常量字段值

目录

• org.apache.*

org.apache.*

org.apache.hadoop.filecache.DistributedCache

限定符和类型	常量字段	值
public static final String	CACHE_ARCHIVES	"mapred.cache.archives"
public static final String	CACHE_ARCHIVES_SIZES	"mapred.cache.archives.filesizes"
public static final String	CACHE_ARCHIVES_TIMESTAMPS	"mapred.cache.archives.timestamps"
public static final String	CACHE_FILES	"mapred.cache.files"
public static final String	CACHE_FILES_SIZES	"mapred.cache.files.filesizes"
public static final String	CACHE_FILES_TIMESTAMPS	"mapred.cache.files.timestamps"
public static final String	CACHE_LOCALARCHIVES	"mapred.cache.localArchives"
public static final String	CACHE_LOCALFILES	"mapred.cache.localFiles"
public static final String	CACHE_SYMLINK	"mapred.create.symlink"

org.apache.hadoop.fs.CommonConfigurationKeys

限定符和类型	常量字段	值
public static final boolean	DEFAULT_HADOOP_JETTY_LOGS_SERVE_ALIASES	true
public static final String	FS_DEFAULT_NAME_DEFAULT	"file:///"
public static final String	FS_DEFAULT_NAME_KEY	"fs.default.name"
public static final String	HADOOP_JETTY_LOGS_SERVE_ALIASES	"hadoop.jetty.logs.serve.aliases"
public static final boolean	HADOOP_RELAXED_VERSION_CHECK_DEFAULT	false
public static final String	HADOOP_RELAXED_VERSION_CHECK_KEY	"hadoop.relaxed.worker.version.check"
public static final String	HADOOP_SECURITY_AUTHENTICATION	"hadoop.security.authentication"
public static final String	HADOOP_SECURITY_AUTHORIZATION	"hadoop.security.authorization"
public static final String	HADOOP_SECURITY_GROUP_MAPPING	"hadoop.security.group.mapping"
public static final String	HADOOP_SECURITY_INSTRUMENTATION_REQUIRES_ADMIN	"hadoop.security.instrumentation.requires.admin"
public static final String	HADOOP_SECURITY_SERVICE_USER_NAME_KEY	"hadoop.security.service.user.name.key"
public static final String	HADOOP_SECURITY_TOKEN_SERVICE_USE_IP	"hadoop.security.token.service.use_ip"
public static final boolean	HADOOP_SECURITY_TOKEN_SERVICE_USE_IP_DEFAULT	true
public static final boolean	HADOOP_SECURITY_USE_WEAK_HTTP_CRYPTO_DEFAULT	false
public static final String	HADOOP_SECURITY_USE_WEAK_HTTP_CRYPTO_KEY	"hadoop.security.use-weak-http-crypto"
public static final boolean	HADOOP_SKIP_VERSION_CHECK_DEFAULT	false
public static final String	HADOOP_SKIP_VERSION_CHECK_KEY	"hadoop.skip.worker.version.check"
public static final int	IO_COMPRESSION_CODEC_SNAPPY_BUFFERSIZE_DEFAULT	262144
public static final String	IO_COMPRESSION_CODEC_SNAPPY_BUFFERSIZE_KEY	"io.compression.codec.snappy.buffersize"
public static final boolean	IO_NATIVE_LIB_AVAILABLE_DEFAULT	true
public static final String	IO_NATIVE_LIB_AVAILABLE_KEY	"hadoop.native.lib"
public static final boolean	IPC_CLIENT_FALLBACK_TO_SIMPLE_AUTH_ALLOWED_DEFAULT	false
public static final String	IPC_CLIENT_FALLBACK_TO_SIMPLE_AUTH_ALLOWED_KEY	"ipc.client.fallback-to-simple-auth-allowed"
public static final int	IPC_SERVER_RPC_READ_THREADS_DEFAULT	1
public static final String	IPC_SERVER_RPC_READ_THREADS_KEY	"ipc.server.read.threadpool.size"

