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FSNamesystem.java
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FSNamesystem.java
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/**
* 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.namenode;
import static org.apache.commons.text.StringEscapeUtils.escapeJava;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.FS_TRASH_INTERVAL_DEFAULT;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.FS_TRASH_INTERVAL_KEY;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.HADOOP_CALLER_CONTEXT_ENABLED_DEFAULT;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.HADOOP_CALLER_CONTEXT_ENABLED_KEY;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.HADOOP_CALLER_CONTEXT_MAX_SIZE_DEFAULT;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.HADOOP_CALLER_CONTEXT_MAX_SIZE_KEY;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.HADOOP_CALLER_CONTEXT_SEPARATOR_DEFAULT;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.HADOOP_CALLER_CONTEXT_SEPARATOR_KEY;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.HADOOP_CALLER_CONTEXT_SIGNATURE_MAX_SIZE_DEFAULT;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.HADOOP_CALLER_CONTEXT_SIGNATURE_MAX_SIZE_KEY;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.IO_FILE_BUFFER_SIZE_DEFAULT;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.IO_FILE_BUFFER_SIZE_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BLOCK_SIZE_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BLOCK_SIZE_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_AUDIT_LOG_WITH_REMOTE_PORT_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_AUDIT_LOG_WITH_REMOTE_PORT_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_STORAGE_POLICY_ENABLED_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_STORAGE_POLICY_PERMISSIONS_SUPERUSER_ONLY_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_STORAGE_POLICY_PERMISSIONS_SUPERUSER_ONLY_KEY;
import static org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.DFS_BYTES_PER_CHECKSUM_DEFAULT;
import static org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.DFS_BYTES_PER_CHECKSUM_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_CHECKSUM_TYPE_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_CHECKSUM_TYPE_KEY;
import static org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.DFS_CLIENT_WRITE_PACKET_SIZE_DEFAULT;
import static org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.DFS_CLIENT_WRITE_PACKET_SIZE_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_ENCRYPT_DATA_TRANSFER_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_ENCRYPT_DATA_TRANSFER_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_HA_STANDBY_CHECKPOINTS_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_HA_STANDBY_CHECKPOINTS_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_AUDIT_LOGGERS_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_AUDIT_LOG_ASYNC_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_AUDIT_LOG_ASYNC_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_AUDIT_LOG_TOKEN_TRACKING_ID_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_AUDIT_LOG_TOKEN_TRACKING_ID_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_TXNS_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_TXNS_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_DEFAULT_AUDIT_LOGGER_NAME;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_DELEGATION_KEY_UPDATE_INTERVAL_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_DELEGATION_KEY_UPDATE_INTERVAL_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_DELEGATION_TOKEN_ALWAYS_USE_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_DELEGATION_TOKEN_ALWAYS_USE_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_DELEGATION_TOKEN_MAX_LIFETIME_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_DELEGATION_TOKEN_MAX_LIFETIME_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_DELEGATION_TOKEN_RENEW_INTERVAL_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_DELEGATION_TOKEN_RENEW_INTERVAL_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_REQUIRED_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_EDIT_LOG_AUTOROLL_CHECK_INTERVAL_MS;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_EDIT_LOG_AUTOROLL_CHECK_INTERVAL_MS_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_EDIT_LOG_AUTOROLL_MULTIPLIER_THRESHOLD;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_EDIT_LOG_AUTOROLL_MULTIPLIER_THRESHOLD_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_ENABLE_RETRY_CACHE_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_ENABLE_RETRY_CACHE_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_INODE_ATTRIBUTES_PROVIDER_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_LAZY_PERSIST_FILE_SCRUB_INTERVAL_SEC;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_LAZY_PERSIST_FILE_SCRUB_INTERVAL_SEC_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_MAX_OBJECTS_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_MAX_OBJECTS_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_NAME_DIR_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_RESOURCE_CHECK_INTERVAL_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_RESOURCE_CHECK_INTERVAL_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_RETRY_CACHE_EXPIRYTIME_MILLIS_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_RETRY_CACHE_EXPIRYTIME_MILLIS_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_RETRY_CACHE_HEAP_PERCENT_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_RETRY_CACHE_HEAP_PERCENT_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_SHARED_EDITS_DIR_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_LEASE_RECHECK_INTERVAL_MS_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_LEASE_RECHECK_INTERVAL_MS_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_MAX_LOCK_HOLD_TO_RELEASE_LEASE_MS_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_MAX_LOCK_HOLD_TO_RELEASE_LEASE_MS_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_PERMISSIONS_ENABLED_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_PERMISSIONS_ENABLED_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_PERMISSIONS_SUPERUSERGROUP_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_PERMISSIONS_SUPERUSERGROUP_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_REPLICATION_DEFAULT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_REPLICATION_KEY;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_SNAPSHOT_DIFF_LISTING_LIMIT;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_SNAPSHOT_DIFF_LISTING_LIMIT_DEFAULT;
