, CAPACITY, RACK2,
|
||||
new HostNameBasedNodes(new String[]{"datanodeX", "datanodeY", "datanodeZ"},
|
||||
BalancerParameters.DEFAULT.getExcludedNodes(),
|
||||
BalancerParameters.DEFAULT.getIncludedNodes()),
|
||||
false, false, p);
|
||||
});
|
||||
|
||||
assertTrue(exception.getMessage()
|
||||
.contains(String.valueOf(ExitStatus.NO_MOVE_BLOCK.getExitCode())));
|
||||
}
|
||||
|
||||
/**
|
||||
* Test balancer with excluded source nodes.
|
||||
* Since newly added nodes will not be selected as a source,
|
||||
* all nodes will be included in balancing.
|
||||
*/
|
||||
@Test(timeout=100000)
|
||||
public void testBalancerExcludeSourceNodes() throws Exception {
|
||||
final Configuration conf = new HdfsConfiguration();
|
||||
initConf(conf);
|
||||
Set<String> excludeSourceNodes = new HashSet<>();
|
||||
excludeSourceNodes.add("datanodeX");
|
||||
excludeSourceNodes.add("datanodeY");
|
||||
BalancerParameters.Builder pBuilder = new BalancerParameters.Builder();
|
||||
pBuilder.setExcludedSourceNodes(excludeSourceNodes);
|
||||
BalancerParameters p = pBuilder.build();
|
||||
doTest(conf, CAPACITY, RACK2,
|
||||
new HostNameBasedNodes(new String[]{"datanodeX", "datanodeY", "datanodeZ"},
|
||||
BalancerParameters.DEFAULT.getExcludedNodes(),
|
||||
BalancerParameters.DEFAULT.getIncludedNodes()), false,
|
||||
false, p);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* @param args
|
||||
*/
|
||||
|
Loading…
Reference in New Issue
Block a user