Constant Field Values

Contents

• org.apache.*

org.apache.*

org.apache.hadoop.fs.SWebHdfs

Modifier and Type	Constant Field	Value
public static final String	SCHEME	"swebhdfs"

org.apache.hadoop.fs.WebHdfs

Modifier and Type	Constant Field	Value
public static final String	SCHEME	"webhdfs"

org.apache.hadoop.hdfs.DFSOpsCountStatistics

Modifier and Type	Constant Field	Value
public static final String	NAME	"DFSOpsCountStatistics"

org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.BlockWrite

Modifier and Type	Constant Field	Value
public static final int	LOCATEFOLLOWINGBLOCK_INITIAL_DELAY_MS_DEFAULT	400
public static final String	LOCATEFOLLOWINGBLOCK_INITIAL_DELAY_MS_KEY	"dfs.client.block.write.locateFollowingBlock.initial.delay.ms"
public static final int	LOCATEFOLLOWINGBLOCK_RETRIES_DEFAULT	5
public static final String	LOCATEFOLLOWINGBLOCK_RETRIES_KEY	"dfs.client.block.write.locateFollowingBlock.retries"
public static final String	PREFIX	"dfs.client.block.write."
public static final int	RETRIES_DEFAULT	3
public static final String	RETRIES_KEY	"dfs.client.block.write.retries"

org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.BlockWrite.ReplaceDatanodeOnFailure

Modifier and Type	Constant Field	Value
public static final boolean	BEST_EFFORT_DEFAULT	false
public static final String	BEST_EFFORT_KEY	"dfs.client.block.write.replace-datanode-on-failure.best-effort"
public static final boolean	ENABLE_DEFAULT	true
public static final String	ENABLE_KEY	"dfs.client.block.write.replace-datanode-on-failure.enable"
public static final String	POLICY_DEFAULT	"DEFAULT"
public static final String	POLICY_KEY	"dfs.client.block.write.replace-datanode-on-failure.policy"
public static final String	PREFIX	"dfs.client.block.write.replace-datanode-on-failure."

org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.DeprecatedKeys

Modifier and Type	Constant Field	Value
public static final String	DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_KEY	"dfs.client.https.keystore.resource"
public static final String	DFS_CLIENT_HTTPS_NEED_AUTH_KEY	"dfs.client.https.need-auth"
public static final String	DFS_DATANODE_BALANCE_BANDWIDTHPERSEC_KEY	"dfs.datanode.balance.bandwidthPerSec"
public static final String	DFS_DATANODE_DATA_DIR_KEY	"dfs.datanode.data.dir"
public static final String	DFS_DATANODE_HOST_NAME_KEY	"dfs.datanode.hostname"
public static final String	DFS_DATANODE_MAX_RECEIVER_THREADS_KEY	"dfs.datanode.max.transfer.threads"
public static final String	DFS_METRICS_SESSION_ID_KEY	"dfs.metrics.session-id"
public static final String	DFS_NAMENODE_ACCESSTIME_PRECISION_KEY	"dfs.namenode.accesstime.precision"
public static final String	DFS_NAMENODE_BACKUP_ADDRESS_KEY	"dfs.namenode.backup.address"
public static final String	DFS_NAMENODE_BACKUP_HTTP_ADDRESS_KEY	"dfs.namenode.backup.http-address"
public static final String	DFS_NAMENODE_CHECKPOINT_DIR_KEY	"dfs.namenode.checkpoint.dir"
public static final String	DFS_NAMENODE_CHECKPOINT_EDITS_DIR_KEY	"dfs.namenode.checkpoint.edits.dir"
public static final String	DFS_NAMENODE_CHECKPOINT_PERIOD_KEY	"dfs.namenode.checkpoint.period"
public static final String	DFS_NAMENODE_EDITS_DIR_KEY	"dfs.namenode.edits.dir"
public static final String	DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_KEY	"dfs.namenode.heartbeat.recheck-interval"
public static final String	DFS_NAMENODE_MAX_OBJECTS_KEY	"dfs.namenode.max.objects"
public static final String	DFS_NAMENODE_NAME_DIR_KEY	"dfs.namenode.name.dir"
public static final String	DFS_NAMENODE_NAME_DIR_RESTORE_KEY	"dfs.namenode.name.dir.restore"
public static final String	DFS_NAMENODE_REPLICATION_CONSIDERLOAD_KEY	"dfs.namenode.replication.considerLoad"
public static final String	DFS_NAMENODE_REPLICATION_INTERVAL_KEY	"dfs.namenode.replication.interval"
public static final String	DFS_NAMENODE_REPLICATION_MAX_STREAMS_KEY	"dfs.namenode.replication.max-streams"
public static final String	DFS_NAMENODE_REPLICATION_MIN_KEY	"dfs.namenode.replication.min"
public static final String	DFS_NAMENODE_REPLICATION_PENDING_TIMEOUT_SEC_KEY	"dfs.namenode.replication.pending.timeout-sec"
public static final String	DFS_NAMENODE_SAFEMODE_EXTENSION_KEY	"dfs.namenode.safemode.extension"
public static final String	DFS_NAMENODE_SAFEMODE_THRESHOLD_PCT_KEY	"dfs.namenode.safemode.threshold-pct"
public static final String	DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_KEY	"dfs.namenode.secondary.http-address"
public static final String	DFS_NAMESERVICE_ID	"dfs.nameservice.id"
public static final String	DFS_PERMISSIONS_ENABLED_KEY	"dfs.permissions.enabled"
public static final String	DFS_PERMISSIONS_SUPERUSERGROUP_KEY	"dfs.permissions.superusergroup"

