HDFS-13283. Percentage based Reserved Space Calculation for DataNode. Contributed by Lukas Majercak.
This commit is contained in:
Inigo Goiri
parent
9b09555451
commit
fc074a359c
@ -26,6 +26,7 @@
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault;
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyRackFaultTolerant;
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import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskReplicaLruTracker;
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import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.ReservedSpaceCalculator;
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import org.apache.hadoop.http.HttpConfig;
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/**
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@ -647,8 +648,16 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
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public static final String DFS_DATANODE_DNS_INTERFACE_DEFAULT = "default";
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public static final String DFS_DATANODE_DNS_NAMESERVER_KEY = "dfs.datanode.dns.nameserver";
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public static final String DFS_DATANODE_DNS_NAMESERVER_DEFAULT = "default";
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public static final String DFS_DATANODE_DU_RESERVED_CALCULATOR_KEY =
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"dfs.datanode.du.reserved.calculator";
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public static final Class<? extends ReservedSpaceCalculator>
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DFS_DATANODE_DU_RESERVED_CALCULATOR_DEFAULT =
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ReservedSpaceCalculator.ReservedSpaceCalculatorAbsolute.class;
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public static final String DFS_DATANODE_DU_RESERVED_KEY = "dfs.datanode.du.reserved";
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public static final long DFS_DATANODE_DU_RESERVED_DEFAULT = 0;
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public static final String DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY =
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"dfs.datanode.du.reserved.pct";
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public static final int DFS_DATANODE_DU_RESERVED_PERCENTAGE_DEFAULT = 0;
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public static final String DFS_DATANODE_HANDLER_COUNT_KEY = "dfs.datanode.handler.count";
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public static final int DFS_DATANODE_HANDLER_COUNT_DEFAULT = 10;
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public static final String DFS_DATANODE_HTTP_ADDRESS_KEY = "dfs.datanode.http.address";
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@ -78,7 +78,6 @@
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import org.apache.hadoop.hdfs.server.protocol.DatanodeStorage;
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import org.apache.hadoop.util.CloseableReferenceCount;
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import org.apache.hadoop.util.DiskChecker.DiskErrorException;
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import org.apache.hadoop.util.StringUtils;
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import org.apache.hadoop.util.Time;
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import org.apache.hadoop.util.Timer;
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import org.slf4j.Logger;
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@ -121,7 +120,7 @@ public class FsVolumeImpl implements FsVolumeSpi {
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private final File currentDir; // <StorageDirectory>/current
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private final DF usage;
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private final long reserved;
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private final ReservedSpaceCalculator reserved;
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private CloseableReferenceCount reference = new CloseableReferenceCount();
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// Disk space reserved for blocks (RBW or Re-replicating) open for write.
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@ -142,10 +141,16 @@ public class FsVolumeImpl implements FsVolumeSpi {
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* contention.
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*/
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protected ThreadPoolExecutor cacheExecutor;
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FsVolumeImpl(
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FsDatasetImpl dataset, String storageID, StorageDirectory sd,
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FsVolumeImpl(FsDatasetImpl dataset, String storageID, StorageDirectory sd,
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FileIoProvider fileIoProvider, Configuration conf) throws IOException {
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// outside tests, usage created in ReservedSpaceCalculator.Builder
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this(dataset, storageID, sd, fileIoProvider, conf, null);
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}
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FsVolumeImpl(FsDatasetImpl dataset, String storageID, StorageDirectory sd,
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FileIoProvider fileIoProvider, Configuration conf, DF usage)
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throws IOException {
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if (sd.getStorageLocation() == null) {
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throw new IOException("StorageLocation specified for storage directory " +
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@ -157,23 +162,20 @@ public class FsVolumeImpl implements FsVolumeSpi {
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this.storageLocation = sd.getStorageLocation();
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this.currentDir = sd.getCurrentDir();
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this.storageType = storageLocation.getStorageType();
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this.reserved = conf.getLong(DFSConfigKeys.DFS_DATANODE_DU_RESERVED_KEY
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+ "." + StringUtils.toLowerCase(storageType.toString()), conf.getLong(
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DFSConfigKeys.DFS_DATANODE_DU_RESERVED_KEY,
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DFSConfigKeys.DFS_DATANODE_DU_RESERVED_DEFAULT));
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this.configuredCapacity = -1;
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this.usage = usage;
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if (currentDir != null) {
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File parent = currentDir.getParentFile();
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this.usage = new DF(parent, conf);
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cacheExecutor = initializeCacheExecutor(parent);
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this.metrics = DataNodeVolumeMetrics.create(conf, parent.getPath());
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} else {
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this.usage = null;
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cacheExecutor = null;
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this.metrics = null;
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}
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this.conf = conf;
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this.fileIoProvider = fileIoProvider;
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this.reserved = new ReservedSpaceCalculator.Builder(conf)
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.setUsage(usage).setStorageType(storageType).build();
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}
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protected ThreadPoolExecutor initializeCacheExecutor(File parent) {
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@ -399,7 +401,7 @@ long getBlockPoolUsed(String bpid) throws IOException {
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@VisibleForTesting
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public long getCapacity() {
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if (configuredCapacity < 0) {