org.apache.hadoop.fs.DF

限定符和类型	常量字段	值
public static final long	DF_INTERVAL_DEFAULT	3000L

org.apache.hadoop.fs.FileSystem

限定符和类型	常量字段	值
public static final String	FS_DEFAULT_NAME_KEY	"fs.default.name"

org.apache.hadoop.fs.HarFileSystem

限定符和类型	常量字段	值
public static final int	VERSION	3

org.apache.hadoop.fs.LocalDirAllocator

限定符和类型	常量字段	值
public static final int	SIZE_UNKNOWN	-1

org.apache.hadoop.fs.MD5MD5CRC32FileChecksum

限定符和类型	常量字段	值
public static final int	LENGTH	28

org.apache.hadoop.fs.Path

限定符和类型	常量字段	值
public static final String	CUR_DIR	"."
public static final String	SEPARATOR	"/"
public static final char	SEPARATOR_CHAR	47

org.apache.hadoop.fs.ftp.FTPFileSystem

限定符和类型	常量字段	值
public static final int	DEFAULT_BLOCK_SIZE	4096
public static final int	DEFAULT_BUFFER_SIZE	1048576

org.apache.hadoop.fs.permission.FsPermission

限定符和类型	常量字段	值
public static final int	DEFAULT_UMASK	18
public static final String	DEPRECATED_UMASK_LABEL	"dfs.umask"
public static final String	UMASK_LABEL	"dfs.umaskmode"

org.apache.hadoop.fs.shell.Count

限定符和类型	常量字段	值
public static final String	NAME	"count"
public static final String	USAGE	"-count[-q] <path>"