org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.Failover

Modifier and Type	Constant Field	Value
public static final int	CONNECTION_RETRIES_DEFAULT	0
public static final String	CONNECTION_RETRIES_KEY	"dfs.client.failover.connection.retries"
public static final int	CONNECTION_RETRIES_ON_SOCKET_TIMEOUTS_DEFAULT	0
public static final String	CONNECTION_RETRIES_ON_SOCKET_TIMEOUTS_KEY	"dfs.client.failover.connection.retries.on.timeouts"
public static final int	MAX_ATTEMPTS_DEFAULT	15
public static final String	MAX_ATTEMPTS_KEY	"dfs.client.failover.max.attempts"
public static final String	PREFIX	"dfs.client.failover."
public static final String	PROXY_PROVIDER_KEY_PREFIX	"dfs.client.failover.proxy.provider"
public static final int	SLEEPTIME_BASE_DEFAULT	500
public static final String	SLEEPTIME_BASE_KEY	"dfs.client.failover.sleep.base.millis"
public static final int	SLEEPTIME_MAX_DEFAULT	15000
public static final String	SLEEPTIME_MAX_KEY	"dfs.client.failover.sleep.max.millis"

org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.HedgedRead

Modifier and Type	Constant Field	Value
public static final String	PREFIX	"dfs.client.hedged.read."
public static final int	THREADPOOL_SIZE_DEFAULT	0
public static final String	THREADPOOL_SIZE_KEY	"dfs.client.hedged.read.threadpool.size"
public static final long	THRESHOLD_MILLIS_DEFAULT	500L
public static final String	THRESHOLD_MILLIS_KEY	"dfs.client.hedged.read.threshold.millis"

org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.HttpClient

Modifier and Type	Constant Field	Value
public static final int	FAILOVER_MAX_ATTEMPTS_DEFAULT	15
public static final String	FAILOVER_MAX_ATTEMPTS_KEY	"dfs.http.client.failover.max.attempts"
public static final int	FAILOVER_SLEEPTIME_BASE_DEFAULT	500
public static final String	FAILOVER_SLEEPTIME_BASE_KEY	"dfs.http.client.failover.sleep.base.millis"
public static final int	FAILOVER_SLEEPTIME_MAX_DEFAULT	15000
public static final String	FAILOVER_SLEEPTIME_MAX_KEY	"dfs.http.client.failover.sleep.max.millis"
public static final String	PREFIX	"dfs.http.client."
public static final int	RETRY_MAX_ATTEMPTS_DEFAULT	10
public static final String	RETRY_MAX_ATTEMPTS_KEY	"dfs.http.client.retry.max.attempts"
public static final boolean	RETRY_POLICY_ENABLED_DEFAULT	false
public static final String	RETRY_POLICY_ENABLED_KEY	"dfs.http.client.retry.policy.enabled"
public static final String	RETRY_POLICY_SPEC_DEFAULT	"10000,6,60000,10"
public static final String	RETRY_POLICY_SPEC_KEY	"dfs.http.client.retry.policy.spec"