import static org.apache.hadoop.hdfs.DFSUtil.isParentEntry;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.commons.text.CaseUtils;
import org.apache.hadoop.hdfs.protocol.ECTopologyVerifierResult;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
import org.apache.hadoop.hdfs.protocol.HdfsLocatedFileStatus;
import org.apache.hadoop.hdfs.protocol.SnapshotStatus;
import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_STORAGE_POLICY_ENABLED_KEY;
import static org.apache.hadoop.hdfs.server.namenode.FSDirStatAndListingOp.*;
import static org.apache.hadoop.ha.HAServiceProtocol.HAServiceState.ACTIVE;
import static org.apache.hadoop.ha.HAServiceProtocol.HAServiceState.STANDBY;
import static org.apache.hadoop.ha.HAServiceProtocol.HAServiceState.OBSERVER;
import org.apache.hadoop.hdfs.protocol.ErasureCodingPolicyInfo;
import org.apache.hadoop.thirdparty.com.google.common.collect.Maps;
import org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotDeletionGc;
import org.apache.hadoop.thirdparty.protobuf.ByteString;
import org.apache.hadoop.hdfs.protocol.BatchedDirectoryListing;
import org.apache.hadoop.hdfs.protocol.HdfsPartialListing;
import org.apache.hadoop.hdfs.protocol.OpenFilesIterator.OpenFilesType;
import org.apache.hadoop.hdfs.protocol.ReplicatedBlockStats;
import org.apache.hadoop.hdfs.protocol.ECBlockGroupStats;
import org.apache.hadoop.hdfs.protocol.OpenFileEntry;
import org.apache.hadoop.hdfs.protocol.ZoneReencryptionStatus;
import org.apache.hadoop.hdfs.protocol.SnapshotDiffReportListing;
import org.apache.hadoop.hdfs.protocol.SnapshotDiffReport;
import org.apache.hadoop.hdfs.server.common.ECTopologyVerifier;
import org.apache.hadoop.hdfs.server.namenode.metrics.ReplicatedBlocksMBean;
import org.apache.hadoop.hdfs.server.protocol.SlowDiskReports;
import org.apache.hadoop.ipc.ObserverRetryOnActiveException;
import org.apache.hadoop.util.Time;
import org.apache.hadoop.util.Daemon;
import org.apache.hadoop.util.DataChecksum;
import org.apache.hadoop.util.ReflectionUtils;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.VersionInfo;
import static org.apache.hadoop.util.Time.now;
import static org.apache.hadoop.util.Time.monotonicNow;
import static org.apache.hadoop.hdfs.server.namenode.top.metrics.TopMetrics.TOPMETRICS_METRICS_SOURCE_NAME;
import java.io.BufferedWriter;
import java.io.DataInput;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.lang.management.ManagementFactory;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.URI;
import java.nio.file.Files;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.TreeMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.ReentrantLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import java.util.function.Supplier;
import javax.annotation.Nonnull;
import javax.management.NotCompliantMBeanException;
import javax.management.ObjectName;
import javax.management.StandardMBean;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.impl.Log4JLogger;
import org.apache.hadoop.HadoopIllegalArgumentException;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.crypto.CryptoProtocolVersion;
import org.apache.hadoop.crypto.key.KeyProvider.Metadata;
import org.apache.hadoop.crypto.key.KeyProviderCryptoExtension;
import org.apache.hadoop.hdfs.AddBlockFlag;
import org.apache.hadoop.fs.BatchedRemoteIterator.BatchedListEntries;
import org.apache.hadoop.fs.CacheFlag;
import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
import org.apache.hadoop.fs.ContentSummary;
import org.apache.hadoop.fs.CreateFlag;
import org.apache.hadoop.fs.FileEncryptionInfo;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FsServerDefaults;
import org.apache.hadoop.fs.InvalidPathException;
import org.apache.hadoop.fs.Options;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.StorageType;
import org.apache.hadoop.fs.UnresolvedLinkException;
import org.apache.hadoop.fs.XAttr;
import org.apache.hadoop.fs.XAttrSetFlag;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.permission.PermissionStatus;
import org.apache.hadoop.fs.QuotaUsage;
import org.apache.hadoop.ha.HAServiceProtocol.HAServiceState;
import org.apache.hadoop.ha.ServiceFailedException;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.DFSUtilClient;
import org.apache.hadoop.hdfs.HAUtil;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.UnknownCryptoProtocolVersionException;
import org.apache.hadoop.hdfs.protocol.AddErasureCodingPolicyResponse;
import org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.BlockType;
import org.apache.hadoop.hdfs.protocol.BlockStoragePolicy;
import org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry;
import org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo;
import org.apache.hadoop.hdfs.protocol.CachePoolEntry;
import org.apache.hadoop.hdfs.protocol.CachePoolInfo;
import org.apache.hadoop.hdfs.protocol.ClientProtocol;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo.DatanodeInfoBuilder;
import org.apache.hadoop.hdfs.protocol.DirectoryListing;
import org.apache.hadoop.hdfs.protocol.ErasureCodingPolicy;
import org.apache.hadoop.hdfs.protocol.EncryptionZone;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.protocol.HdfsConstants.DatanodeReportType;
import org.apache.hadoop.hdfs.protocol.HdfsConstants.ReencryptAction;
import org.apache.hadoop.hdfs.protocol.HdfsConstants.SafeModeAction;
import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
import org.apache.hadoop.hdfs.protocol.LastBlockWithStatus;
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
import org.apache.hadoop.hdfs.protocol.RecoveryInProgressException;