org.apache.hadoop.hdfs.DFSClient

限定符和类型	常量字段	值
public static final int	MAX_BLOCK_ACQUIRE_FAILURES	3

org.apache.hadoop.hdfs.DFSConfigKeys

限定符和类型	常量字段	值
public static final String	DFS_ADMIN	"dfs.cluster.administrators"
public static final int	DFS_BALANCER_MOVEDWINWIDTH_DEFAULT	5400000
public static final String	DFS_BALANCER_MOVEDWINWIDTH_KEY	"dfs.balancer.movedWinWidth"
public static final long	DFS_BLOCK_ACCESS_KEY_UPDATE_INTERVAL_DEFAULT	600L
public static final String	DFS_BLOCK_ACCESS_KEY_UPDATE_INTERVAL_KEY	"dfs.block.access.key.update.interval"
public static final boolean	DFS_BLOCK_ACCESS_TOKEN_ENABLE_DEFAULT	false
public static final String	DFS_BLOCK_ACCESS_TOKEN_ENABLE_KEY	"dfs.block.access.token.enable"
public static final long	DFS_BLOCK_ACCESS_TOKEN_LIFETIME_DEFAULT	600L
public static final String	DFS_BLOCK_ACCESS_TOKEN_LIFETIME_KEY	"dfs.block.access.token.lifetime"
public static final int	DFS_BLOCK_INVALIDATE_LIMIT_DEFAULT	100
public static final String	DFS_BLOCK_INVALIDATE_LIMIT_KEY	"dfs.block.invalidate.limit"
public static final String	DFS_BLOCK_LOCAL_PATH_ACCESS_USER_KEY	"dfs.block.local-path-access.user"
public static final long	DFS_BLOCK_SIZE_DEFAULT	67108864L
public static final String	DFS_BLOCK_SIZE_KEY	"dfs.block.size"
public static final int	DFS_BLOCKREPORT_INITIAL_DELAY_DEFAULT	0
public static final String	DFS_BLOCKREPORT_INITIAL_DELAY_KEY	"dfs.blockreport.initialDelay"
public static final long	DFS_BLOCKREPORT_INTERVAL_MSEC_DEFAULT	21600000L
public static final String	DFS_BLOCKREPORT_INTERVAL_MSEC_KEY	"dfs.blockreport.intervalMsec"
public static final int	DFS_BYTES_PER_CHECKSUM_DEFAULT	512
public static final String	DFS_BYTES_PER_CHECKSUM_KEY	"dfs.bytes-per-checksum"
public static final int	DFS_CLIENT_BLOCK_WRITE_LOCATEFOLLOWINGBLOCK_RETRIES_DEFAULT	5
public static final String	DFS_CLIENT_BLOCK_WRITE_LOCATEFOLLOWINGBLOCK_RETRIES_KEY	"dfs.client.block.write.locateFollowingBlock.retries"
public static final int	DFS_CLIENT_BLOCK_WRITE_RETRIES_DEFAULT	3
public static final String	DFS_CLIENT_BLOCK_WRITE_RETRIES_KEY	"dfs.client.block.write.retries"
public static final String	DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_DEFAULT	"ssl-client.xml"
public static final String	DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_KEY	"dfs.client.https.keystore.resource"
public static final boolean	DFS_CLIENT_HTTPS_NEED_AUTH_DEFAULT	false
public static final String	DFS_CLIENT_HTTPS_NEED_AUTH_KEY	"dfs.client.https.need-auth"
public static final String	DFS_CLIENT_LOCAL_INTERFACES	"dfs.client.local.interfaces"
public static final int	DFS_CLIENT_MAX_BLOCK_ACQUIRE_FAILURES_DEFAULT	3
public static final String	DFS_CLIENT_MAX_BLOCK_ACQUIRE_FAILURES_KEY	"dfs.client.max.block.acquire.failures"
public static final String	DFS_CLIENT_READ_PREFETCH_SIZE_KEY	"dfs.client.read.prefetch.size"
public static final boolean	DFS_CLIENT_READ_SHORTCIRCUIT_DEFAULT	false
public static final String	DFS_CLIENT_READ_SHORTCIRCUIT_KEY	"dfs.client.read.shortcircuit"
public static final boolean	DFS_CLIENT_READ_SHORTCIRCUIT_SKIP_CHECKSUM_DEFAULT	false
public static final String	DFS_CLIENT_READ_SHORTCIRCUIT_SKIP_CHECKSUM_KEY	"dfs.client.read.shortcircuit.skip.checksum"
public static final boolean	DFS_CLIENT_RETRY_POLICY_ENABLED_DEFAULT	false