org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.Mmap

Modifier and Type	Constant Field	Value
public static final int	CACHE_SIZE_DEFAULT	256
public static final String	CACHE_SIZE_KEY	"dfs.client.mmap.cache.size"
public static final long	CACHE_TIMEOUT_MS_DEFAULT	3600000L
public static final String	CACHE_TIMEOUT_MS_KEY	"dfs.client.mmap.cache.timeout.ms"
public static final boolean	ENABLED_DEFAULT	true
public static final String	ENABLED_KEY	"dfs.client.mmap.enabled"
public static final String	PREFIX	"dfs.client.mmap."
public static final long	RETRY_TIMEOUT_MS_DEFAULT	300000L
public static final String	RETRY_TIMEOUT_MS_KEY	"dfs.client.mmap.retry.timeout.ms"

org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.Read

Modifier and Type	Constant Field	Value
public static final String	PREFETCH_SIZE_KEY	"dfs.client.read.prefetch.size"
public static final String	PREFIX	"dfs.client.read."

org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.Read.ShortCircuit

Modifier and Type	Constant Field	Value
public static final int	BUFFER_SIZE_DEFAULT	1048576
public static final String	BUFFER_SIZE_KEY	"dfs.client.read.shortcircuit.buffer.size"
public static final boolean	DEFAULT	false
public static final String	PREFIX	"dfs.client.read.shortcircuit."
public static final boolean	SKIP_CHECKSUM_DEFAULT	false
public static final String	SKIP_CHECKSUM_KEY	"dfs.client.read.shortcircuit.skip.checksum"
public static final long	STREAMS_CACHE_EXPIRY_MS_DEFAULT	300000L
public static final String	STREAMS_CACHE_EXPIRY_MS_KEY	"dfs.client.read.shortcircuit.streams.cache.expiry.ms"
public static final int	STREAMS_CACHE_SIZE_DEFAULT	256
public static final String	STREAMS_CACHE_SIZE_KEY	"dfs.client.read.shortcircuit.streams.cache.size"

org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.Retry

Modifier and Type	Constant Field	Value
public static final int	INTERVAL_GET_LAST_BLOCK_LENGTH_DEFAULT	4000
public static final String	INTERVAL_GET_LAST_BLOCK_LENGTH_KEY	"dfs.client.retry.interval-ms.get-last-block-length"
public static final int	MAX_ATTEMPTS_DEFAULT	10
public static final String	MAX_ATTEMPTS_KEY	"dfs.client.retry.max.attempts"
public static final boolean	POLICY_ENABLED_DEFAULT	false
public static final String	POLICY_ENABLED_KEY	"dfs.client.retry.policy.enabled"
public static final String	POLICY_SPEC_DEFAULT	"10000,6,60000,10"
public static final String	POLICY_SPEC_KEY	"dfs.client.retry.policy.spec"
public static final String	PREFIX	"dfs.client.retry."
public static final int	TIMES_GET_LAST_BLOCK_LENGTH_DEFAULT	3
public static final String	TIMES_GET_LAST_BLOCK_LENGTH_KEY	"dfs.client.retry.times.get-last-block-length"
public static final int	WINDOW_BASE_DEFAULT	3000
public static final String	WINDOW_BASE_KEY	"dfs.client.retry.window.base"

org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.ShortCircuit

Modifier and Type	Constant Field	Value
public static final String	PREFIX	"dfs.client.read.short.circuit."
public static final long	REPLICA_STALE_THRESHOLD_MS_DEFAULT	1800000L
public static final String	REPLICA_STALE_THRESHOLD_MS_KEY	"dfs.client.read.short.circuit.replica.stale.threshold.ms"

org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.Write

Modifier and Type	Constant Field	Value
public static final long	EXCLUDE_NODES_CACHE_EXPIRY_INTERVAL_DEFAULT	600000L
public static final String	EXCLUDE_NODES_CACHE_EXPIRY_INTERVAL_KEY	"dfs.client.write.exclude.nodes.cache.expiry.interval.millis"
public static final int	MAX_PACKETS_IN_FLIGHT_DEFAULT	80
public static final String	MAX_PACKETS_IN_FLIGHT_KEY	"dfs.client.write.max-packets-in-flight"
public static final String	PREFIX	"dfs.client.write."