import org.apache.hadoop.hdfs.protocol.RollingUpgradeException;
import org.apache.hadoop.hdfs.protocol.RollingUpgradeInfo;
import org.apache.hadoop.hdfs.protocol.SnapshotException;
import org.apache.hadoop.hdfs.protocol.SnapshottableDirectoryStatus;
import org.apache.hadoop.hdfs.protocol.datatransfer.ReplaceDatanodeOnFailure;
import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.BatchedListingKeyProto;
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenSecretManager;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenSecretManager.SecretManagerState;
import org.apache.hadoop.hdfs.server.blockmanagement.BlockCollection;
import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
import org.apache.hadoop.hdfs.server.blockmanagement.BlockManager;
import org.apache.hadoop.hdfs.server.blockmanagement.BlockUnderConstructionFeature;
import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor;
import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager;
import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeStatistics;
import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeStorageInfo;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.BlockUCState;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.NamenodeRole;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.RollingUpgradeStartupOption;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.StartupOption;
import org.apache.hadoop.hdfs.server.common.Storage;
import org.apache.hadoop.hdfs.server.common.Storage.StorageDirType;
import org.apache.hadoop.hdfs.server.common.Storage.StorageDirectory;
import org.apache.hadoop.hdfs.server.common.Util;
import org.apache.hadoop.hdfs.server.namenode.FSDirEncryptionZoneOp.EncryptionKeyInfo;
import org.apache.hadoop.hdfs.server.namenode.FSDirectory.DirOp;
import org.apache.hadoop.hdfs.server.namenode.FsImageProto.SecretManagerSection;
import org.apache.hadoop.hdfs.server.namenode.INode.BlocksMapUpdateInfo;
import org.apache.hadoop.hdfs.server.namenode.JournalSet.JournalAndStream;
import org.apache.hadoop.hdfs.server.namenode.LeaseManager.Lease;
import org.apache.hadoop.hdfs.server.namenode.NNStorage.NameNodeFile;
import org.apache.hadoop.hdfs.server.namenode.NameNode.OperationCategory;
import org.apache.hadoop.hdfs.server.namenode.NameNodeLayoutVersion.Feature;
import org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer;
import org.apache.hadoop.hdfs.server.namenode.ha.HAContext;
import org.apache.hadoop.hdfs.server.namenode.ha.StandbyCheckpointer;
import org.apache.hadoop.hdfs.server.namenode.metrics.ECBlockGroupsMBean;
import org.apache.hadoop.hdfs.server.namenode.metrics.FSNamesystemMBean;
import org.apache.hadoop.hdfs.server.namenode.metrics.NameNodeMetrics;
import org.apache.hadoop.hdfs.server.namenode.snapshot.DirectorySnapshottableFeature;
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
import org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotManager;
import org.apache.hadoop.hdfs.server.namenode.startupprogress.Phase;
import org.apache.hadoop.hdfs.server.namenode.startupprogress.StartupProgress;
import org.apache.hadoop.hdfs.server.namenode.startupprogress.Step;
import org.apache.hadoop.hdfs.server.namenode.startupprogress.StepType;
import org.apache.hadoop.hdfs.server.namenode.top.TopAuditLogger;
import org.apache.hadoop.hdfs.server.namenode.top.TopConf;
import org.apache.hadoop.hdfs.server.namenode.top.metrics.TopMetrics;
import org.apache.hadoop.hdfs.server.namenode.top.window.RollingWindowManager;
import org.apache.hadoop.hdfs.server.protocol.BlocksWithLocations;
import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand;
import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
import org.apache.hadoop.hdfs.server.protocol.DatanodeStorageReport;
import org.apache.hadoop.hdfs.server.protocol.HeartbeatResponse;
import org.apache.hadoop.hdfs.server.protocol.NNHAStatusHeartbeat;
import org.apache.hadoop.hdfs.server.protocol.NamenodeCommand;
import org.apache.hadoop.hdfs.server.protocol.NamenodeRegistration;
import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
import org.apache.hadoop.hdfs.server.protocol.SlowPeerReports;
import org.apache.hadoop.hdfs.server.protocol.StorageReceivedDeletedBlocks;
import org.apache.hadoop.hdfs.server.protocol.StorageReport;
import org.apache.hadoop.hdfs.server.protocol.VolumeFailureSummary;
import org.apache.hadoop.hdfs.util.LightWeightHashSet;
import org.apache.hadoop.hdfs.web.JsonUtil;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.ipc.CallerContext;
import org.apache.hadoop.ipc.RemoteException;
import org.apache.hadoop.ipc.RetriableException;
import org.apache.hadoop.ipc.RetryCache;
import org.apache.hadoop.ipc.Server;
import org.apache.hadoop.ipc.StandbyException;
import org.apache.hadoop.metrics2.annotation.Metric;
import org.apache.hadoop.metrics2.annotation.Metrics;
import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
import org.apache.hadoop.metrics2.lib.MetricsRegistry;
import org.apache.hadoop.metrics2.lib.MutableRatesWithAggregation;
import org.apache.hadoop.metrics2.util.MBeans;
import org.apache.hadoop.net.Node;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod;
import org.apache.hadoop.security.token.SecretManager.InvalidToken;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.security.token.TokenIdentifier;
import org.apache.hadoop.security.token.delegation.DelegationKey;
import org.apache.hadoop.util.Lists;
import org.apache.log4j.Logger;
import org.apache.log4j.Appender;
import org.apache.log4j.AsyncAppender;
import org.eclipse.jetty.util.ajax.JSON;
import org.apache.hadoop.classification.VisibleForTesting;
import org.apache.hadoop.thirdparty.com.google.common.base.Charsets;
import org.apache.hadoop.util.Preconditions;
import org.apache.hadoop.thirdparty.com.google.common.collect.ImmutableMap;
import org.apache.hadoop.thirdparty.com.google.common.util.concurrent.ThreadFactoryBuilder;
import org.slf4j.LoggerFactory;
/**
* FSNamesystem is a container of both transient
* and persisted name-space state, and does all the book-keeping
* work on a NameNode.