public static final String	DFS_CLIENT_RETRY_POLICY_ENABLED_KEY	"dfs.client.retry.policy.enabled"
public static final String	DFS_CLIENT_RETRY_POLICY_SPEC_DEFAULT	"10000,6,60000,10"
public static final String	DFS_CLIENT_RETRY_POLICY_SPEC_KEY	"dfs.client.retry.policy.spec"
public static final String	DFS_CLIENT_SOCKET_TIMEOUT_KEY	"dfs.client.socket-timeout"
public static final String	DFS_CLIENT_USE_DN_HOSTNAME	"dfs.client.use.datanode.hostname"
public static final boolean	DFS_CLIENT_USE_DN_HOSTNAME_DEFAULT	false
public static final int	DFS_CLIENT_WRITE_PACKET_SIZE_DEFAULT	65536
public static final String	DFS_CLIENT_WRITE_PACKET_SIZE_KEY	"dfs.client-write-packet-size"
public static final String	DFS_DATANODE_ADDRESS_DEFAULT	"0.0.0.0:50010"
public static final String	DFS_DATANODE_ADDRESS_KEY	"dfs.datanode.address"
public static final long	DFS_DATANODE_BALANCE_BANDWIDTHPERSEC_DEFAULT	1048576L
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 int	DFS_DATANODE_DIRECTORYSCAN_INTERVAL_DEFAULT	21600
public static final String	DFS_DATANODE_DIRECTORYSCAN_INTERVAL_KEY	"dfs.datanode.directoryscan.interval"
public static final String	DFS_DATANODE_DNS_INTERFACE_DEFAULT	"default"
public static final String	DFS_DATANODE_DNS_INTERFACE_KEY	"dfs.datanode.dns.interface"
public static final String	DFS_DATANODE_DNS_NAMESERVER_DEFAULT	"default"
public static final String	DFS_DATANODE_DNS_NAMESERVER_KEY	"dfs.datanode.dns.nameserver"
public static final boolean	DFS_DATANODE_DROP_CACHE_BEHIND_READS_DEFAULT	false
public static final String	DFS_DATANODE_DROP_CACHE_BEHIND_READS_KEY	"dfs.datanode.drop.cache.behind.reads"
public static final boolean	DFS_DATANODE_DROP_CACHE_BEHIND_WRITES_DEFAULT	false
public static final String	DFS_DATANODE_DROP_CACHE_BEHIND_WRITES_KEY	"dfs.datanode.drop.cache.behind.writes"
public static final long	DFS_DATANODE_DU_RESERVED_DEFAULT	0L
public static final String	DFS_DATANODE_DU_RESERVED_KEY	"dfs.datanode.du.reserved"
public static final int	DFS_DATANODE_HANDLER_COUNT_DEFAULT	3
public static final String	DFS_DATANODE_HANDLER_COUNT_KEY	"dfs.datanode.handler.count"
public static final String	DFS_DATANODE_HOST_NAME_KEY	"dfs.datanode.hostname"
public static final String	DFS_DATANODE_HTTP_ADDRESS_DEFAULT	"0.0.0.0:50075"
public static final String	DFS_DATANODE_HTTP_ADDRESS_KEY	"dfs.datanode.http.address"
public static final String	DFS_DATANODE_HTTPS_ADDRESS_DEFAULT	"0.0.0.0:50475"
public static final String	DFS_DATANODE_HTTPS_ADDRESS_KEY	"dfs.datanode.https.address"
public static final String	DFS_DATANODE_IPC_ADDRESS_DEFAULT	"0.0.0.0:50020"
public static final String	DFS_DATANODE_IPC_ADDRESS_KEY	"dfs.datanode.ipc.address"
public static final String	DFS_DATANODE_KEYTAB_FILE_KEY	"dfs.datanode.keytab.file"
public static final int	DFS_DATANODE_MAX_XCIEVERS_DEFAULT	256
public static final String	DFS_DATANODE_MAX_XCIEVERS_KEY	"dfs.datanode.max.xcievers"
public static final int	DFS_DATANODE_NUMBLOCKS_DEFAULT	64
public static final String	DFS_DATANODE_NUMBLOCKS_KEY	"dfs.datanode.numblocks"
public static final String	DFS_DATANODE_PLUGINS_KEY	"dfs.datanode.plugins"
public static final long	DFS_DATANODE_READAHEAD_BYTES_DEFAULT	4194304L
public static final String	DFS_DATANODE_READAHEAD_BYTES_KEY	"dfs.datanode.readahead.bytes"
