Package org.apache.hadoop.hdfs.server.namenode

Class NameNodeRpcServer

java.lang.Object

org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer

All Implemented Interfaces:

org.apache.hadoop.ha.HAServiceProtocol, org.apache.hadoop.hdfs.protocol.ClientProtocol, org.apache.hadoop.hdfs.protocol.ReconfigurationProtocol, DatanodeLifelineProtocol, DatanodeProtocol, NamenodeProtocol, NamenodeProtocols, org.apache.hadoop.ipc.GenericRefreshProtocol, org.apache.hadoop.ipc.RefreshCallQueueProtocol, org.apache.hadoop.security.authorize.RefreshAuthorizationPolicyProtocol, org.apache.hadoop.security.RefreshUserMappingsProtocol, org.apache.hadoop.tools.GetUserMappingsProtocol

@Private
@VisibleForTesting
public class NameNodeRpcServer
extends java.lang.Object
implements NamenodeProtocols

This class is responsible for handling all of the RPC calls to the NameNode. It is created, started, and stopped by NameNode.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.ha.HAServiceProtocol

org.apache.hadoop.ha.HAServiceProtocol.HAServiceState, org.apache.hadoop.ha.HAServiceProtocol.RequestSource, org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo

Field Summary

Fields

Modifier and Type	Field	Description
protected java.net.InetSocketAddress	clientRpcAddress
protected org.apache.hadoop.ipc.RPC.Server	clientRpcServer	The RPC server that listens to requests from clients
protected FSNamesystem	namesystem
protected NameNode	nn

Fields inherited from interface org.apache.hadoop.hdfs.protocol.ClientProtocol

GET_STATS_BYTES_IN_FUTURE_BLOCKS_IDX, GET_STATS_CAPACITY_IDX, GET_STATS_CORRUPT_BLOCKS_IDX, GET_STATS_LOW_REDUNDANCY_IDX, GET_STATS_MISSING_BLOCKS_IDX, GET_STATS_MISSING_REPL_ONE_BLOCKS_IDX, GET_STATS_PENDING_DELETION_BLOCKS_IDX, GET_STATS_REMAINING_IDX, GET_STATS_UNDER_REPLICATED_IDX, GET_STATS_USED_IDX, STATS_ARRAY_LENGTH, versionID

Fields inherited from interface org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol

DISK_ERROR, DNA_ACCESSKEYUPDATE, DNA_BALANCERBANDWIDTHUPDATE, DNA_BLOCK_STORAGE_MOVEMENT, DNA_CACHE, DNA_DROP_SPS_WORK_COMMAND, DNA_ERASURE_CODING_RECONSTRUCTION, DNA_FINALIZE, DNA_INVALIDATE, DNA_RECOVERBLOCK, DNA_REGISTER, DNA_SHUTDOWN, DNA_TRANSFER, DNA_UNCACHE, DNA_UNKNOWN, FATAL_DISK_ERROR, INVALID_BLOCK, NOTIFY, versionID

Fields inherited from interface org.apache.hadoop.ipc.GenericRefreshProtocol

versionID

Fields inherited from interface org.apache.hadoop.tools.GetUserMappingsProtocol

versionID

Fields inherited from interface org.apache.hadoop.ha.HAServiceProtocol

versionID

Fields inherited from interface org.apache.hadoop.hdfs.server.protocol.NamenodeProtocol

ACT_CHECKPOINT, ACT_SHUTDOWN, ACT_UNKNOWN, FATAL, NOTIFY, versionID

Fields inherited from interface org.apache.hadoop.hdfs.protocol.ReconfigurationProtocol

VERSIONID

Fields inherited from interface org.apache.hadoop.security.authorize.RefreshAuthorizationPolicyProtocol

versionID

Fields inherited from interface org.apache.hadoop.ipc.RefreshCallQueueProtocol

versionID

Fields inherited from interface org.apache.hadoop.security.RefreshUserMappingsProtocol

versionID

Constructor Summary

Constructors

Constructor	Description
NameNodeRpcServer(org.apache.hadoop.conf.Configuration conf, NameNode nn)