*
* Its roles are briefly described below:
*
* 1) Is the container for BlockManager, DatanodeManager,
* DelegationTokens, LeaseManager, etc. services.
* 2) RPC calls that modify or inspect the name-space
* should get delegated here.
* 3) Anything that touches only blocks (eg. block reports),
* it delegates to BlockManager.
* 4) Anything that touches only file information (eg. permissions, mkdirs),
* it delegates to FSDirectory.
* 5) Anything that crosses two of the above components should be
* coordinated here.
* 6) Logs mutations to FSEditLog.
*
* This class and its contents keep:
*
* 1) Valid fsname {@literal -->} blocklist (kept on disk, logged)
* 2) Set of all valid blocks (inverted #1)
* 3) block {@literal -->} machinelist (kept in memory, rebuilt dynamically
* from reports)
* 4) machine {@literal -->} blocklist (inverted #2)
* 5) LRU cache of updated-heartbeat machines
*/
@InterfaceAudience.Private
@Metrics(context="dfs")
public class FSNamesystem implements Namesystem, FSNamesystemMBean,
NameNodeMXBean, ReplicatedBlocksMBean, ECBlockGroupsMBean {
public static final org.slf4j.Logger LOG = LoggerFactory
.getLogger(FSNamesystem.class.getName());
// The following are private configurations
public static final String DFS_NAMENODE_SNAPSHOT_TRASHROOT_ENABLED =
"dfs.namenode.snapshot.trashroot.enabled";
public static final boolean DFS_NAMENODE_SNAPSHOT_TRASHROOT_ENABLED_DEFAULT
= false;
private static final FsPermission SHARED_TRASH_PERMISSION =
new FsPermission(FsAction.ALL, FsAction.ALL, FsAction.ALL, true);
private final MetricsRegistry registry = new MetricsRegistry("FSNamesystem");
@Metric final MutableRatesWithAggregation detailedLockHoldTimeMetrics =
registry.newRatesWithAggregation("detailedLockHoldTimeMetrics");
private final String contextFieldSeparator;
boolean isAuditEnabled() {
return (!isDefaultAuditLogger || auditLog.isInfoEnabled())
&& !auditLoggers.isEmpty();
}
void logAuditEvent(boolean succeeded, String cmd, String src)
throws IOException {
logAuditEvent(succeeded, cmd, src, null, null);
}
private void logAuditEvent(boolean succeeded, String cmd, String src,
String dst, FileStatus stat) throws IOException {
if (isAuditEnabled() && isExternalInvocation()) {
logAuditEvent(succeeded, NameNode.getRemoteUser(), Server.getRemoteIp(),
cmd, src, dst, stat);
}
}
private void logAuditEvent(boolean succeeded, String cmd, String src,
HdfsFileStatus stat) throws IOException {
if (!isAuditEnabled() || !isExternalInvocation()) {
return;
}
FileStatus status = null;
if (stat != null) {
Path symlink = stat.isSymlink()
? new Path(DFSUtilClient.bytes2String(stat.getSymlinkInBytes()))
: null;
Path path = new Path(src);
status = new FileStatus(stat.getLen(), stat.isDirectory(),
stat.getReplication(), stat.getBlockSize(),
stat.getModificationTime(),
stat.getAccessTime(), stat.getPermission(), stat.getOwner(),
stat.getGroup(), symlink, path);
}
logAuditEvent(succeeded, cmd, src, null, status);
}
private void logAuditEvent(boolean succeeded,
UserGroupInformation ugi, InetAddress addr, String cmd, String src,
String dst, FileStatus status) {
final String ugiStr = ugi.toString();
for (AuditLogger logger : auditLoggers) {
if (logger instanceof HdfsAuditLogger) {
HdfsAuditLogger hdfsLogger = (HdfsAuditLogger) logger;
if (auditLogWithRemotePort) {
appendClientPortToCallerContextIfAbsent();
}
hdfsLogger.logAuditEvent(succeeded, ugiStr, addr, cmd, src, dst,
status, CallerContext.getCurrent(), ugi, dtSecretManager);
} else {
logger.logAuditEvent(succeeded, ugiStr, addr, cmd, src, dst, status);
}
}
}
private void appendClientPortToCallerContextIfAbsent() {
final CallerContext ctx = CallerContext.getCurrent();
if (isClientPortInfoAbsent(ctx)) {
String origContext = ctx == null ? null : ctx.getContext();
byte[] origSignature = ctx == null ? null : ctx.getSignature();
CallerContext.setCurrent(
new CallerContext.Builder(origContext, contextFieldSeparator)
.append(CallerContext.CLIENT_PORT_STR, String.valueOf(Server.getRemotePort()))
.setSignature(origSignature)
.build());
}
}
private boolean isClientPortInfoAbsent(CallerContext ctx){
return ctx == null || ctx.getContext() == null
|| !ctx.getContext().contains(CallerContext.CLIENT_PORT_STR);
}
/**
* Logger for audit events, noting successful FSNamesystem operations. Emits
* to FSNamesystem.audit at INFO. Each event causes a set of tab-separated
* <code>key=value</code> pairs to be written for the following properties:
* <code>
* ugi=<ugi in RPC>
* ip=<remote IP>
* cmd=<command>
* src=<src path>
* dst=<dst path (optional)>
* perm=<permissions (optional)>
* </code>
*/
public static final Log auditLog = LogFactory.getLog(
FSNamesystem.class.getName() + ".audit");
private final int maxCorruptFileBlocksReturn;
private final boolean isPermissionEnabled;
private final boolean isStoragePolicyEnabled;
private final boolean isStoragePolicySuperuserOnly;
private final UserGroupInformation fsOwner;
private final String supergroup;
private final boolean standbyShouldCheckpoint;
private final boolean isSnapshotTrashRootEnabled;
private final int snapshotDiffReportLimit;
/**
* Whether enable checkOperation when call getBlocks.