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long remaining = usage.getCapacity() - reserved;
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long remaining = usage.getCapacity() - getReserved();
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return remaining > 0 ? remaining : 0;
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}
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@ -439,8 +441,9 @@ long getActualNonDfsUsed() throws IOException {
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private long getRemainingReserved() throws IOException {
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long actualNonDfsUsed = getActualNonDfsUsed();
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if (actualNonDfsUsed < reserved) {
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return reserved - actualNonDfsUsed;
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long actualReserved = getReserved();
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if (actualNonDfsUsed < actualReserved) {
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return actualReserved - actualNonDfsUsed;
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}
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return 0L;
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}
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@ -454,10 +457,11 @@ private long getRemainingReserved() throws IOException {
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*/
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public long getNonDfsUsed() throws IOException {
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long actualNonDfsUsed = getActualNonDfsUsed();
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if (actualNonDfsUsed < reserved) {
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long actualReserved = getReserved();
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if (actualNonDfsUsed < actualReserved) {
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return 0L;
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}
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return actualNonDfsUsed - reserved;
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return actualNonDfsUsed - actualReserved;
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}
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@VisibleForTesting
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@ -476,7 +480,7 @@ long getRecentReserved() {
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}
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long getReserved(){
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return reserved;
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return reserved.getReserved();
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}
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@VisibleForTesting
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@ -19,7 +19,9 @@
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import java.io.IOException;
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import com.google.common.annotations.VisibleForTesting;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.DF;
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import org.apache.hadoop.fs.StorageType;
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import org.apache.hadoop.hdfs.server.common.Storage.StorageDirectory;
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import org.apache.hadoop.hdfs.server.datanode.FileIoProvider;
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@ -34,12 +36,14 @@ public class FsVolumeImplBuilder {
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private StorageDirectory sd;
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private Configuration conf;
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private FileIoProvider fileIoProvider;
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private DF usage;
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public FsVolumeImplBuilder() {
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dataset = null;
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storageID = null;
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sd = null;
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conf = null;
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usage = null;
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}
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FsVolumeImplBuilder setDataset(FsDatasetImpl dataset) {
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@ -67,15 +71,25 @@ FsVolumeImplBuilder setFileIoProvider(FileIoProvider fileIoProvider) {
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return this;
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}
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@VisibleForTesting
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FsVolumeImplBuilder setUsage(DF newUsage) {
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this.usage = newUsage;
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return this;
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}
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FsVolumeImpl build() throws IOException {
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if (sd.getStorageLocation().getStorageType() == StorageType.PROVIDED) {
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return new ProvidedVolumeImpl(dataset, storageID, sd,
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fileIoProvider != null ? fileIoProvider :
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new FileIoProvider(null, null), conf);
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}
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if (null == usage) {
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// set usage unless overridden by unit tests
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usage = new DF(sd.getCurrentDir().getParentFile(), conf);
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}
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return new FsVolumeImpl(
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dataset, storageID, sd,
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fileIoProvider != null ? fileIoProvider :
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new FileIoProvider(null, null), conf);
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new FileIoProvider(null, null), conf, usage);
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}
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}
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@ -270,7 +270,7 @@ void incDfsUsed(long value) {
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ProvidedVolumeImpl(FsDatasetImpl dataset, String storageID,
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StorageDirectory sd, FileIoProvider fileIoProvider,
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Configuration conf) throws IOException {
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super(dataset, storageID, sd, fileIoProvider, conf);
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super(dataset, storageID, sd, fileIoProvider, conf, null);
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assert getStorageLocation().getStorageType() == StorageType.PROVIDED:
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"Only provided storages must use ProvidedVolume";
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@ -0,0 +1,227 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.hdfs.server.datanode.fsdataset.impl;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.DF;
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import org.apache.hadoop.fs.StorageType;
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import org.apache.hadoop.util.StringUtils;
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import java.lang.reflect.Constructor;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DU_RESERVED_DEFAULT;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DU_RESERVED_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DU_RESERVED_PERCENTAGE_DEFAULT;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DU_RESERVED_CALCULATOR_DEFAULT;
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import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DU_RESERVED_CALCULATOR_KEY;
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/**
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* Used for calculating file system space reserved for non-HDFS data.