Method Summary

Modifier and Type	Method	Description
void	abandonBlock(org.apache.hadoop.hdfs.protocol.ExtendedBlock b, long fileId, java.lang.String src, java.lang.String holder)	The client needs to give up on the block.
org.apache.hadoop.hdfs.protocol.LocatedBlock	addBlock(java.lang.String src, java.lang.String clientName, org.apache.hadoop.hdfs.protocol.ExtendedBlock previous, org.apache.hadoop.hdfs.protocol.DatanodeInfo[] excludedNodes, long fileId, java.lang.String[] favoredNodes, java.util.EnumSet<org.apache.hadoop.hdfs.AddBlockFlag> addBlockFlags)
long	addCacheDirective(org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo path, java.util.EnumSet<org.apache.hadoop.fs.CacheFlag> flags)
void	addCachePool(org.apache.hadoop.hdfs.protocol.CachePoolInfo info)
org.apache.hadoop.hdfs.protocol.AddErasureCodingPolicyResponse[]	addErasureCodingPolicies(org.apache.hadoop.hdfs.protocol.ErasureCodingPolicy[] policies)
void	allowSnapshot(java.lang.String snapshotRoot)
org.apache.hadoop.hdfs.protocol.LastBlockWithStatus	append(java.lang.String src, java.lang.String clientName, org.apache.hadoop.io.EnumSetWritable<org.apache.hadoop.fs.CreateFlag> flag)
void	blockReceivedAndDeleted(DatanodeRegistration nodeReg, java.lang.String poolId, StorageReceivedDeletedBlocks[] receivedAndDeletedBlocks)	blockReceivedAndDeleted() allows the DataNode to tell the NameNode about recently-received and -deleted block data.
DatanodeCommand	blockReport(DatanodeRegistration nodeReg, java.lang.String poolId, StorageBlockReport[] reports, BlockReportContext context)	blockReport() tells the NameNode about all the locally-stored blocks.
DatanodeCommand	cacheReport(DatanodeRegistration nodeReg, java.lang.String poolId, java.util.List<java.lang.Long> blockIds)	Communicates the complete list of locally cached blocks to the NameNode.
void	cancelDelegationToken(org.apache.hadoop.security.token.Token<org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier> token)
void	checkAccess(java.lang.String path, org.apache.hadoop.fs.permission.FsAction mode)
void	commitBlockSynchronization(org.apache.hadoop.hdfs.protocol.ExtendedBlock block, long newgenerationstamp, long newlength, boolean closeFile, boolean deleteblock, org.apache.hadoop.hdfs.protocol.DatanodeID[] newtargets, java.lang.String[] newtargetstorages)	Commit block synchronization in lease recovery
boolean	complete(java.lang.String src, java.lang.String clientName, org.apache.hadoop.hdfs.protocol.ExtendedBlock last, long fileId)
void	concat(java.lang.String trg, java.lang.String[] src)
org.apache.hadoop.hdfs.protocol.HdfsFileStatus	create(java.lang.String src, org.apache.hadoop.fs.permission.FsPermission masked, java.lang.String clientName, org.apache.hadoop.io.EnumSetWritable<org.apache.hadoop.fs.CreateFlag> flag, boolean createParent, short replication, long blockSize, org.apache.hadoop.crypto.CryptoProtocolVersion[] supportedVersions, java.lang.String ecPolicyName, java.lang.String storagePolicy)
void	createEncryptionZone(java.lang.String src, java.lang.String keyName)
java.lang.String	createSnapshot(java.lang.String snapshotRoot, java.lang.String snapshotName)
void	createSymlink(java.lang.String target, java.lang.String link, org.apache.hadoop.fs.permission.FsPermission dirPerms, boolean createParent)
boolean	delete(java.lang.String src, boolean recursive)
void	deleteSnapshot(java.lang.String snapshotRoot, java.lang.String snapshotName)
void	disableErasureCodingPolicy(java.lang.String ecPolicyName)
void	disallowSnapshot(java.lang.String snapshot)
void	enableErasureCodingPolicy(java.lang.String ecPolicyName)
void	endCheckpoint(NamenodeRegistration registration, CheckpointSignature sig)	A request to the active name-node to finalize previously started checkpoint.
void	errorReport(DatanodeRegistration nodeReg, int errorCode, java.lang.String msg)	errorReport() tells the NameNode about something that has gone awry.
void	errorReport(NamenodeRegistration registration, int errorCode, java.lang.String msg)	Report to the active name-node an error occurred on a subordinate node.
void	finalizeUpgrade()
void	fsync(java.lang.String src, long fileId, java.lang.String clientName, long lastBlockLength)
org.apache.hadoop.fs.permission.AclStatus	getAclStatus(java.lang.String src)
org.apache.hadoop.hdfs.protocol.LocatedBlock	getAdditionalDatanode(java.lang.String src, long fileId, org.apache.hadoop.hdfs.protocol.ExtendedBlock blk, org.apache.hadoop.hdfs.protocol.DatanodeInfo[] existings, java.lang.String[] existingStorageIDs, org.apache.hadoop.hdfs.protocol.DatanodeInfo[] excludes, int numAdditionalNodes, java.lang.String clientName)
java.util.Set<java.net.InetSocketAddress>	getAuxiliaryRpcAddresses()
org.apache.hadoop.hdfs.protocol.BatchedDirectoryListing	getBatchedListing(java.lang.String[] srcs, byte[] startAfter, boolean needLocation)
ExportedBlockKeys	getBlockKeys()	Get the current block keys
org.apache.hadoop.hdfs.protocol.LocatedBlocks	getBlockLocations(java.lang.String src, long offset, long length)
BlocksWithLocations	getBlocks(org.apache.hadoop.hdfs.protocol.DatanodeInfo datanode, long size, long minBlockSize, long timeInterval, org.apache.hadoop.fs.StorageType storageType)	Get a list of blocks belonging to datanode whose total size equals size.
org.apache.hadoop.ipc.RPC.Server	getClientRpcServer()	Allow access to the client RPC server for testing
org.apache.hadoop.fs.ContentSummary	getContentSummary(java.lang.String path)
long	getCurrentEditLogTxid()
org.apache.hadoop.hdfs.security.token.block.DataEncryptionKey	getDataEncryptionKey()
org.apache.hadoop.hdfs.protocol.DatanodeInfo[]	getDatanodeReport(org.apache.hadoop.hdfs.protocol.HdfsConstants.DatanodeReportType type)
org.apache.hadoop.hdfs.server.protocol.DatanodeStorageReport[]	getDatanodeStorageReport(org.apache.hadoop.hdfs.protocol.HdfsConstants.DatanodeReportType type)
org.apache.hadoop.security.token.Token<org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier>	getDelegationToken(org.apache.hadoop.io.Text renewer)
org.apache.hadoop.hdfs.protocol.ECBlockGroupStats	getECBlockGroupStats()
org.apache.hadoop.hdfs.protocol.ECTopologyVerifierResult	getECTopologyResultForPolicies(java.lang.String... policyNames)
RemoteEditLogManifest	getEditLogManifest(long sinceTxId)	Return a structure containing details about all edit logs available to be fetched from the NameNode.
org.apache.hadoop.hdfs.inotify.EventBatchList	getEditsFromTxid(long txid)
org.apache.hadoop.fs.Path	getEnclosingRoot(java.lang.String src)
java.util.Map<java.lang.String,java.lang.String>	getErasureCodingCodecs()
org.apache.hadoop.hdfs.protocol.ErasureCodingPolicyInfo[]	getErasureCodingPolicies()
org.apache.hadoop.hdfs.protocol.ErasureCodingPolicy	getErasureCodingPolicy(java.lang.String src)
org.apache.hadoop.hdfs.protocol.EncryptionZone	getEZForPath(java.lang.String src)
org.apache.hadoop.hdfs.protocol.HdfsFileStatus	getFileInfo(java.lang.String src)
org.apache.hadoop.hdfs.protocol.HdfsFileStatus	getFileLinkInfo(java.lang.String src)
java.lang.String[]	getGroupsForUser(java.lang.String user)
org.apache.hadoop.ha.HAServiceProtocol.HAServiceState	getHAServiceState()
java.lang.String	getLinkTarget(java.lang.String path)
org.apache.hadoop.hdfs.protocol.DirectoryListing	getListing(java.lang.String src, byte[] startAfter, boolean needLocation)
org.apache.hadoop.hdfs.protocol.HdfsLocatedFileStatus	getLocatedFileInfo(java.lang.String src, boolean needBlockToken)
long	getMostRecentCheckpointTxId()	Get the transaction ID of the most recent checkpoint.
java.lang.Long	getNextSPSPath()
long	getPreferredBlockSize(java.lang.String filename)
org.apache.hadoop.fs.QuotaUsage	getQuotaUsage(java.lang.String path)
org.apache.hadoop.conf.ReconfigurationTaskStatus	getReconfigurationStatus()
org.apache.hadoop.hdfs.protocol.ReplicatedBlockStats	getReplicatedBlockStats()
java.net.InetSocketAddress	getRpcAddress()
org.apache.hadoop.fs.FsServerDefaults	getServerDefaults()
org.apache.hadoop.ha.HAServiceStatus	getServiceStatus()
org.apache.hadoop.hdfs.protocol.DatanodeInfo[]	getSlowDatanodeReport()
org.apache.hadoop.hdfs.protocol.SnapshotDiffReport	getSnapshotDiffReport(java.lang.String snapshotRoot, java.lang.String earlierSnapshotName, java.lang.String laterSnapshotName)
org.apache.hadoop.hdfs.protocol.SnapshotDiffReportListing	getSnapshotDiffReportListing(java.lang.String snapshotRoot, java.lang.String earlierSnapshotName, java.lang.String laterSnapshotName, byte[] startPath, int index)
org.apache.hadoop.hdfs.protocol.SnapshotStatus[]	getSnapshotListing(java.lang.String snapshotRoot)
org.apache.hadoop.hdfs.protocol.SnapshottableDirectoryStatus[]	getSnapshottableDirListing()
long[]	getStats()
org.apache.hadoop.hdfs.protocol.BlockStoragePolicy[]	getStoragePolicies()
org.apache.hadoop.hdfs.protocol.BlockStoragePolicy	getStoragePolicy(java.lang.String path)
long	getTransactionID()
java.util.List<org.apache.hadoop.fs.XAttr>	getXAttrs(java.lang.String src, java.util.List<org.apache.hadoop.fs.XAttr> xAttrs)
boolean	isFileClosed(java.lang.String src)
boolean	isRollingUpgrade()	return whether the Namenode is rolling upgrade in progress (true) or not (false).
boolean	isUpgradeFinalized()
org.apache.hadoop.fs.BatchedRemoteIterator.BatchedEntries<org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry>	listCacheDirectives(long prevId, org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo filter)
org.apache.hadoop.fs.BatchedRemoteIterator.BatchedEntries<org.apache.hadoop.hdfs.protocol.CachePoolEntry>	listCachePools(java.lang.String prevKey)
org.apache.hadoop.hdfs.protocol.CorruptFileBlocks	listCorruptFileBlocks(java.lang.String path, java.lang.String cookie)
org.apache.hadoop.fs.BatchedRemoteIterator.BatchedEntries<org.apache.hadoop.hdfs.protocol.EncryptionZone>	listEncryptionZones(long prevId)
org.apache.hadoop.fs.BatchedRemoteIterator.BatchedEntries<org.apache.hadoop.hdfs.protocol.OpenFileEntry>	listOpenFiles(long prevId)	Deprecated.
org.apache.hadoop.fs.BatchedRemoteIterator.BatchedEntries<org.apache.hadoop.hdfs.protocol.OpenFileEntry>	listOpenFiles(long prevId, java.util.EnumSet<org.apache.hadoop.hdfs.protocol.OpenFilesIterator.OpenFilesType> openFilesTypes, java.lang.String path)
java.util.List<java.lang.String>	listReconfigurableProperties()
org.apache.hadoop.fs.BatchedRemoteIterator.BatchedEntries<org.apache.hadoop.hdfs.protocol.ZoneReencryptionStatus>	listReencryptionStatus(long prevId)
java.util.List<org.apache.hadoop.fs.XAttr>	listXAttrs(java.lang.String src)
void	metaSave(java.lang.String filename)
boolean	mkdirs(java.lang.String src, org.apache.hadoop.fs.permission.FsPermission masked, boolean createParent)
void	modifyAclEntries(java.lang.String src, java.util.List<org.apache.hadoop.fs.permission.AclEntry> aclSpec)
void	modifyCacheDirective(org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo directive, java.util.EnumSet<org.apache.hadoop.fs.CacheFlag> flags)
void	modifyCachePool(org.apache.hadoop.hdfs.protocol.CachePoolInfo info)
void	monitorHealth()
void	msync()
boolean	recoverLease(java.lang.String src, java.lang.String clientName)
void	reencryptEncryptionZone(java.lang.String zone, org.apache.hadoop.hdfs.protocol.HdfsConstants.ReencryptAction action)
java.util.Collection<org.apache.hadoop.ipc.RefreshResponse>	refresh(java.lang.String identifier, java.lang.String[] args)
void	refreshCallQueue()
void	refreshNodes()
void	refreshServiceAcl()
void	refreshSuperUserGroupsConfiguration()
void	refreshUserToGroupsMappings()
DatanodeRegistration	registerDatanode(DatanodeRegistration nodeReg)	Register Datanode.
NamenodeRegistration	registerSubordinateNamenode(NamenodeRegistration registration)	Register a subordinate name-node like backup node.
void	removeAcl(java.lang.String src)
void	removeAclEntries(java.lang.String src, java.util.List<org.apache.hadoop.fs.permission.AclEntry> aclSpec)
void	removeCacheDirective(long id)
void	removeCachePool(java.lang.String cachePoolName)
void	removeDefaultAcl(java.lang.String src)
void	removeErasureCodingPolicy(java.lang.String ecPolicyName)
void	removeXAttr(java.lang.String src, org.apache.hadoop.fs.XAttr xAttr)
boolean	rename(java.lang.String src, java.lang.String dst)	Deprecated.
void	rename2(java.lang.String src, java.lang.String dst, org.apache.hadoop.fs.Options.Rename... options)
void	renameSnapshot(java.lang.String snapshotRoot, java.lang.String snapshotOldName, java.lang.String snapshotNewName)
long	renewDelegationToken(org.apache.hadoop.security.token.Token<org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier> token)
void	renewLease(java.lang.String clientName, java.util.List<java.lang.String> namespaces)
void	reportBadBlocks(org.apache.hadoop.hdfs.protocol.LocatedBlock[] blocks)	The client has detected an error on the specified located blocks and is reporting them to the server.
boolean	restoreFailedStorage(java.lang.String arg)
CheckpointSignature	rollEditLog()	Closes the current edit log and opens a new one.
long	rollEdits()
org.apache.hadoop.hdfs.protocol.RollingUpgradeInfo	rollingUpgrade(org.apache.hadoop.hdfs.protocol.HdfsConstants.RollingUpgradeAction action)
void	satisfyStoragePolicy(java.lang.String src)
boolean	saveNamespace(long timeWindow, long txGap)
HeartbeatResponse	sendHeartbeat(DatanodeRegistration nodeReg, org.apache.hadoop.hdfs.server.protocol.StorageReport[] report, long dnCacheCapacity, long dnCacheUsed, int xmitsInProgress, int xceiverCount, int failedVolumes, VolumeFailureSummary volumeFailureSummary, boolean requestFullBlockReportLease, org.apache.hadoop.hdfs.server.protocol.SlowPeerReports slowPeers, org.apache.hadoop.hdfs.server.protocol.SlowDiskReports slowDisks)	sendHeartbeat() tells the NameNode that the DataNode is still alive and well.
void	sendLifeline(DatanodeRegistration nodeReg, org.apache.hadoop.hdfs.server.protocol.StorageReport[] report, long dnCacheCapacity, long dnCacheUsed, int xmitsInProgress, int xceiverCount, int failedVolumes, VolumeFailureSummary volumeFailureSummary)
void	setAcl(java.lang.String src, java.util.List<org.apache.hadoop.fs.permission.AclEntry> aclSpec)
void	setBalancerBandwidth(long bandwidth)	Tell all datanodes to use a new, non-persistent bandwidth value for dfs.datanode.balance.bandwidthPerSec.
void	setErasureCodingPolicy(java.lang.String src, java.lang.String ecPolicyName)
void	setOwner(java.lang.String src, java.lang.String username, java.lang.String groupname)
void	setPermission(java.lang.String src, org.apache.hadoop.fs.permission.FsPermission permissions)
void	setQuota(java.lang.String path, long namespaceQuota, long storagespaceQuota, org.apache.hadoop.fs.StorageType type)
boolean	setReplication(java.lang.String src, short replication)
boolean	setSafeMode(org.apache.hadoop.hdfs.protocol.HdfsConstants.SafeModeAction action, boolean isChecked)
void	setStoragePolicy(java.lang.String src, java.lang.String policyName)
void	setTimes(java.lang.String src, long mtime, long atime)
void	setXAttr(java.lang.String src, org.apache.hadoop.fs.XAttr xAttr, java.util.EnumSet<org.apache.hadoop.fs.XAttrSetFlag> flag)
NamenodeCommand	startCheckpoint(NamenodeRegistration registration)	A request to the active name-node to start a checkpoint.
void	startReconfiguration()
void	transitionToActive(org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo req)
void	transitionToObserver(org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo req)
void	transitionToStandby(org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo req)
boolean	truncate(java.lang.String src, long newLength, java.lang.String clientName)
void	unsetErasureCodingPolicy(java.lang.String src)
void	unsetStoragePolicy(java.lang.String src)
org.apache.hadoop.hdfs.protocol.LocatedBlock	updateBlockForPipeline(org.apache.hadoop.hdfs.protocol.ExtendedBlock block, java.lang.String clientName)
void	updatePipeline(java.lang.String clientName, org.apache.hadoop.hdfs.protocol.ExtendedBlock oldBlock, org.apache.hadoop.hdfs.protocol.ExtendedBlock newBlock, org.apache.hadoop.hdfs.protocol.DatanodeID[] newNodes, java.lang.String[] newStorageIDs)
boolean	upgradeStatus()
NamespaceInfo	versionRequest()	Request name-node version and storage information.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