org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.Write.ByteArrayManager

Modifier and Type	Constant Field	Value
public static final int	COUNT_LIMIT_DEFAULT	2048
public static final String	COUNT_LIMIT_KEY	"dfs.client.write.byte-array-manager.count-limit"
public static final long	COUNT_RESET_TIME_PERIOD_MS_DEFAULT	10000L
public static final String	COUNT_RESET_TIME_PERIOD_MS_KEY	"dfs.client.write.byte-array-manager.count-reset-time-period-ms"
public static final int	COUNT_THRESHOLD_DEFAULT	128
public static final String	COUNT_THRESHOLD_KEY	"dfs.client.write.byte-array-manager.count-threshold"
public static final boolean	ENABLED_DEFAULT	false
public static final String	ENABLED_KEY	"dfs.client.write.byte-array-manager.enabled"
public static final String	PREFIX	"dfs.client.write.byte-array-manager."

org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo.Expiration

Modifier and Type	Constant Field	Value
public static final long	MAX_RELATIVE_EXPIRY_MS	2305843009213693951L

org.apache.hadoop.hdfs.protocol.CachePoolInfo

Modifier and Type	Constant Field	Value
public static final long	DEFAULT_LIMIT	9223372036854775807L
public static final long	DEFAULT_MAX_RELATIVE_EXPIRY	2305843009213693951L
public static final long	LIMIT_UNLIMITED	9223372036854775807L
public static final long	RELATIVE_EXPIRY_NEVER	2305843009213693951L

org.apache.hadoop.hdfs.server.datanode.ReplicaNotFoundException

Modifier and Type	Constant Field	Value
public static final String	NON_EXISTENT_REPLICA	"Cannot append to a non-existent replica "
public static final String	NON_RBW_REPLICA	"Cannot recover a non-RBW replica "
public static final String	UNEXPECTED_GS_REPLICA	"Cannot append to a replica with unexpected generation stamp "
public static final String	UNFINALIZED_AND_NONRBW_REPLICA	"Cannot recover append/close to a replica that\'s not FINALIZED and not RBW "
public static final String	UNFINALIZED_REPLICA	"Cannot append to an unfinalized replica "

org.apache.hadoop.hdfs.shortcircuit.ShortCircuitShm

Modifier and Type	Constant Field	Value
protected static final int	BYTES_PER_SLOT	64

org.apache.hadoop.hdfs.web.WebHdfsFileSystem

Modifier and Type	Constant Field	Value
public static final String	CANT_FALLBACK_TO_INSECURE_MSG	"The client is configured to only allow connecting to secure cluster"
public static final String	PATH_PREFIX	"/webhdfs/v1"
public static final int	VERSION	1

org.apache.hadoop.hdfs.web.oauth2.AccessTokenTimer

Modifier and Type	Constant Field	Value
public static final long	EXPIRE_BUFFER_MS	30000L

org.apache.hadoop.hdfs.web.oauth2.ConfRefreshTokenBasedAccessTokenProvider

Modifier and Type	Constant Field	Value
public static final String	OAUTH_REFRESH_TOKEN_EXPIRES_KEY	"dfs.webhdfs.oauth2.refresh.token.expires.ms.since.epoch"
public static final String	OAUTH_REFRESH_TOKEN_KEY	"dfs.webhdfs.oauth2.refresh.token"

org.apache.hadoop.hdfs.web.oauth2.CredentialBasedAccessTokenProvider

Modifier and Type	Constant Field	Value
public static final String	OAUTH_CREDENTIAL_KEY	"dfs.webhdfs.oauth2.credential"

org.apache.hadoop.hdfs.web.oauth2.OAuth2ConnectionConfigurator

Modifier and Type	Constant Field	Value
public static final String	HEADER	"Bearer "