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*/
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public abstract class ReservedSpaceCalculator {
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/**
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* Used for creating instances of ReservedSpaceCalculator.
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*/
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public static class Builder {
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private final Configuration conf;
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private DF usage;
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private StorageType storageType;
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public Builder(Configuration conf) {
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this.conf = conf;
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}
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public Builder setUsage(DF newUsage) {
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this.usage = newUsage;
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return this;
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}
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public Builder setStorageType(
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StorageType newStorageType) {
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this.storageType = newStorageType;
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return this;
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}
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ReservedSpaceCalculator build() {
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try {
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Class<? extends ReservedSpaceCalculator> clazz = conf.getClass(
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DFS_DATANODE_DU_RESERVED_CALCULATOR_KEY,
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DFS_DATANODE_DU_RESERVED_CALCULATOR_DEFAULT,
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ReservedSpaceCalculator.class);
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Constructor constructor = clazz.getConstructor(
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Configuration.class, DF.class, StorageType.class);
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return (ReservedSpaceCalculator) constructor.newInstance(
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conf, usage, storageType);
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} catch (Exception e) {
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throw new IllegalStateException(
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"Error instantiating ReservedSpaceCalculator", e);
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}
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}
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}
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private final DF usage;
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private final Configuration conf;
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private final StorageType storageType;
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ReservedSpaceCalculator(Configuration conf, DF usage,
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StorageType storageType) {
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this.usage = usage;
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this.conf = conf;
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this.storageType = storageType;
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}
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DF getUsage() {
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return usage;
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}
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long getReservedFromConf(String key, long defaultValue) {
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return conf.getLong(key + "." + StringUtils.toLowerCase(
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storageType.toString()), conf.getLong(key, defaultValue));
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}
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/**
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* Return the capacity of the file system space reserved for non-HDFS.
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*
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* @return the number of bytes reserved for non-HDFS.
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*/
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abstract long getReserved();
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/**
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* Based on absolute number of reserved bytes.
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*/
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public static class ReservedSpaceCalculatorAbsolute extends
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ReservedSpaceCalculator {
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private final long reservedBytes;
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public ReservedSpaceCalculatorAbsolute(Configuration conf, DF usage,
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StorageType storageType) {
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super(conf, usage, storageType);
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this.reservedBytes = getReservedFromConf(DFS_DATANODE_DU_RESERVED_KEY,
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DFS_DATANODE_DU_RESERVED_DEFAULT);
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}
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@Override
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long getReserved() {
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return reservedBytes;
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}
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}
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/**
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* Based on percentage of total capacity in the storage.
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*/
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public static class ReservedSpaceCalculatorPercentage extends
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ReservedSpaceCalculator {
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private final long reservedPct;
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public ReservedSpaceCalculatorPercentage(Configuration conf, DF usage,
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StorageType storageType) {
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super(conf, usage, storageType);
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this.reservedPct = getReservedFromConf(
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DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY,
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DFS_DATANODE_DU_RESERVED_PERCENTAGE_DEFAULT);
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}
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@Override
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long getReserved() {
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return getPercentage(getUsage().getCapacity(), reservedPct);
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}
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}
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/**
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* Calculates absolute and percentage based reserved space and
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* picks the one that will yield more reserved space.