namesystem

protected final FSNamesystem namesystem

nn

protected final NameNode nn

clientRpcServer

protected final org.apache.hadoop.ipc.RPC.Server clientRpcServer

The RPC server that listens to requests from clients

clientRpcAddress

protected final java.net.InetSocketAddress clientRpcAddress

Constructor Detail

NameNodeRpcServer

public NameNodeRpcServer(org.apache.hadoop.conf.Configuration conf,
                         NameNode nn)
                  throws java.io.IOException

Throws:

java.io.IOException

Method Detail

getClientRpcServer

@VisibleForTesting
public org.apache.hadoop.ipc.RPC.Server getClientRpcServer()

Allow access to the client RPC server for testing

getRpcAddress

@VisibleForTesting
public java.net.InetSocketAddress getRpcAddress()

getAuxiliaryRpcAddresses

@VisibleForTesting
public java.util.Set<java.net.InetSocketAddress> getAuxiliaryRpcAddresses()

getBlocks

public BlocksWithLocations getBlocks(org.apache.hadoop.hdfs.protocol.DatanodeInfo datanode,
                                     long size,
                                     long minBlockSize,
                                     long timeInterval,
                                     org.apache.hadoop.fs.StorageType storageType)
                              throws java.io.IOException

Description copied from interface: NamenodeProtocol

Get a list of blocks belonging to datanode whose total size equals size.

Specified by:

getBlocks in interface NamenodeProtocol

Parameters:

datanode - a data node

size - requested size

minBlockSize - each block should be of this minimum Block Size

timeInterval - prefer to get blocks which are belong to the cold files accessed before the time interval

storageType - the given storage type StorageType

Returns:

BlocksWithLocations a list of blocks & their locations

Throws:

java.io.IOException - if size is less than or equal to 0 or datanode does not exist

See Also:

Balancer

getBlockKeys

public ExportedBlockKeys getBlockKeys()
                               throws java.io.IOException

Description copied from interface: NamenodeProtocol

Get the current block keys

Specified by:

getBlockKeys in interface NamenodeProtocol

Returns:

ExportedBlockKeys containing current block keys

Throws:

java.io.IOException

errorReport

public void errorReport(NamenodeRegistration registration,
                        int errorCode,
                        java.lang.String msg)
                 throws java.io.IOException

Description copied from interface: NamenodeProtocol

Report to the active name-node an error occurred on a subordinate node. Depending on the error code the active node may decide to unregister the reporting node.