org.apache.hadoop.hdfs.web.oauth2.OAuth2Constants

Modifier and Type	Constant Field	Value
public static final String	ACCESS_TOKEN	"access_token"
public static final String	BEARER	"bearer"
public static final String	CLIENT_CREDENTIALS	"client_credentials"
public static final String	CLIENT_ID	"client_id"
public static final String	CLIENT_SECRET	"client_secret"
public static final String	EXPIRES_IN	"expires_in"
public static final String	GRANT_TYPE	"grant_type"
public static final String	REFRESH_TOKEN	"refresh_token"
public static final String	TOKEN_TYPE	"token_type"

org.apache.hadoop.hdfs.web.resources.AccessTimeParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"-1"
public static final String	NAME	"accesstime"

org.apache.hadoop.hdfs.web.resources.AclPermissionParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"aclspec"

org.apache.hadoop.hdfs.web.resources.BlockSizeParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"null"
public static final String	NAME	"blocksize"

org.apache.hadoop.hdfs.web.resources.BufferSizeParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"null"
public static final String	NAME	"buffersize"

org.apache.hadoop.hdfs.web.resources.ConcatSourcesParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"sources"

org.apache.hadoop.hdfs.web.resources.CreateFlagParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"createflag"

org.apache.hadoop.hdfs.web.resources.CreateParentParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"true"
public static final String	NAME	"createparent"

org.apache.hadoop.hdfs.web.resources.DelegationParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"delegation"

org.apache.hadoop.hdfs.web.resources.DestinationParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"destination"

org.apache.hadoop.hdfs.web.resources.DoAsParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"doas"

org.apache.hadoop.hdfs.web.resources.ExcludeDatanodesParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"excludedatanodes"

org.apache.hadoop.hdfs.web.resources.FsActionParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"null"
public static final String	NAME	"fsaction"

org.apache.hadoop.hdfs.web.resources.GroupParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"group"

org.apache.hadoop.hdfs.web.resources.HttpOpParam<E extends Enum<E> & HttpOpParam.Op>

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"null"
public static final String	NAME	"op"

org.apache.hadoop.hdfs.web.resources.LengthParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"null"
public static final String	NAME	"length"

org.apache.hadoop.hdfs.web.resources.ModificationTimeParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"-1"
public static final String	NAME	"modificationtime"

org.apache.hadoop.hdfs.web.resources.NewLengthParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"null"
public static final String	NAME	"newlength"

org.apache.hadoop.hdfs.web.resources.OffsetParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"0"
public static final String	NAME	"offset"

org.apache.hadoop.hdfs.web.resources.OldSnapshotNameParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"oldsnapshotname"

org.apache.hadoop.hdfs.web.resources.OverwriteParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"false"
public static final String	NAME	"overwrite"

org.apache.hadoop.hdfs.web.resources.OwnerParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"owner"

org.apache.hadoop.hdfs.web.resources.PermissionParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"null"
public static final String	NAME	"permission"

org.apache.hadoop.hdfs.web.resources.RecursiveParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"false"
public static final String	NAME	"recursive"

org.apache.hadoop.hdfs.web.resources.RenameOptionSetParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"renameoptions"

org.apache.hadoop.hdfs.web.resources.RenewerParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"null"
public static final String	NAME	"renewer"

org.apache.hadoop.hdfs.web.resources.ReplicationParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	"null"
public static final String	NAME	"replication"

org.apache.hadoop.hdfs.web.resources.SnapshotNameParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"snapshotname"

org.apache.hadoop.hdfs.web.resources.StoragePolicyParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"storagepolicy"

org.apache.hadoop.hdfs.web.resources.TokenArgumentParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"token"

org.apache.hadoop.hdfs.web.resources.UserParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"user.name"

org.apache.hadoop.hdfs.web.resources.XAttrEncodingParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"encoding"

org.apache.hadoop.hdfs.web.resources.XAttrNameParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"xattr.name"

org.apache.hadoop.hdfs.web.resources.XAttrSetFlagParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"flag"

org.apache.hadoop.hdfs.web.resources.XAttrValueParam

Modifier and Type	Constant Field	Value
public static final String	DEFAULT	""
public static final String	NAME	"xattr.value"