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*/
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public static class ReservedSpaceCalculatorConservative extends
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ReservedSpaceCalculator {
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private final long reservedBytes;
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private final long reservedPct;
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public ReservedSpaceCalculatorConservative(Configuration conf, DF usage,
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StorageType storageType) {
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super(conf, usage, storageType);
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this.reservedBytes = getReservedFromConf(DFS_DATANODE_DU_RESERVED_KEY,
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DFS_DATANODE_DU_RESERVED_DEFAULT);
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this.reservedPct = getReservedFromConf(
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DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY,
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DFS_DATANODE_DU_RESERVED_PERCENTAGE_DEFAULT);
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}
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long getReservedBytes() {
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return reservedBytes;
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}
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long getReservedPct() {
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return reservedPct;
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}
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@Override
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long getReserved() {
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return Math.max(getReservedBytes(),
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getPercentage(getUsage().getCapacity(), getReservedPct()));
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}
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}
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/**
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* Calculates absolute and percentage based reserved space and
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* picks the one that will yield less reserved space.
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*/
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public static class ReservedSpaceCalculatorAggressive extends
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ReservedSpaceCalculator {
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private final long reservedBytes;
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private final long reservedPct;
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public ReservedSpaceCalculatorAggressive(Configuration conf, DF usage,
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StorageType storageType) {
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super(conf, usage, storageType);
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this.reservedBytes = getReservedFromConf(DFS_DATANODE_DU_RESERVED_KEY,
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DFS_DATANODE_DU_RESERVED_DEFAULT);
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this.reservedPct = getReservedFromConf(
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DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY,
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DFS_DATANODE_DU_RESERVED_PERCENTAGE_DEFAULT);
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}
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long getReservedBytes() {
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return reservedBytes;
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}
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long getReservedPct() {
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return reservedPct;
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}
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@Override
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long getReserved() {
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return Math.min(getReservedBytes(),
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getPercentage(getUsage().getCapacity(), getReservedPct()));
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}
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}
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private static long getPercentage(long total, long percentage) {
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return (total * percentage) / 100;
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}
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}
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@ -326,6 +326,20 @@
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</description>
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</property>
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<property>
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<name>dfs.datanode.du.reserved.calculator</name>
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<value>org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.ReservedSpaceCalculator$ReservedSpaceCalculatorAbsolute</value>
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<description>Determines the class of ReservedSpaceCalculator to be used for
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calculating disk space reservedfor non-HDFS data. The default calculator is
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ReservedSpaceCalculatorAbsolute which will use dfs.datanode.du.reserved
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for a static reserved number of bytes. ReservedSpaceCalculatorPercentage
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will use dfs.datanode.du.reserved.pct to calculate the reserved number
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of bytes based on the size of the storage. ReservedSpaceCalculatorConservative and
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ReservedSpaceCalculatorAggressive will use their combination, Conservative will use
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maximum, Aggressive minimum. For more details see ReservedSpaceCalculator.
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</description>
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</property>
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<property>
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<name>dfs.datanode.du.reserved</name>
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<value>0</value>
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@ -338,6 +352,20 @@
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</description>
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</property>
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<property>
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<name>dfs.datanode.du.reserved.pct</name>
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<value>0</value>
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<description>Reserved space in percentage. Read dfs.datanode.du.reserved.calculator to see
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when this takes effect. The actual number of bytes reserved will be calculated by using the
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total capacity of the data directory in question. Specific storage type based reservation
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is also supported. The property can be followed with corresponding storage types
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([ssd]/[disk]/[archive]/[ram_disk]) for cluster with heterogeneous storage.
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For example, reserved percentage space for RAM_DISK storage can be configured using property
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'dfs.datanode.du.reserved.pct.ram_disk'. If specific storage type reservation is not configured
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||||
then dfs.datanode.du.reserved.pct will be used.