Specified by:

errorReport in interface NamenodeProtocol

Parameters:

registration - requesting node.

errorCode - indicates the error

msg - free text description of the error

Throws:

java.io.IOException

registerSubordinateNamenode

public NamenodeRegistration registerSubordinateNamenode(NamenodeRegistration registration)
                                                 throws java.io.IOException

Description copied from interface: NamenodeProtocol

Register a subordinate name-node like backup node.

Specified by:

registerSubordinateNamenode in interface NamenodeProtocol

Returns:

NamenodeRegistration of the node, which this node has just registered with.

Throws:

java.io.IOException

startCheckpoint

public NamenodeCommand startCheckpoint(NamenodeRegistration registration)
                                throws java.io.IOException

Description copied from interface: NamenodeProtocol

A request to the active name-node to start a checkpoint. The name-node should decide whether to admit it or reject. The name-node also decides what should be done with the backup node image before and after the checkpoint.

Specified by:

startCheckpoint in interface NamenodeProtocol

Parameters:

registration - the requesting node

Returns:

CheckpointCommand if checkpoint is allowed.

Throws:

java.io.IOException

See Also:

CheckpointCommand, NamenodeCommand, NamenodeProtocol.ACT_SHUTDOWN

endCheckpoint

public void endCheckpoint(NamenodeRegistration registration,
                          CheckpointSignature sig)
                   throws java.io.IOException

Description copied from interface: NamenodeProtocol

A request to the active name-node to finalize previously started checkpoint.

Specified by:

endCheckpoint in interface NamenodeProtocol

Parameters:

registration - the requesting node

sig - CheckpointSignature which identifies the checkpoint.

Throws:

java.io.IOException

getDelegationToken

public org.apache.hadoop.security.token.Token<org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier> getDelegationToken(org.apache.hadoop.io.Text renewer)
                                                                                                                                      throws java.io.IOException

Specified by:

getDelegationToken in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

renewDelegationToken

public long renewDelegationToken(org.apache.hadoop.security.token.Token<org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier> token)
                          throws org.apache.hadoop.security.token.SecretManager.InvalidToken,
                                 java.io.IOException

Specified by:

renewDelegationToken in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

org.apache.hadoop.security.token.SecretManager.InvalidToken

java.io.IOException

cancelDelegationToken

public void cancelDelegationToken(org.apache.hadoop.security.token.Token<org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier> token)
                           throws java.io.IOException

Specified by:

cancelDelegationToken in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getBlockLocations

public org.apache.hadoop.hdfs.protocol.LocatedBlocks getBlockLocations(java.lang.String src,
                                                                       long offset,
                                                                       long length)
                                                                throws java.io.IOException

Specified by:

getBlockLocations in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getServerDefaults

public org.apache.hadoop.fs.FsServerDefaults getServerDefaults()
                                                        throws java.io.IOException

Specified by:

getServerDefaults in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

create

public org.apache.hadoop.hdfs.protocol.HdfsFileStatus create(java.lang.String src,
                                                             org.apache.hadoop.fs.permission.FsPermission masked,
                                                             java.lang.String clientName,
                                                             org.apache.hadoop.io.EnumSetWritable<org.apache.hadoop.fs.CreateFlag> flag,
                                                             boolean createParent,
                                                             short replication,
                                                             long blockSize,
                                                             org.apache.hadoop.crypto.CryptoProtocolVersion[] supportedVersions,
                                                             java.lang.String ecPolicyName,
                                                             java.lang.String storagePolicy)
                                                      throws java.io.IOException

Specified by:

create in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

append

public org.apache.hadoop.hdfs.protocol.LastBlockWithStatus append(java.lang.String src,
                                                                  java.lang.String clientName,
                                                                  org.apache.hadoop.io.EnumSetWritable<org.apache.hadoop.fs.CreateFlag> flag)
                                                           throws java.io.IOException

Specified by:

append in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

recoverLease

public boolean recoverLease(java.lang.String src,
                            java.lang.String clientName)
                     throws java.io.IOException

Specified by:

recoverLease in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

setReplication

public boolean setReplication(java.lang.String src,
                              short replication)
                       throws java.io.IOException

Specified by:

setReplication in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

unsetStoragePolicy

public void unsetStoragePolicy(java.lang.String src)
                        throws java.io.IOException

Specified by:

unsetStoragePolicy in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

setStoragePolicy

public void setStoragePolicy(java.lang.String src,
                             java.lang.String policyName)
                      throws java.io.IOException

Specified by:

setStoragePolicy in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getStoragePolicy

public org.apache.hadoop.hdfs.protocol.BlockStoragePolicy getStoragePolicy(java.lang.String path)
                                                                    throws java.io.IOException

Specified by:

getStoragePolicy in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getStoragePolicies

public org.apache.hadoop.hdfs.protocol.BlockStoragePolicy[] getStoragePolicies()
                                                                        throws java.io.IOException

Specified by:

getStoragePolicies in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

setPermission

public void setPermission(java.lang.String src,
                          org.apache.hadoop.fs.permission.FsPermission permissions)
                   throws java.io.IOException

Specified by:

setPermission in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

setOwner

public void setOwner(java.lang.String src,
                     java.lang.String username,
                     java.lang.String groupname)
              throws java.io.IOException

Specified by:

setOwner in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

addBlock

public org.apache.hadoop.hdfs.protocol.LocatedBlock addBlock(java.lang.String src,
                                                             java.lang.String clientName,
                                                             org.apache.hadoop.hdfs.protocol.ExtendedBlock previous,
                                                             org.apache.hadoop.hdfs.protocol.DatanodeInfo[] excludedNodes,
                                                             long fileId,
                                                             java.lang.String[] favoredNodes,
                                                             java.util.EnumSet<org.apache.hadoop.hdfs.AddBlockFlag> addBlockFlags)
                                                      throws java.io.IOException

Specified by:

addBlock in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getAdditionalDatanode

public org.apache.hadoop.hdfs.protocol.LocatedBlock getAdditionalDatanode(java.lang.String src,
                                                                          long fileId,
                                                                          org.apache.hadoop.hdfs.protocol.ExtendedBlock blk,
                                                                          org.apache.hadoop.hdfs.protocol.DatanodeInfo[] existings,
                                                                          java.lang.String[] existingStorageIDs,
                                                                          org.apache.hadoop.hdfs.protocol.DatanodeInfo[] excludes,
                                                                          int numAdditionalNodes,
                                                                          java.lang.String clientName)
                                                                   throws java.io.IOException

Specified by:

getAdditionalDatanode in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

abandonBlock

public void abandonBlock(org.apache.hadoop.hdfs.protocol.ExtendedBlock b,
                         long fileId,
                         java.lang.String src,
                         java.lang.String holder)
                  throws java.io.IOException

The client needs to give up on the block.

Specified by:

abandonBlock in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

complete

public boolean complete(java.lang.String src,
                        java.lang.String clientName,
                        org.apache.hadoop.hdfs.protocol.ExtendedBlock last,
                        long fileId)
                 throws java.io.IOException

Specified by:

complete in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

reportBadBlocks

public void reportBadBlocks(org.apache.hadoop.hdfs.protocol.LocatedBlock[] blocks)
                     throws java.io.IOException

The client has detected an error on the specified located blocks and is reporting them to the server. For now, the namenode will mark the block as corrupt. In the future we might check the blocks are actually corrupt.