* It is enabled by default.
*/
private final boolean isGetBlocksCheckOperationEnabled;
/** Interval between each check of lease to release. */
private final long leaseRecheckIntervalMs;
/** Maximum time the lock is hold to release lease. */
private final long maxLockHoldToReleaseLeaseMs;
// Batch size for open files response
private final int maxListOpenFilesResponses;
private final boolean allowOwnerSetQuota;
// Scan interval is not configurable.
private static final long DELEGATION_TOKEN_REMOVER_SCAN_INTERVAL =
TimeUnit.MILLISECONDS.convert(1, TimeUnit.HOURS);
final DelegationTokenSecretManager dtSecretManager;
private final boolean alwaysUseDelegationTokensForTests;
private static final Step STEP_AWAITING_REPORTED_BLOCKS =
new Step(StepType.AWAITING_REPORTED_BLOCKS);
// Tracks whether the default audit logger is the only configured audit
// logger; this allows isAuditEnabled() to return false in case the
// underlying logger is disabled, and avoid some unnecessary work.
private final boolean isDefaultAuditLogger;
private final List<AuditLogger> auditLoggers;
private final boolean auditLogWithRemotePort;
/** The namespace tree. */
FSDirectory dir;
private BlockManager blockManager;
private final SnapshotManager snapshotManager;
private final SnapshotDeletionGc snapshotDeletionGc;
private final CacheManager cacheManager;
private final DatanodeStatistics datanodeStatistics;
private String nameserviceId;
private volatile RollingUpgradeInfo rollingUpgradeInfo = null;
/**
* A flag that indicates whether the checkpointer should checkpoint a rollback
* fsimage. The edit log tailer sets this flag. The checkpoint will create a
* rollback fsimage if the flag is true, and then change the flag to false.
*/
private volatile boolean needRollbackFsImage;
final LeaseManager leaseManager = new LeaseManager(this);
Daemon nnrmthread = null; // NamenodeResourceMonitor thread
Daemon nnEditLogRoller = null; // NameNodeEditLogRoller thread
// A daemon to periodically clean up corrupt lazyPersist files
// from the name space.
Daemon lazyPersistFileScrubber = null;
/**
* Timestamp marking the end time of {@link #lazyPersistFileScrubber}'s full
* cycle. This value can be checked by the Junit tests to verify that the
* {@link #lazyPersistFileScrubber} has run at least one full iteration.
*/
private final AtomicLong lazyPersistFileScrubberTS = new AtomicLong(0);
// Executor to warm up EDEK cache
private ExecutorService edekCacheLoader = null;
private final int edekCacheLoaderDelay;
private final int edekCacheLoaderInterval;
/**
* When an active namenode will roll its own edit log, in # edits
*/
private final long editLogRollerThreshold;
/**
* Check interval of an active namenode's edit log roller thread
*/
private final int editLogRollerInterval;
/**
* How frequently we scan and unlink corrupt lazyPersist files.
* (In seconds)
*/
private final int lazyPersistFileScrubIntervalSec;
private volatile boolean hasResourcesAvailable = false;
private volatile boolean fsRunning = true;
/** The start time of the namesystem. */
private final long startTime = now();
/** The interval of namenode checking for the disk space availability */
private final long resourceRecheckInterval;
// The actual resource checker instance.
NameNodeResourceChecker nnResourceChecker;
private final FsServerDefaults serverDefaults;
private final ReplaceDatanodeOnFailure dtpReplaceDatanodeOnFailure;
private final long maxFsObjects; // maximum number of fs objects
private final long minBlockSize; // minimum block size
final long maxBlocksPerFile; // maximum # of blocks per file
// Maximum number of paths that can be listed per batched call.
private final int batchedListingLimit;
private final int numCommittedAllowed;
/** Lock to protect FSNamesystem. */
private final FSNamesystemLock fsLock;
/**
* Checkpoint lock to protect FSNamesystem modification on standby NNs.
* Unlike fsLock, it does not affect block updates. On active NNs, this lock
* does not provide proper protection, because there are operations that
* modify both block and name system state. Even on standby, fsLock is
* used when block state changes need to be blocked.
*/
private final ReentrantLock cpLock;
/**
* Used when this NN is in standby or observer state to read from the
* shared edit log.