|
||||
</description>
|
||||
</property>
|
||||
|
||||
<property>
|
||||
<name>dfs.namenode.name.dir</name>
|
||||
<value>file://${hadoop.tmp.dir}/dfs/name</value>
|
||||
|
||||
@ -19,6 +19,7 @@
|
||||
|
||||
import com.google.common.base.Supplier;
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.fs.DF;
|
||||
import org.apache.hadoop.fs.FileSystemTestHelper;
|
||||
import org.apache.hadoop.fs.StorageType;
|
||||
import org.apache.hadoop.hdfs.DFSConfigKeys;
|
||||
@ -40,15 +41,18 @@
|
||||
import java.util.Collections;
|
||||
import java.util.List;
|
||||
import java.util.concurrent.TimeoutException;
|
||||
|
||||
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY;
|
||||
import static org.junit.Assert.assertEquals;
|
||||
import static org.junit.Assert.assertNotEquals;
|
||||
import static org.junit.Assert.assertNull;
|
||||
import static org.junit.Assert.fail;
|
||||
import static org.mockito.Mockito.mock;
|
||||
import static org.mockito.Mockito.when;
|
||||
|
||||
public class TestFsVolumeList {
|
||||
|
||||
private final Configuration conf = new Configuration();
|
||||
private Configuration conf;
|
||||
private VolumeChoosingPolicy<FsVolumeImpl> blockChooser =
|
||||
new RoundRobinVolumeChoosingPolicy<>();
|
||||
private FsDatasetImpl dataset = null;
|
||||
@ -63,6 +67,7 @@ public void setUp() {
|
||||
blockScannerConf.setInt(DFSConfigKeys.
|
||||
DFS_DATANODE_SCAN_PERIOD_HOURS_KEY, -1);
|
||||
blockScanner = new BlockScanner(null, blockScannerConf);
|
||||
conf = new Configuration();
|
||||
}
|
||||
|
||||
@Test(timeout=30000)
|
||||
@ -227,4 +232,87 @@ public void testNonDfsUsedMetricForVolume() throws Exception {
|
||||
actualNonDfsUsage - duReserved;
|
||||
assertEquals(expectedNonDfsUsage, spyVolume.getNonDfsUsed());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testDfsReservedPercentageForDifferentStorageTypes()
|
||||
throws IOException {
|
||||
conf.setClass(DFSConfigKeys.DFS_DATANODE_DU_RESERVED_CALCULATOR_KEY,
|
||||
ReservedSpaceCalculator.ReservedSpaceCalculatorPercentage.class,
|
||||
ReservedSpaceCalculator.class);
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY, 15);
|
||||
|
||||
File volDir = new File(baseDir, "volume-0");
|
||||
volDir.mkdirs();
|
||||
|
||||
DF usage = mock(DF.class);
|
||||
when(usage.getCapacity()).thenReturn(4000L);
|
||||
when(usage.getAvailable()).thenReturn(1000L);
|
||||
|
||||
// when storage type reserved is not configured, should consider
|
||||
// dfs.datanode.du.reserved.pct
|
||||
FsVolumeImpl volume = new FsVolumeImplBuilder()
|
||||
.setConf(conf)
|
||||
.setDataset(dataset)
|
||||
.setStorageID("storage-id")
|
||||
.setStorageDirectory(
|
||||
new StorageDirectory(StorageLocation.parse(
|
||||
"[RAM_DISK]" + volDir.getPath())))
|
||||
.setUsage(usage)
|
||||
.build();
|
||||
|
||||
assertEquals(600, volume.getReserved());
|
||||
assertEquals(3400, volume.getCapacity());
|
||||
assertEquals(400, volume.getAvailable());
|
||||
|
||||
// when storage type reserved is configured.
|
||||
conf.setLong(
|
||||
DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY + "."
|
||||
+ StringUtils.toLowerCase(StorageType.RAM_DISK.toString()), 10);
|
||||
conf.setLong(
|
||||
DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY + "."