Specified by:

reportBadBlocks in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Specified by:

reportBadBlocks in interface DatanodeProtocol

Throws:

java.io.IOException

updateBlockForPipeline

public org.apache.hadoop.hdfs.protocol.LocatedBlock updateBlockForPipeline(org.apache.hadoop.hdfs.protocol.ExtendedBlock block,
                                                                           java.lang.String clientName)
                                                                    throws java.io.IOException

Specified by:

updateBlockForPipeline in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

updatePipeline

public void updatePipeline(java.lang.String clientName,
                           org.apache.hadoop.hdfs.protocol.ExtendedBlock oldBlock,
                           org.apache.hadoop.hdfs.protocol.ExtendedBlock newBlock,
                           org.apache.hadoop.hdfs.protocol.DatanodeID[] newNodes,
                           java.lang.String[] newStorageIDs)
                    throws java.io.IOException

Specified by:

updatePipeline in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

commitBlockSynchronization

public void commitBlockSynchronization(org.apache.hadoop.hdfs.protocol.ExtendedBlock block,
                                       long newgenerationstamp,
                                       long newlength,
                                       boolean closeFile,
                                       boolean deleteblock,
                                       org.apache.hadoop.hdfs.protocol.DatanodeID[] newtargets,
                                       java.lang.String[] newtargetstorages)
                                throws java.io.IOException

Description copied from interface: DatanodeProtocol

Commit block synchronization in lease recovery

Specified by:

commitBlockSynchronization in interface DatanodeProtocol

Throws:

java.io.IOException

getPreferredBlockSize

public long getPreferredBlockSize(java.lang.String filename)
                           throws java.io.IOException

Specified by:

getPreferredBlockSize in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

rename

@Deprecated
public boolean rename(java.lang.String src,
                      java.lang.String dst)
               throws java.io.IOException

Deprecated.

Specified by:

rename in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

concat

public void concat(java.lang.String trg,
                   java.lang.String[] src)
            throws java.io.IOException

Specified by:

concat in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

rename2

public void rename2(java.lang.String src,
                    java.lang.String dst,
                    org.apache.hadoop.fs.Options.Rename... options)
             throws java.io.IOException

Specified by:

rename2 in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

truncate

public boolean truncate(java.lang.String src,
                        long newLength,
                        java.lang.String clientName)
                 throws java.io.IOException

Specified by:

truncate in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

delete

public boolean delete(java.lang.String src,
                      boolean recursive)
               throws java.io.IOException

Specified by:

delete in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

mkdirs

public boolean mkdirs(java.lang.String src,
                      org.apache.hadoop.fs.permission.FsPermission masked,
                      boolean createParent)
               throws java.io.IOException

Specified by:

mkdirs in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

renewLease

public void renewLease(java.lang.String clientName,
                       java.util.List<java.lang.String> namespaces)
                throws java.io.IOException

Specified by:

renewLease in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getListing

public org.apache.hadoop.hdfs.protocol.DirectoryListing getListing(java.lang.String src,
                                                                   byte[] startAfter,
                                                                   boolean needLocation)
                                                            throws java.io.IOException

Specified by:

getListing in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getBatchedListing

public org.apache.hadoop.hdfs.protocol.BatchedDirectoryListing getBatchedListing(java.lang.String[] srcs,
                                                                                 byte[] startAfter,
                                                                                 boolean needLocation)
                                                                          throws java.io.IOException

Specified by:

getBatchedListing in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getFileInfo

public org.apache.hadoop.hdfs.protocol.HdfsFileStatus getFileInfo(java.lang.String src)
                                                           throws java.io.IOException

Specified by:

getFileInfo in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getLocatedFileInfo

public org.apache.hadoop.hdfs.protocol.HdfsLocatedFileStatus getLocatedFileInfo(java.lang.String src,
                                                                                boolean needBlockToken)
                                                                         throws java.io.IOException

Specified by:

getLocatedFileInfo in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

isFileClosed

public boolean isFileClosed(java.lang.String src)
                     throws java.io.IOException

Specified by:

isFileClosed in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getFileLinkInfo

public org.apache.hadoop.hdfs.protocol.HdfsFileStatus getFileLinkInfo(java.lang.String src)
                                                               throws java.io.IOException

Specified by:

getFileLinkInfo in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getStats

public long[] getStats()
                throws java.io.IOException

Specified by:

getStats in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getReplicatedBlockStats

public org.apache.hadoop.hdfs.protocol.ReplicatedBlockStats getReplicatedBlockStats()
                                                                             throws java.io.IOException

Specified by:

getReplicatedBlockStats in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getECBlockGroupStats

public org.apache.hadoop.hdfs.protocol.ECBlockGroupStats getECBlockGroupStats()
                                                                       throws java.io.IOException

Specified by:

getECBlockGroupStats in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getDatanodeReport

public org.apache.hadoop.hdfs.protocol.DatanodeInfo[] getDatanodeReport(org.apache.hadoop.hdfs.protocol.HdfsConstants.DatanodeReportType type)
                                                                 throws java.io.IOException

Specified by:

getDatanodeReport in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getDatanodeStorageReport

public org.apache.hadoop.hdfs.server.protocol.DatanodeStorageReport[] getDatanodeStorageReport(org.apache.hadoop.hdfs.protocol.HdfsConstants.DatanodeReportType type)
                                                                                        throws java.io.IOException

Specified by:

getDatanodeStorageReport in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

setSafeMode

public boolean setSafeMode(org.apache.hadoop.hdfs.protocol.HdfsConstants.SafeModeAction action,
                           boolean isChecked)
                    throws java.io.IOException

Specified by:

setSafeMode in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

restoreFailedStorage

public boolean restoreFailedStorage(java.lang.String arg)
                             throws java.io.IOException

Specified by:

restoreFailedStorage in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

saveNamespace

public boolean saveNamespace(long timeWindow,
                             long txGap)
                      throws java.io.IOException

Specified by:

saveNamespace in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

rollEdits

public long rollEdits()
               throws org.apache.hadoop.security.AccessControlException,
                      java.io.IOException

Specified by:

rollEdits in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

org.apache.hadoop.security.AccessControlException

java.io.IOException

refreshNodes

public void refreshNodes()
                  throws java.io.IOException

Specified by:

refreshNodes in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getTransactionID

public long getTransactionID()
                      throws java.io.IOException

Specified by:

getTransactionID in interface NamenodeProtocol

Returns:

The most recent transaction ID that has been synced to persistent storage, or applied from persistent storage in the case of a non-active node.

Throws:

java.io.IOException

getMostRecentCheckpointTxId

public long getMostRecentCheckpointTxId()
                                 throws java.io.IOException

Description copied from interface: NamenodeProtocol

Get the transaction ID of the most recent checkpoint.

Specified by:

getMostRecentCheckpointTxId in interface NamenodeProtocol

Throws:

java.io.IOException

rollEditLog

public CheckpointSignature rollEditLog()
                                throws java.io.IOException

Description copied from interface: NamenodeProtocol

Closes the current edit log and opens a new one. The call fails if the file system is in SafeMode.

Specified by:

rollEditLog in interface NamenodeProtocol

Returns:

a unique token to identify this transaction.

Throws:

java.io.IOException

getEditLogManifest

public RemoteEditLogManifest getEditLogManifest(long sinceTxId)
                                         throws java.io.IOException

Description copied from interface: NamenodeProtocol

Return a structure containing details about all edit logs available to be fetched from the NameNode.

Specified by:

getEditLogManifest in interface NamenodeProtocol

Parameters:

sinceTxId - return only logs that contain transactions >= sinceTxId

Throws:

java.io.IOException

isUpgradeFinalized

public boolean isUpgradeFinalized()
                           throws java.io.IOException

Specified by:

isUpgradeFinalized in interface NamenodeProtocol

Returns:

Whether the NameNode is in upgrade state (false) or not (true)

Throws:

java.io.IOException

isRollingUpgrade

public boolean isRollingUpgrade()
                         throws java.io.IOException

Description copied from interface: NamenodeProtocol

return whether the Namenode is rolling upgrade in progress (true) or not (false).

Specified by:

isRollingUpgrade in interface NamenodeProtocol

Returns:

Throws:

java.io.IOException

finalizeUpgrade

public void finalizeUpgrade()
                     throws java.io.IOException

Specified by:

finalizeUpgrade in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

upgradeStatus

public boolean upgradeStatus()
                      throws java.io.IOException

Specified by:

upgradeStatus in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

rollingUpgrade

public org.apache.hadoop.hdfs.protocol.RollingUpgradeInfo rollingUpgrade(org.apache.hadoop.hdfs.protocol.HdfsConstants.RollingUpgradeAction action)
                                                                  throws java.io.IOException

Specified by:

rollingUpgrade in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

metaSave

public void metaSave(java.lang.String filename)
              throws java.io.IOException

Specified by:

metaSave in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

listOpenFiles

@Deprecated
public org.apache.hadoop.fs.BatchedRemoteIterator.BatchedEntries<org.apache.hadoop.hdfs.protocol.OpenFileEntry> listOpenFiles(long prevId)
                                                                                                                       throws java.io.IOException

Deprecated.