public static final int	DFS_DATANODE_SCAN_PERIOD_HOURS_DEFAULT	0
public static final String	DFS_DATANODE_SCAN_PERIOD_HOURS_KEY	"dfs.datanode.scan.period.hours"
public static final long	DFS_DATANODE_SIMULATEDDATASTORAGE_CAPACITY_DEFAULT	2199023255552L
public static final String	DFS_DATANODE_SIMULATEDDATASTORAGE_CAPACITY_KEY	"dfs.datanode.simulateddatastorage.capacity"
public static final boolean	DFS_DATANODE_SIMULATEDDATASTORAGE_DEFAULT	false
public static final String	DFS_DATANODE_SIMULATEDDATASTORAGE_KEY	"dfs.datanode.simulateddatastorage"
public static final String	DFS_DATANODE_SOCKET_WRITE_TIMEOUT_KEY	"dfs.datanode.socket.write.timeout"
public static final String	DFS_DATANODE_STARTUP_KEY	"dfs.datanode.startup"
public static final String	DFS_DATANODE_STORAGEID_KEY	"dfs.datanode.StorageId"
public static final boolean	DFS_DATANODE_SYNC_BEHIND_WRITES_DEFAULT	false
public static final String	DFS_DATANODE_SYNC_BEHIND_WRITES_KEY	"dfs.datanode.sync.behind.writes"
public static final boolean	DFS_DATANODE_SYNCONCLOSE_DEFAULT	false
public static final String	DFS_DATANODE_SYNCONCLOSE_KEY	"dfs.datanode.synconclose"
public static final boolean	DFS_DATANODE_TRANSFERTO_ALLOWED_DEFAULT	true
public static final String	DFS_DATANODE_TRANSFERTO_ALLOWED_KEY	"dfs.datanode.transferTo.allowed"
public static final String	DFS_DATANODE_USE_DN_HOSTNAME	"dfs.datanode.use.datanode.hostname"
public static final boolean	DFS_DATANODE_USE_DN_HOSTNAME_DEFAULT	false
public static final String	DFS_DATANODE_USER_NAME_KEY	"dfs.datanode.kerberos.principal"
public static final int	DFS_DEFAULT_CHUNK_VIEW_SIZE_DEFAULT	32768
public static final String	DFS_DEFAULT_CHUNK_VIEW_SIZE_KEY	"dfs.default.chunk.view.size"
public static final int	DFS_DF_INTERVAL_DEFAULT	60000
public static final String	DFS_DF_INTERVAL_KEY	"dfs.df.interval"
public static final long	DFS_HEARTBEAT_INTERVAL_DEFAULT	3L
public static final String	DFS_HEARTBEAT_INTERVAL_KEY	"dfs.heartbeat.interval"
public static final boolean	DFS_HTTPS_ENABLE_DEFAULT	false
public static final String	DFS_HTTPS_ENABLE_KEY	"dfs.https.enable"
public static final long	DFS_IMAGE_TRANSFER_RATE_DEFAULT	0L
public static final String	DFS_IMAGE_TRANSFER_RATE_KEY	"dfs.image.transfer.bandwidthPerSec"
public static final String	DFS_LIST_LIMIT	"dfs.ls.limit"
public static final int	DFS_LIST_LIMIT_DEFAULT	1000
public static final int	DFS_MAX_CORRUPT_FILES_RETURNED_DEFAULT	500
public static final String	DFS_MAX_CORRUPT_FILES_RETURNED_KEY	"dfs.corruptfilesreturned.max"
public static final String	DFS_METRICS_SESSION_ID_KEY	"dfs.metrics.session-id"
public static final long	DFS_NAMENODE_ACCESSTIME_PRECISION_DEFAULT	3600000L
public static final String	DFS_NAMENODE_ACCESSTIME_PRECISION_KEY	"dfs.namenode.accesstime.precision"
public static final boolean	DFS_NAMENODE_AVOID_STALE_DATANODE_FOR_READ_DEFAULT	false
public static final String	DFS_NAMENODE_AVOID_STALE_DATANODE_FOR_READ_KEY	"dfs.namenode.avoid.read.stale.datanode"
public static final boolean	DFS_NAMENODE_AVOID_STALE_DATANODE_FOR_WRITE_DEFAULT	false
public static final String	DFS_NAMENODE_AVOID_STALE_DATANODE_FOR_WRITE_KEY	"dfs.namenode.avoid.write.stale.datanode"
public static final String	DFS_NAMENODE_BACKUP_ADDRESS_DEFAULT	"localhost:50100"