|
||||
+ StringUtils.toLowerCase(StorageType.SSD.toString()), 50);
|
||||
FsVolumeImpl volume1 = new FsVolumeImplBuilder()
|
||||
.setConf(conf)
|
||||
.setDataset(dataset)
|
||||
.setStorageID("storage-id")
|
||||
.setStorageDirectory(
|
||||
new StorageDirectory(StorageLocation.parse(
|
||||
"[RAM_DISK]" + volDir.getPath())))
|
||||
.setUsage(usage)
|
||||
.build();
|
||||
assertEquals(400, volume1.getReserved());
|
||||
assertEquals(3600, volume1.getCapacity());
|
||||
assertEquals(600, volume1.getAvailable());
|
||||
FsVolumeImpl volume2 = new FsVolumeImplBuilder()
|
||||
.setConf(conf)
|
||||
.setDataset(dataset)
|
||||
.setStorageID("storage-id")
|
||||
.setStorageDirectory(
|
||||
new StorageDirectory(StorageLocation.parse(
|
||||
"[SSD]" + volDir.getPath())))
|
||||
.setUsage(usage)
|
||||
.build();
|
||||
assertEquals(2000, volume2.getReserved());
|
||||
assertEquals(2000, volume2.getCapacity());
|
||||
assertEquals(0, volume2.getAvailable());
|
||||
FsVolumeImpl volume3 = new FsVolumeImplBuilder()
|
||||
.setConf(conf)
|
||||
.setDataset(dataset)
|
||||
.setStorageID("storage-id")
|
||||
.setStorageDirectory(
|
||||
new StorageDirectory(StorageLocation.parse(
|
||||
"[DISK]" + volDir.getPath())))
|
||||
.setUsage(usage)
|
||||
.build();
|
||||
assertEquals(600, volume3.getReserved());
|
||||
FsVolumeImpl volume4 = new FsVolumeImplBuilder()
|
||||
.setConf(conf)
|
||||
.setDataset(dataset)
|
||||
.setStorageID("storage-id")
|
||||
.setStorageDirectory(
|
||||
new StorageDirectory(StorageLocation.parse(volDir.getPath())))
|
||||
.setUsage(usage)
|
||||
.build();
|
||||
assertEquals(600, volume4.getReserved());
|
||||
}
|
||||
}
|
||||
|
||||
@ -0,0 +1,171 @@
|
||||
/**
|
||||
* 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.datanode.fsdataset.impl;
|
||||
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.fs.DF;
|
||||
import org.apache.hadoop.fs.StorageType;
|
||||
import org.junit.Before;
|
||||
import org.junit.Test;
|
||||
import org.mockito.Mockito;
|
||||
|
||||
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DU_RESERVED_KEY;
|
||||
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY;
|
||||
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DU_RESERVED_CALCULATOR_KEY;
|
||||
import static org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.ReservedSpaceCalculator.ReservedSpaceCalculatorAbsolute;
|
||||
import static org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.ReservedSpaceCalculator.ReservedSpaceCalculatorAggressive;
|
||||
import static org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.ReservedSpaceCalculator.ReservedSpaceCalculatorConservative;
|
||||
import static org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.ReservedSpaceCalculator.ReservedSpaceCalculatorPercentage;
|
||||
import static org.junit.Assert.assertEquals;
|
||||
import static org.mockito.Mockito.when;
|
||||
|
||||
/**
|
||||
* Unit testing for different types of ReservedSpace calculators.
|
||||
*/
|
||||
public class TestReservedSpaceCalculator {
|
||||
|
||||
private Configuration conf;
|
||||
private DF usage;
|
||||
private ReservedSpaceCalculator reserved;
|
||||
|
||||
@Before
|
||||
public void setUp() {
|
||||
conf = new Configuration();
|
||||
usage = Mockito.mock(DF.class);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testReservedSpaceAbsolute() {
|
||||
conf.setClass(DFS_DATANODE_DU_RESERVED_CALCULATOR_KEY,
|
||||
ReservedSpaceCalculatorAbsolute.class,
|
||||
ReservedSpaceCalculator.class);
|
||||
|
||||
// Test both using global configuration
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_KEY, 900);
|
||||
|
||||
checkReserved(StorageType.DISK, 10000, 900);
|
||||
checkReserved(StorageType.SSD, 10000, 900);
|
||||
checkReserved(StorageType.ARCHIVE, 10000, 900);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testReservedSpaceAbsolutePerStorageType() {
|
||||
conf.setClass(DFS_DATANODE_DU_RESERVED_CALCULATOR_KEY,
|
||||
ReservedSpaceCalculatorAbsolute.class,
|
||||
ReservedSpaceCalculator.class);
|
||||
|
||||
// Test DISK
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_KEY + ".disk", 500);
|
||||