*/
private EditLogTailer editLogTailer = null;
/**
* Used when this NN is in standby state to perform checkpoints.
*/
private StandbyCheckpointer standbyCheckpointer;
/**
* Reference to the NN's HAContext object. This is only set once
* {@link #startCommonServices(Configuration, HAContext)} is called.
*/
private HAContext haContext;
private final boolean haEnabled;
/**
* Whether the namenode is in the middle of starting the active service
*/
private volatile boolean startingActiveService = false;
private final RetryCache retryCache;
private KeyProviderCryptoExtension provider = null;
private volatile boolean imageLoaded = false;
private final Condition cond;
private final FSImage fsImage;
private final TopConf topConf;
private TopMetrics topMetrics;
private INodeAttributeProvider inodeAttributeProvider;
/**
* If the NN is in safemode, and not due to manual / low resources, we
* assume it must be because of startup. If the NN had low resources during
* startup, we assume it came out of startup safemode and it is now in low
* resources safemode.
*/
private boolean manualSafeMode = false;
private boolean resourceLowSafeMode = false;
private String nameNodeHostName = null;
/**
* HDFS-14497: Concurrency control when many metaSave request to write
* meta to same out stream after switch to read lock.
*/
private final Object metaSaveLock = new Object();
private final MessageDigest digest;
/**
* Notify that loading of this FSDirectory is complete, and
* it is imageLoaded for use
*/
void imageLoadComplete() {
Preconditions.checkState(!imageLoaded, "FSDirectory already loaded");
setImageLoaded();
}
void setImageLoaded() {
if(imageLoaded) return;
writeLock();
try {
setImageLoaded(true);
dir.markNameCacheInitialized();
cond.signalAll();
} finally {
writeUnlock("setImageLoaded");
}
}
//This is for testing purposes only
@VisibleForTesting
boolean isImageLoaded() {
return imageLoaded;
}
// exposed for unit tests
protected void setImageLoaded(boolean flag) {
imageLoaded = flag;
}
/**
* Clear all loaded data
*/
void clear() {
dir.reset();
dtSecretManager.reset();
leaseManager.removeAllLeases();
snapshotManager.clearSnapshottableDirs();
cacheManager.clear();
setImageLoaded(false);
blockManager.clear();
ErasureCodingPolicyManager.getInstance().clear();
}
@VisibleForTesting
LeaseManager getLeaseManager() {
return leaseManager;
}
/**
* Used as ad hoc to check the time stamp of the last full cycle of {@link
* #lazyPersistFileScrubber} daemon. This is used by the Junit tests to block
* until {@link #lazyPersistFileScrubberTS} is updated.
*
* @return the current {@link #lazyPersistFileScrubberTS} if {@link
* #lazyPersistFileScrubber} is not null.
*/
@VisibleForTesting
public long getLazyPersistFileScrubberTS() {
return lazyPersistFileScrubber == null ? -1
: lazyPersistFileScrubberTS.get();
}
public boolean isHaEnabled() {
return haEnabled;
}
/**
* Check the supplied configuration for correctness.
* @param conf Supplies the configuration to validate.
* @throws IOException if the configuration could not be queried.
* @throws IllegalArgumentException if the configuration is invalid.
*/
private static void checkConfiguration(Configuration conf)
throws IOException {
final Collection<URI> namespaceDirs =
FSNamesystem.getNamespaceDirs(conf);
final Collection<URI> editsDirs =
FSNamesystem.getNamespaceEditsDirs(conf);
final Collection<URI> requiredEditsDirs =
FSNamesystem.getRequiredNamespaceEditsDirs(conf);
final Collection<URI> sharedEditsDirs =
FSNamesystem.getSharedEditsDirs(conf);
for (URI u : requiredEditsDirs) {
if (u.toString().compareTo(
DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_DEFAULT) == 0) {
continue;
}
// Each required directory must also be in editsDirs or in
// sharedEditsDirs.
if (!editsDirs.contains(u) &&
!sharedEditsDirs.contains(u)) {
throw new IllegalArgumentException("Required edits directory " + u
+ " not found: "
+ DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_KEY + "=" + editsDirs + "; "
+ DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_REQUIRED_KEY
+ "=" + requiredEditsDirs + "; "
+ DFSConfigKeys.DFS_NAMENODE_SHARED_EDITS_DIR_KEY
+ "=" + sharedEditsDirs);
}
}
if (namespaceDirs.size() == 1) {
LOG.warn("Only one image storage directory ("
+ DFS_NAMENODE_NAME_DIR_KEY + ") configured. Beware of data loss"
+ " due to lack of redundant storage directories!");
}
if (editsDirs.size() == 1) {
LOG.warn("Only one namespace edits storage directory ("
+ DFS_NAMENODE_EDITS_DIR_KEY + ") configured. Beware of data loss"
+ " due to lack of redundant storage directories!");
}
}
/**
* Instantiates an FSNamesystem loaded from the image and edits
* directories specified in the passed Configuration.