Specified by:

listOpenFiles in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

listOpenFiles

public org.apache.hadoop.fs.BatchedRemoteIterator.BatchedEntries<org.apache.hadoop.hdfs.protocol.OpenFileEntry> listOpenFiles(long prevId,
                                                                                                                              java.util.EnumSet<org.apache.hadoop.hdfs.protocol.OpenFilesIterator.OpenFilesType> openFilesTypes,
                                                                                                                              java.lang.String path)
                                                                                                                       throws java.io.IOException

Specified by:

listOpenFiles in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

msync

public void msync()
           throws java.io.IOException

Specified by:

msync in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getHAServiceState

public org.apache.hadoop.ha.HAServiceProtocol.HAServiceState getHAServiceState()
                                                                        throws java.io.IOException

Specified by:

getHAServiceState in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

listCorruptFileBlocks

public org.apache.hadoop.hdfs.protocol.CorruptFileBlocks listCorruptFileBlocks(java.lang.String path,
                                                                               java.lang.String cookie)
                                                                        throws java.io.IOException

Specified by:

listCorruptFileBlocks in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

setBalancerBandwidth

public void setBalancerBandwidth(long bandwidth)
                          throws java.io.IOException

Tell all datanodes to use a new, non-persistent bandwidth value for dfs.datanode.balance.bandwidthPerSec.

Specified by:

setBalancerBandwidth in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Parameters:

bandwidth - Balancer bandwidth in bytes per second for all datanodes.

Throws:

java.io.IOException

getContentSummary

public org.apache.hadoop.fs.ContentSummary getContentSummary(java.lang.String path)
                                                      throws java.io.IOException

Specified by:

getContentSummary in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getQuotaUsage

public org.apache.hadoop.fs.QuotaUsage getQuotaUsage(java.lang.String path)
                                              throws java.io.IOException

Specified by:

getQuotaUsage in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

satisfyStoragePolicy

public void satisfyStoragePolicy(java.lang.String src)
                          throws java.io.IOException

Specified by:

satisfyStoragePolicy in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getSlowDatanodeReport

public org.apache.hadoop.hdfs.protocol.DatanodeInfo[] getSlowDatanodeReport()
                                                                     throws java.io.IOException

Specified by:

getSlowDatanodeReport in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

setQuota

public void setQuota(java.lang.String path,
                     long namespaceQuota,
                     long storagespaceQuota,
                     org.apache.hadoop.fs.StorageType type)
              throws java.io.IOException

Specified by:

setQuota in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

fsync

public void fsync(java.lang.String src,
                  long fileId,
                  java.lang.String clientName,
                  long lastBlockLength)
           throws java.io.IOException

Specified by:

fsync in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

setTimes

public void setTimes(java.lang.String src,
                     long mtime,
                     long atime)
              throws java.io.IOException

Specified by:

setTimes in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

createSymlink

public void createSymlink(java.lang.String target,
                          java.lang.String link,
                          org.apache.hadoop.fs.permission.FsPermission dirPerms,
                          boolean createParent)
                   throws java.io.IOException

Specified by:

createSymlink in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getLinkTarget

public java.lang.String getLinkTarget(java.lang.String path)
                               throws java.io.IOException

Specified by:

getLinkTarget in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

registerDatanode

public DatanodeRegistration registerDatanode(DatanodeRegistration nodeReg)
                                      throws java.io.IOException

Description copied from interface: DatanodeProtocol

Register Datanode.

Specified by:

registerDatanode in interface DatanodeProtocol

Parameters:

nodeReg - datanode registration information

Returns:

the given DatanodeRegistration with updated registration information

Throws:

java.io.IOException

See Also:

FSNamesystem.registerDatanode(DatanodeRegistration)

sendHeartbeat

public HeartbeatResponse sendHeartbeat(DatanodeRegistration nodeReg,
                                       org.apache.hadoop.hdfs.server.protocol.StorageReport[] report,
                                       long dnCacheCapacity,
                                       long dnCacheUsed,
                                       int xmitsInProgress,
                                       int xceiverCount,
                                       int failedVolumes,
                                       VolumeFailureSummary volumeFailureSummary,
                                       boolean requestFullBlockReportLease,
                                       @Nonnull
                                       org.apache.hadoop.hdfs.server.protocol.SlowPeerReports slowPeers,
                                       @Nonnull
                                       org.apache.hadoop.hdfs.server.protocol.SlowDiskReports slowDisks)
                                throws java.io.IOException

Description copied from interface: DatanodeProtocol

sendHeartbeat() tells the NameNode that the DataNode is still alive and well. Includes some status info, too. It also gives the NameNode a chance to return an array of "DatanodeCommand" objects in HeartbeatResponse. A DatanodeCommand tells the DataNode to invalidate local block(s), or to copy them to other DataNodes, etc.

Specified by:

sendHeartbeat in interface DatanodeProtocol

Parameters:

nodeReg - datanode registration information.

report - utilization report per storage.

dnCacheCapacity - the total cache capacity of the datanode (in bytes).

dnCacheUsed - the amount of cache used by the datanode (in bytes).

xmitsInProgress - number of transfers from this datanode to others.

xceiverCount - number of active transceiver threads.

failedVolumes - number of failed volumes.

volumeFailureSummary - info about volume failures.

requestFullBlockReportLease - whether to request a full block report lease.

slowPeers - Details of peer DataNodes that were detected as being slow to respond to packet writes. Empty report if no slow peers were detected by the DataNode.

slowDisks - Details of disks on DataNodes that were detected as being slow. Empty report if no slow disks were detected.

Throws:

java.io.IOException - on error.

blockReport

public DatanodeCommand blockReport(DatanodeRegistration nodeReg,
                                   java.lang.String poolId,
                                   StorageBlockReport[] reports,
                                   BlockReportContext context)
                            throws java.io.IOException

Description copied from interface: DatanodeProtocol

blockReport() tells the NameNode about all the locally-stored blocks. The NameNode returns an array of Blocks that have become obsolete and should be deleted. This function is meant to upload *all* the locally-stored blocks. It's invoked upon startup and then infrequently afterwards.

Specified by:

blockReport in interface DatanodeProtocol

Parameters:

nodeReg - datanode registration

poolId - the block pool ID for the blocks

reports - report of blocks per storage Each finalized block is represented as 3 longs. Each under- construction replica is represented as 4 longs. This is done instead of Block[] to reduce memory used by block reports.

context - Context information for this block report.

Returns:

- the next command for DN to process.

Throws:

java.io.IOException

cacheReport

public DatanodeCommand cacheReport(DatanodeRegistration nodeReg,
                                   java.lang.String poolId,
                                   java.util.List<java.lang.Long> blockIds)
                            throws java.io.IOException

Description copied from interface: DatanodeProtocol

Communicates the complete list of locally cached blocks to the NameNode. This method is similar to DatanodeProtocol.blockReport(DatanodeRegistration, String, StorageBlockReport[], BlockReportContext), which is used to communicated blocks stored on disk.

Specified by:

cacheReport in interface DatanodeProtocol

Parameters:

nodeReg - The datanode registration.

poolId - The block pool ID for the blocks.

blockIds - A list of block IDs.

Returns:

The DatanodeCommand.

Throws:

java.io.IOException

blockReceivedAndDeleted

public void blockReceivedAndDeleted(DatanodeRegistration nodeReg,
                                    java.lang.String poolId,
                                    StorageReceivedDeletedBlocks[] receivedAndDeletedBlocks)
                             throws java.io.IOException

Description copied from interface: DatanodeProtocol

blockReceivedAndDeleted() allows the DataNode to tell the NameNode about recently-received and -deleted block data. For the case of received blocks, a hint for preferred replica to be deleted when there is any excessive blocks is provided. For example, whenever client code writes a new Block here, or another DataNode copies a Block to this DataNode, it will call blockReceived().

Specified by:

blockReceivedAndDeleted in interface DatanodeProtocol

Throws:

java.io.IOException

errorReport

public void errorReport(DatanodeRegistration nodeReg,
                        int errorCode,
                        java.lang.String msg)
                 throws java.io.IOException

Description copied from interface: DatanodeProtocol

errorReport() tells the NameNode about something that has gone awry. Useful for debugging.