checkReserved(StorageType.DISK, 2300, 500);
|
||||
|
||||
// Test SSD
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_KEY + ".ssd", 750);
|
||||
checkReserved(StorageType.SSD, 1550, 750);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testReservedSpacePercentage() {
|
||||
conf.setClass(DFS_DATANODE_DU_RESERVED_CALCULATOR_KEY,
|
||||
ReservedSpaceCalculatorPercentage.class,
|
||||
ReservedSpaceCalculator.class);
|
||||
|
||||
// Test both using global configuration
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY, 10);
|
||||
checkReserved(StorageType.DISK, 10000, 1000);
|
||||
checkReserved(StorageType.SSD, 10000, 1000);
|
||||
checkReserved(StorageType.ARCHIVE, 10000, 1000);
|
||||
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY, 50);
|
||||
checkReserved(StorageType.DISK, 4000, 2000);
|
||||
checkReserved(StorageType.SSD, 4000, 2000);
|
||||
checkReserved(StorageType.ARCHIVE, 4000, 2000);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testReservedSpacePercentagePerStorageType() {
|
||||
conf.setClass(DFS_DATANODE_DU_RESERVED_CALCULATOR_KEY,
|
||||
ReservedSpaceCalculatorPercentage.class,
|
||||
ReservedSpaceCalculator.class);
|
||||
|
||||
// Test DISK
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY + ".disk", 20);
|
||||
checkReserved(StorageType.DISK, 1600, 320);
|
||||
|
||||
// Test SSD
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY + ".ssd", 50);
|
||||
checkReserved(StorageType.SSD, 8001, 4000);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testReservedSpaceConservativePerStorageType() {
|
||||
// This policy should take the maximum of the two
|
||||
conf.setClass(DFS_DATANODE_DU_RESERVED_CALCULATOR_KEY,
|
||||
ReservedSpaceCalculatorConservative.class,
|
||||
ReservedSpaceCalculator.class);
|
||||
|
||||
// Test DISK + taking the reserved bytes over percentage,
|
||||
// as that gives more reserved space
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_KEY + ".disk", 800);
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY + ".disk", 20);
|
||||
checkReserved(StorageType.DISK, 1600, 800);
|
||||
|
||||
// Test ARCHIVE + taking reserved space based on the percentage,
|
||||
// as that gives more reserved space
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_KEY + ".archive", 1300);
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY + ".archive", 50);
|
||||
checkReserved(StorageType.ARCHIVE, 6200, 3100);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testReservedSpaceAggresivePerStorageType() {
|
||||
// This policy should take the maximum of the two
|
||||
conf.setClass(DFS_DATANODE_DU_RESERVED_CALCULATOR_KEY,
|
||||
ReservedSpaceCalculatorAggressive.class,
|
||||
ReservedSpaceCalculator.class);
|
||||
|
||||
// Test RAM_DISK + taking the reserved bytes over percentage,
|
||||
// as that gives less reserved space
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_KEY + ".ram_disk", 100);
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY + ".ram_disk", 10);
|
||||
checkReserved(StorageType.RAM_DISK, 1600, 100);
|
||||
|
||||
// Test ARCHIVE + taking reserved space based on the percentage,
|
||||
// as that gives less reserved space
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_KEY + ".archive", 20000);
|
||||
conf.setLong(DFS_DATANODE_DU_RESERVED_PERCENTAGE_KEY + ".archive", 5);
|
||||
checkReserved(StorageType.ARCHIVE, 100000, 5000);
|
||||
}
|
||||
|
||||
@Test(expected = IllegalStateException.class)
|
||||
public void testInvalidCalculator() {
|
||||
conf.set(DFS_DATANODE_DU_RESERVED_CALCULATOR_KEY, "INVALIDTYPE");
|
||||
reserved = new ReservedSpaceCalculator.Builder(conf)
|
||||
.setUsage(usage)
|
||||
.setStorageType(StorageType.DISK)
|
||||
.build();
|
||||
}
|
||||
|
||||
private void checkReserved(StorageType storageType,
|
||||
long totalCapacity, long reservedExpected) {
|
||||
when(usage.getCapacity()).thenReturn(totalCapacity);
|
||||
|
||||
reserved = new ReservedSpaceCalculator.Builder(conf).setUsage(usage)
|
||||
.setStorageType(storageType).build();
|
||||
assertEquals(reservedExpected, reserved.getReserved());
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user