*
* @param conf the Configuration which specifies the storage directories
* from which to load
* @return an FSNamesystem which contains the loaded namespace
* @throws IOException if loading fails
*/
static FSNamesystem loadFromDisk(Configuration conf) throws IOException {
checkConfiguration(conf);
FSImage fsImage = new FSImage(conf,
FSNamesystem.getNamespaceDirs(conf),
FSNamesystem.getNamespaceEditsDirs(conf));
FSNamesystem namesystem = new FSNamesystem(conf, fsImage, false);
StartupOption startOpt = NameNode.getStartupOption(conf);
if (startOpt == StartupOption.RECOVER) {
namesystem.setSafeMode(SafeModeAction.SAFEMODE_ENTER);
}
long loadStart = monotonicNow();
try {
namesystem.loadFSImage(startOpt);
} catch (IOException ioe) {
LOG.warn("Encountered exception loading fsimage", ioe);
fsImage.close();
throw ioe;
}
long timeTakenToLoadFSImage = monotonicNow() - loadStart;
LOG.info("Finished loading FSImage in " + timeTakenToLoadFSImage + " msecs");
NameNodeMetrics nnMetrics = NameNode.getNameNodeMetrics();
if (nnMetrics != null) {
nnMetrics.setFsImageLoadTime((int) timeTakenToLoadFSImage);
}
namesystem.getFSDirectory().createReservedStatuses(namesystem.getCTime());
return namesystem;
}
FSNamesystem(Configuration conf, FSImage fsImage) throws IOException {
this(conf, fsImage, false);
}
/**
* Create an FSNamesystem associated with the specified image.
*
* Note that this does not load any data off of disk -- if you would
* like that behavior, use {@link #loadFromDisk(Configuration)}
*
* @param conf configuration
* @param fsImage The FSImage to associate with
* @param ignoreRetryCache Whether or not should ignore the retry cache setup
* step. For Secondary NN this should be set to true.
* @throws IOException on bad configuration
*/
FSNamesystem(Configuration conf, FSImage fsImage, boolean ignoreRetryCache)
throws IOException {
provider = DFSUtil.createKeyProviderCryptoExtension(conf);
LOG.info("KeyProvider: " + provider);
if (conf.getBoolean(DFS_NAMENODE_AUDIT_LOG_ASYNC_KEY,
DFS_NAMENODE_AUDIT_LOG_ASYNC_DEFAULT)) {
LOG.info("Enabling async auditlog");
enableAsyncAuditLog(conf);
}
auditLogWithRemotePort =
conf.getBoolean(DFS_NAMENODE_AUDIT_LOG_WITH_REMOTE_PORT_KEY,
DFS_NAMENODE_AUDIT_LOG_WITH_REMOTE_PORT_DEFAULT);
this.contextFieldSeparator =
conf.get(HADOOP_CALLER_CONTEXT_SEPARATOR_KEY,
HADOOP_CALLER_CONTEXT_SEPARATOR_DEFAULT);
fsLock = new FSNamesystemLock(conf, detailedLockHoldTimeMetrics);
cond = fsLock.newWriteLockCondition();
cpLock = new ReentrantLock();
this.fsImage = fsImage;
try {
resourceRecheckInterval = conf.getLong(
DFS_NAMENODE_RESOURCE_CHECK_INTERVAL_KEY,
DFS_NAMENODE_RESOURCE_CHECK_INTERVAL_DEFAULT);
this.fsOwner = UserGroupInformation.getCurrentUser();
this.supergroup = conf.get(DFS_PERMISSIONS_SUPERUSERGROUP_KEY,
DFS_PERMISSIONS_SUPERUSERGROUP_DEFAULT);
this.isPermissionEnabled = conf.getBoolean(DFS_PERMISSIONS_ENABLED_KEY,
DFS_PERMISSIONS_ENABLED_DEFAULT);
this.isStoragePolicyEnabled =
conf.getBoolean(DFS_STORAGE_POLICY_ENABLED_KEY,
DFS_STORAGE_POLICY_ENABLED_DEFAULT);
this.isStoragePolicySuperuserOnly =
conf.getBoolean(DFS_STORAGE_POLICY_PERMISSIONS_SUPERUSER_ONLY_KEY,
DFS_STORAGE_POLICY_PERMISSIONS_SUPERUSER_ONLY_DEFAULT);
this.snapshotDiffReportLimit =
conf.getInt(DFS_NAMENODE_SNAPSHOT_DIFF_LISTING_LIMIT,
DFS_NAMENODE_SNAPSHOT_DIFF_LISTING_LIMIT_DEFAULT);
LOG.info("fsOwner = " + fsOwner);
LOG.info("supergroup = " + supergroup);
LOG.info("isPermissionEnabled = " + isPermissionEnabled);
LOG.info("isStoragePolicyEnabled = " + isStoragePolicyEnabled);
// block allocation has to be persisted in HA using a shared edits directory
// so that the standby has up-to-date namespace information
nameserviceId = DFSUtil.getNamenodeNameServiceId(conf);
this.haEnabled = HAUtil.isHAEnabled(conf, nameserviceId);
// Sanity check the HA-related config.