Specified by:

errorReport in interface DatanodeProtocol

Throws:

java.io.IOException

versionRequest

public NamespaceInfo versionRequest()
                             throws java.io.IOException

Description copied from interface: NamenodeProtocol

Request name-node version and storage information.

Specified by:

versionRequest in interface DatanodeProtocol

Specified by:

versionRequest in interface NamenodeProtocol

Returns:

NamespaceInfo identifying versions and storage information of the name-node

Throws:

java.io.IOException

sendLifeline

public void sendLifeline(DatanodeRegistration nodeReg,
                         org.apache.hadoop.hdfs.server.protocol.StorageReport[] report,
                         long dnCacheCapacity,
                         long dnCacheUsed,
                         int xmitsInProgress,
                         int xceiverCount,
                         int failedVolumes,
                         VolumeFailureSummary volumeFailureSummary)
                  throws java.io.IOException

Specified by:

sendLifeline in interface DatanodeLifelineProtocol

Throws:

java.io.IOException

refreshServiceAcl

public void refreshServiceAcl()
                       throws java.io.IOException

Specified by:

refreshServiceAcl in interface org.apache.hadoop.security.authorize.RefreshAuthorizationPolicyProtocol

Throws:

java.io.IOException

refreshUserToGroupsMappings

public void refreshUserToGroupsMappings()
                                 throws java.io.IOException

Specified by:

refreshUserToGroupsMappings in interface org.apache.hadoop.security.RefreshUserMappingsProtocol

Throws:

java.io.IOException

refreshSuperUserGroupsConfiguration

public void refreshSuperUserGroupsConfiguration()
                                         throws java.io.IOException

Specified by:

refreshSuperUserGroupsConfiguration in interface org.apache.hadoop.security.RefreshUserMappingsProtocol

Throws:

java.io.IOException

refreshCallQueue

public void refreshCallQueue()
                      throws java.io.IOException

Specified by:

refreshCallQueue in interface org.apache.hadoop.ipc.RefreshCallQueueProtocol

Throws:

java.io.IOException

refresh

public java.util.Collection<org.apache.hadoop.ipc.RefreshResponse> refresh(java.lang.String identifier,
                                                                           java.lang.String[] args)

Specified by:

refresh in interface org.apache.hadoop.ipc.GenericRefreshProtocol

getGroupsForUser

public java.lang.String[] getGroupsForUser(java.lang.String user)
                                    throws java.io.IOException

Specified by:

getGroupsForUser in interface org.apache.hadoop.tools.GetUserMappingsProtocol

Throws:

java.io.IOException

monitorHealth

public void monitorHealth()
                   throws org.apache.hadoop.ha.HealthCheckFailedException,
                          org.apache.hadoop.security.AccessControlException,
                          java.io.IOException

Specified by:

monitorHealth in interface org.apache.hadoop.ha.HAServiceProtocol

Throws:

org.apache.hadoop.ha.HealthCheckFailedException

org.apache.hadoop.security.AccessControlException

java.io.IOException

transitionToActive

public void transitionToActive(org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo req)
                        throws org.apache.hadoop.ha.ServiceFailedException,
                               org.apache.hadoop.security.AccessControlException,
                               java.io.IOException

Specified by:

transitionToActive in interface org.apache.hadoop.ha.HAServiceProtocol

Throws:

org.apache.hadoop.ha.ServiceFailedException

org.apache.hadoop.security.AccessControlException

java.io.IOException

transitionToStandby

public void transitionToStandby(org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo req)
                         throws org.apache.hadoop.ha.ServiceFailedException,
                                org.apache.hadoop.security.AccessControlException,
                                java.io.IOException

Specified by:

transitionToStandby in interface org.apache.hadoop.ha.HAServiceProtocol

Throws:

org.apache.hadoop.ha.ServiceFailedException

org.apache.hadoop.security.AccessControlException

java.io.IOException

transitionToObserver

public void transitionToObserver(org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo req)
                          throws org.apache.hadoop.ha.ServiceFailedException,
                                 org.apache.hadoop.security.AccessControlException,
                                 java.io.IOException

Specified by:

transitionToObserver in interface org.apache.hadoop.ha.HAServiceProtocol

Throws:

org.apache.hadoop.ha.ServiceFailedException

org.apache.hadoop.security.AccessControlException

java.io.IOException

getServiceStatus

public org.apache.hadoop.ha.HAServiceStatus getServiceStatus()
                                                      throws org.apache.hadoop.security.AccessControlException,
                                                             org.apache.hadoop.ha.ServiceFailedException,
                                                             java.io.IOException

Specified by:

getServiceStatus in interface org.apache.hadoop.ha.HAServiceProtocol

Throws:

org.apache.hadoop.security.AccessControlException

org.apache.hadoop.ha.ServiceFailedException

java.io.IOException

getDataEncryptionKey

public org.apache.hadoop.hdfs.security.token.block.DataEncryptionKey getDataEncryptionKey()
                                                                                   throws java.io.IOException

Specified by:

getDataEncryptionKey in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

createSnapshot

public java.lang.String createSnapshot(java.lang.String snapshotRoot,
                                       java.lang.String snapshotName)
                                throws java.io.IOException

Specified by:

createSnapshot in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

deleteSnapshot

public void deleteSnapshot(java.lang.String snapshotRoot,
                           java.lang.String snapshotName)
                    throws java.io.IOException

Specified by:

deleteSnapshot in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

allowSnapshot

public void allowSnapshot(java.lang.String snapshotRoot)
                   throws java.io.IOException

Specified by:

allowSnapshot in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

disallowSnapshot

public void disallowSnapshot(java.lang.String snapshot)
                      throws java.io.IOException

Specified by:

disallowSnapshot in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

renameSnapshot

public void renameSnapshot(java.lang.String snapshotRoot,
                           java.lang.String snapshotOldName,
                           java.lang.String snapshotNewName)
                    throws java.io.IOException

Specified by:

renameSnapshot in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getSnapshottableDirListing

public org.apache.hadoop.hdfs.protocol.SnapshottableDirectoryStatus[] getSnapshottableDirListing()
                                                                                          throws java.io.IOException

Specified by:

getSnapshottableDirListing in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getSnapshotListing

public org.apache.hadoop.hdfs.protocol.SnapshotStatus[] getSnapshotListing(java.lang.String snapshotRoot)
                                                                    throws java.io.IOException

Specified by:

getSnapshotListing in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getSnapshotDiffReport

public org.apache.hadoop.hdfs.protocol.SnapshotDiffReport getSnapshotDiffReport(java.lang.String snapshotRoot,
                                                                                java.lang.String earlierSnapshotName,
                                                                                java.lang.String laterSnapshotName)
                                                                         throws java.io.IOException

Specified by:

getSnapshotDiffReport in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getSnapshotDiffReportListing

public org.apache.hadoop.hdfs.protocol.SnapshotDiffReportListing getSnapshotDiffReportListing(java.lang.String snapshotRoot,
                                                                                              java.lang.String earlierSnapshotName,
                                                                                              java.lang.String laterSnapshotName,
                                                                                              byte[] startPath,
                                                                                              int index)
                                                                                       throws java.io.IOException

Specified by:

getSnapshotDiffReportListing in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

addCacheDirective

public long addCacheDirective(org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo path,
                              java.util.EnumSet<org.apache.hadoop.fs.CacheFlag> flags)
                       throws java.io.IOException

Specified by:

addCacheDirective in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

modifyCacheDirective

public void modifyCacheDirective(org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo directive,
                                 java.util.EnumSet<org.apache.hadoop.fs.CacheFlag> flags)
                          throws java.io.IOException

Specified by:

modifyCacheDirective in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

removeCacheDirective

public void removeCacheDirective(long id)
                          throws java.io.IOException

Specified by:

removeCacheDirective in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

listCacheDirectives

public org.apache.hadoop.fs.BatchedRemoteIterator.BatchedEntries<org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry> listCacheDirectives(long prevId,
                                                                                                                                          org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo filter)
                                                                                                                                   throws java.io.IOException

Specified by:

listCacheDirectives in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

addCachePool

public void addCachePool(org.apache.hadoop.hdfs.protocol.CachePoolInfo info)
                  throws java.io.IOException

Specified by:

addCachePool in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

modifyCachePool

public void modifyCachePool(org.apache.hadoop.hdfs.protocol.CachePoolInfo info)
                     throws java.io.IOException

Specified by:

modifyCachePool in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

removeCachePool

public void removeCachePool(java.lang.String cachePoolName)
                     throws java.io.IOException

Specified by:

removeCachePool in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

listCachePools

public org.apache.hadoop.fs.BatchedRemoteIterator.BatchedEntries<org.apache.hadoop.hdfs.protocol.CachePoolEntry> listCachePools(java.lang.String prevKey)
                                                                                                                         throws java.io.IOException

Specified by:

listCachePools in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

modifyAclEntries

public void modifyAclEntries(java.lang.String src,
                             java.util.List<org.apache.hadoop.fs.permission.AclEntry> aclSpec)
                      throws java.io.IOException

Specified by:

modifyAclEntries in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

removeAclEntries

public void removeAclEntries(java.lang.String src,
                             java.util.List<org.apache.hadoop.fs.permission.AclEntry> aclSpec)
                      throws java.io.IOException

Specified by:

removeAclEntries in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

removeDefaultAcl

public void removeDefaultAcl(java.lang.String src)
                      throws java.io.IOException

Specified by:

removeDefaultAcl in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

removeAcl

public void removeAcl(java.lang.String src)
               throws java.io.IOException

Specified by:

removeAcl in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

setAcl

public void setAcl(java.lang.String src,
                   java.util.List<org.apache.hadoop.fs.permission.AclEntry> aclSpec)
            throws java.io.IOException

Specified by:

setAcl in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getAclStatus

public org.apache.hadoop.fs.permission.AclStatus getAclStatus(java.lang.String src)
                                                       throws java.io.IOException

Specified by:

getAclStatus in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

createEncryptionZone

public void createEncryptionZone(java.lang.String src,
                                 java.lang.String keyName)
                          throws java.io.IOException

Specified by:

createEncryptionZone in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getEZForPath

public org.apache.hadoop.hdfs.protocol.EncryptionZone getEZForPath(java.lang.String src)
                                                            throws java.io.IOException

Specified by:

getEZForPath in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

listEncryptionZones

public org.apache.hadoop.fs.BatchedRemoteIterator.BatchedEntries<org.apache.hadoop.hdfs.protocol.EncryptionZone> listEncryptionZones(long prevId)
                                                                                                                              throws java.io.IOException

Specified by:

listEncryptionZones in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

reencryptEncryptionZone

public void reencryptEncryptionZone(java.lang.String zone,
                                    org.apache.hadoop.hdfs.protocol.HdfsConstants.ReencryptAction action)
                             throws java.io.IOException

Specified by:

reencryptEncryptionZone in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

listReencryptionStatus

public org.apache.hadoop.fs.BatchedRemoteIterator.BatchedEntries<org.apache.hadoop.hdfs.protocol.ZoneReencryptionStatus> listReencryptionStatus(long prevId)
                                                                                                                                         throws java.io.IOException

Specified by:

listReencryptionStatus in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

setErasureCodingPolicy

public void setErasureCodingPolicy(java.lang.String src,
                                   java.lang.String ecPolicyName)
                            throws java.io.IOException

Specified by:

setErasureCodingPolicy in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

setXAttr

public void setXAttr(java.lang.String src,
                     org.apache.hadoop.fs.XAttr xAttr,
                     java.util.EnumSet<org.apache.hadoop.fs.XAttrSetFlag> flag)
              throws java.io.IOException

Specified by:

setXAttr in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getXAttrs

public java.util.List<org.apache.hadoop.fs.XAttr> getXAttrs(java.lang.String src,
                                                            java.util.List<org.apache.hadoop.fs.XAttr> xAttrs)
                                                     throws java.io.IOException

Specified by:

getXAttrs in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

listXAttrs

public java.util.List<org.apache.hadoop.fs.XAttr> listXAttrs(java.lang.String src)
                                                      throws java.io.IOException

Specified by:

listXAttrs in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

removeXAttr

public void removeXAttr(java.lang.String src,
                        org.apache.hadoop.fs.XAttr xAttr)
                 throws java.io.IOException

Specified by:

removeXAttr in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

checkAccess

public void checkAccess(java.lang.String path,
                        org.apache.hadoop.fs.permission.FsAction mode)
                 throws java.io.IOException

Specified by:

checkAccess in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getCurrentEditLogTxid

public long getCurrentEditLogTxid()
                           throws java.io.IOException

Specified by:

getCurrentEditLogTxid in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getEditsFromTxid

public org.apache.hadoop.hdfs.inotify.EventBatchList getEditsFromTxid(long txid)
                                                               throws java.io.IOException

Specified by:

getEditsFromTxid in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getErasureCodingPolicies

public org.apache.hadoop.hdfs.protocol.ErasureCodingPolicyInfo[] getErasureCodingPolicies()
                                                                                   throws java.io.IOException

Specified by:

getErasureCodingPolicies in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getErasureCodingCodecs

public java.util.Map<java.lang.String,java.lang.String> getErasureCodingCodecs()
                                                                              throws java.io.IOException

Specified by:

getErasureCodingCodecs in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getErasureCodingPolicy

public org.apache.hadoop.hdfs.protocol.ErasureCodingPolicy getErasureCodingPolicy(java.lang.String src)
                                                                           throws java.io.IOException

Specified by:

getErasureCodingPolicy in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

unsetErasureCodingPolicy

public void unsetErasureCodingPolicy(java.lang.String src)
                              throws java.io.IOException

Specified by:

unsetErasureCodingPolicy in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

getECTopologyResultForPolicies

public org.apache.hadoop.hdfs.protocol.ECTopologyVerifierResult getECTopologyResultForPolicies(java.lang.String... policyNames)
                                                                                        throws java.io.IOException

Specified by:

getECTopologyResultForPolicies in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

addErasureCodingPolicies

public org.apache.hadoop.hdfs.protocol.AddErasureCodingPolicyResponse[] addErasureCodingPolicies(org.apache.hadoop.hdfs.protocol.ErasureCodingPolicy[] policies)
                                                                                          throws java.io.IOException

Specified by:

addErasureCodingPolicies in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

removeErasureCodingPolicy

public void removeErasureCodingPolicy(java.lang.String ecPolicyName)
                               throws java.io.IOException

Specified by:

removeErasureCodingPolicy in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

enableErasureCodingPolicy

public void enableErasureCodingPolicy(java.lang.String ecPolicyName)
                               throws java.io.IOException

Specified by:

enableErasureCodingPolicy in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

disableErasureCodingPolicy

public void disableErasureCodingPolicy(java.lang.String ecPolicyName)
                                throws java.io.IOException

Specified by:

disableErasureCodingPolicy in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException

startReconfiguration

public void startReconfiguration()
                          throws java.io.IOException

Specified by:

startReconfiguration in interface org.apache.hadoop.hdfs.protocol.ReconfigurationProtocol

Throws:

java.io.IOException

getReconfigurationStatus

public org.apache.hadoop.conf.ReconfigurationTaskStatus getReconfigurationStatus()
                                                                          throws java.io.IOException

Specified by:

getReconfigurationStatus in interface org.apache.hadoop.hdfs.protocol.ReconfigurationProtocol

Throws:

java.io.IOException

listReconfigurableProperties

public java.util.List<java.lang.String> listReconfigurableProperties()
                                                              throws java.io.IOException

Specified by:

listReconfigurableProperties in interface org.apache.hadoop.hdfs.protocol.ReconfigurationProtocol

Throws:

java.io.IOException

getNextSPSPath

public java.lang.Long getNextSPSPath()
                              throws java.io.IOException

Specified by:

getNextSPSPath in interface NamenodeProtocol

Returns:

Gets the next available sps path, otherwise null. This API used by External SPS.

Throws:

java.io.IOException

getEnclosingRoot

public org.apache.hadoop.fs.Path getEnclosingRoot(java.lang.String src)
                                           throws java.io.IOException

Specified by:

getEnclosingRoot in interface org.apache.hadoop.hdfs.protocol.ClientProtocol

Throws:

java.io.IOException