if (nameserviceId != null) {
LOG.info("Determined nameservice ID: " + nameserviceId);
}
LOG.info("HA Enabled: " + haEnabled);
if (!haEnabled && HAUtil.usesSharedEditsDir(conf)) {
LOG.warn("Configured NNs:\n" + DFSUtil.nnAddressesAsString(conf));
throw new IOException("Invalid configuration: a shared edits dir " +
"must not be specified if HA is not enabled.");
}
// block manager needs the haEnabled initialized
this.blockManager = new BlockManager(this, haEnabled, conf);
this.datanodeStatistics = blockManager.getDatanodeManager().getDatanodeStatistics();
// Get the checksum type from config
String checksumTypeStr = conf.get(DFS_CHECKSUM_TYPE_KEY,
DFS_CHECKSUM_TYPE_DEFAULT);
this.isSnapshotTrashRootEnabled = conf.getBoolean(
DFS_NAMENODE_SNAPSHOT_TRASHROOT_ENABLED,
DFS_NAMENODE_SNAPSHOT_TRASHROOT_ENABLED_DEFAULT);
DataChecksum.Type checksumType;
try {
checksumType = DataChecksum.Type.valueOf(checksumTypeStr);
} catch (IllegalArgumentException iae) {
throw new IOException("Invalid checksum type in "
+ DFS_CHECKSUM_TYPE_KEY + ": " + checksumTypeStr);
}
try {
digest = MessageDigest.getInstance("MD5");
} catch (NoSuchAlgorithmException e) {
throw new IOException("Algorithm 'MD5' not found");
}
this.serverDefaults = new FsServerDefaults(
conf.getLongBytes(DFS_BLOCK_SIZE_KEY, DFS_BLOCK_SIZE_DEFAULT),
conf.getInt(DFS_BYTES_PER_CHECKSUM_KEY, DFS_BYTES_PER_CHECKSUM_DEFAULT),
conf.getInt(DFS_CLIENT_WRITE_PACKET_SIZE_KEY, DFS_CLIENT_WRITE_PACKET_SIZE_DEFAULT),
(short) conf.getInt(DFS_REPLICATION_KEY, DFS_REPLICATION_DEFAULT),
conf.getInt(IO_FILE_BUFFER_SIZE_KEY, IO_FILE_BUFFER_SIZE_DEFAULT),
conf.getBoolean(DFS_ENCRYPT_DATA_TRANSFER_KEY, DFS_ENCRYPT_DATA_TRANSFER_DEFAULT),
conf.getLong(FS_TRASH_INTERVAL_KEY, FS_TRASH_INTERVAL_DEFAULT),
checksumType,
conf.getTrimmed(
CommonConfigurationKeysPublic.HADOOP_SECURITY_KEY_PROVIDER_PATH,
""),
blockManager.getStoragePolicySuite().getDefaultPolicy().getId(),
isSnapshotTrashRootEnabled);
this.maxFsObjects = conf.getLong(DFS_NAMENODE_MAX_OBJECTS_KEY,
DFS_NAMENODE_MAX_OBJECTS_DEFAULT);
this.minBlockSize = conf.getLongBytes(
DFSConfigKeys.DFS_NAMENODE_MIN_BLOCK_SIZE_KEY,
DFSConfigKeys.DFS_NAMENODE_MIN_BLOCK_SIZE_DEFAULT);
this.maxBlocksPerFile = conf.getLong(DFSConfigKeys.DFS_NAMENODE_MAX_BLOCKS_PER_FILE_KEY,
DFSConfigKeys.DFS_NAMENODE_MAX_BLOCKS_PER_FILE_DEFAULT);
this.batchedListingLimit = conf.getInt(
DFSConfigKeys.DFS_NAMENODE_BATCHED_LISTING_LIMIT,
DFSConfigKeys.DFS_NAMENODE_BATCHED_LISTING_LIMIT_DEFAULT);
Preconditions.checkArgument(
batchedListingLimit > 0,
DFSConfigKeys.DFS_NAMENODE_BATCHED_LISTING_LIMIT +
" must be greater than zero");
this.numCommittedAllowed = conf.getInt(
DFSConfigKeys.DFS_NAMENODE_FILE_CLOSE_NUM_COMMITTED_ALLOWED_KEY,
DFSConfigKeys.DFS_NAMENODE_FILE_CLOSE_NUM_COMMITTED_ALLOWED_DEFAULT);
this.maxCorruptFileBlocksReturn = conf.getInt(
DFSConfigKeys.DFS_NAMENODE_MAX_CORRUPT_FILE_BLOCKS_RETURNED_KEY,
DFSConfigKeys.DFS_NAMENODE_MAX_CORRUPT_FILE_BLOCKS_RETURNED_DEFAULT);
this.dtpReplaceDatanodeOnFailure = ReplaceDatanodeOnFailure.get(conf);
this.standbyShouldCheckpoint = conf.getBoolean(
DFS_HA_STANDBY_CHECKPOINTS_KEY, DFS_HA_STANDBY_CHECKPOINTS_DEFAULT);
// # edit autoroll threshold is a multiple of the checkpoint threshold
this.editLogRollerThreshold = (long)
(conf.getFloat(
DFS_NAMENODE_EDIT_LOG_AUTOROLL_MULTIPLIER_THRESHOLD,
DFS_NAMENODE_EDIT_LOG_AUTOROLL_MULTIPLIER_THRESHOLD_DEFAULT) *
conf.getLong(
DFS_NAMENODE_CHECKPOINT_TXNS_KEY,
DFS_NAMENODE_CHECKPOINT_TXNS_DEFAULT));
this.editLogRollerInterval = conf.getInt(
DFS_NAMENODE_EDIT_LOG_AUTOROLL_CHECK_INTERVAL_MS,
DFS_NAMENODE_EDIT_LOG_AUTOROLL_CHECK_INTERVAL_MS_DEFAULT);