public static final String	DFS_NAMENODE_BACKUP_ADDRESS_KEY	"dfs.namenode.backup.address"
public static final String	DFS_NAMENODE_BACKUP_HTTP_ADDRESS_DEFAULT	"0.0.0.0:50105"
public static final String	DFS_NAMENODE_BACKUP_HTTP_ADDRESS_KEY	"dfs.namenode.backup.http-address"
public static final String	DFS_NAMENODE_BACKUP_SERVICE_RPC_ADDRESS_KEY	"dfs.namenode.backup.dnrpc-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 long	DFS_NAMENODE_CHECKPOINT_PERIOD_DEFAULT	3600L
public static final String	DFS_NAMENODE_CHECKPOINT_PERIOD_KEY	"dfs.namenode.checkpoint.period"
public static final long	DFS_NAMENODE_CHECKPOINT_SIZE_DEFAULT	4194304L
public static final String	DFS_NAMENODE_CHECKPOINT_SIZE_KEY	"dfs.namenode.checkpoint.size"
public static final int	DFS_NAMENODE_DECOMMISSION_INTERVAL_DEFAULT	30
public static final String	DFS_NAMENODE_DECOMMISSION_INTERVAL_KEY	"dfs.namenode.decommission.interval"
public static final int	DFS_NAMENODE_DECOMMISSION_NODES_PER_INTERVAL_DEFAULT	5
public static final String	DFS_NAMENODE_DECOMMISSION_NODES_PER_INTERVAL_KEY	"dfs.namenode.decommission.nodes.per.interval"
public static final long	DFS_NAMENODE_DELEGATION_KEY_UPDATE_INTERVAL_DEFAULT	86400000L
public static final String	DFS_NAMENODE_DELEGATION_KEY_UPDATE_INTERVAL_KEY	"dfs.namenode.delegation.key.update-interval"
public static final boolean	DFS_NAMENODE_DELEGATION_TOKEN_ALWAYS_USE_DEFAULT	false
public static final String	DFS_NAMENODE_DELEGATION_TOKEN_ALWAYS_USE_KEY	"dfs.namenode.delegation.token.always-use"
public static final long	DFS_NAMENODE_DELEGATION_TOKEN_MAX_LIFETIME_DEFAULT	604800000L
public static final String	DFS_NAMENODE_DELEGATION_TOKEN_MAX_LIFETIME_KEY	"dfs.namenode.delegation.token.max-lifetime"
public static final long	DFS_NAMENODE_DELEGATION_TOKEN_RENEW_INTERVAL_DEFAULT	86400000L
public static final String	DFS_NAMENODE_DELEGATION_TOKEN_RENEW_INTERVAL_KEY	"dfs.namenode.delegation.token.renew-interval"
public static final String	DFS_NAMENODE_EDITS_DIR_KEY	"dfs.namenode.edits.dir"
public static final int	DFS_NAMENODE_EDITS_TOLERATION_LENGTH_DEFAULT	0
public static final String	DFS_NAMENODE_EDITS_TOLERATION_LENGTH_KEY	"dfs.namenode.edits.toleration.length"
public static final int	DFS_NAMENODE_HANDLER_COUNT_DEFAULT	10
public static final String	DFS_NAMENODE_HANDLER_COUNT_KEY	"dfs.namenode.handler.count"
public static final int	DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_DEFAULT	300000
public static final String	DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_KEY	"dfs.namenode.heartbeat.recheck-interval"
public static final String	DFS_NAMENODE_HOSTS_EXCLUDE_KEY	"dfs.namenode.hosts.exclude"
public static final String	DFS_NAMENODE_HOSTS_KEY	"dfs.namenode.hosts"
public static final String	DFS_NAMENODE_HTTP_ADDRESS_DEFAULT	"0.0.0.0:50070"
public static final String	DFS_NAMENODE_HTTP_ADDRESS_KEY	"dfs.namenode.http-address"
public static final int	DFS_NAMENODE_HTTP_PORT_DEFAULT	50070
public static final String	DFS_NAMENODE_HTTP_PORT_KEY	"dfs.http.port"
public static final String	DFS_NAMENODE_HTTPS_ADDRESS_DEFAULT	"0.0.0.0:50470"
public static final String	DFS_NAMENODE_HTTPS_ADDRESS_KEY	"dfs.namenode.https-address"
public static final int	DFS_NAMENODE_HTTPS_PORT_DEFAULT	50470
public static final String	DFS_NAMENODE_HTTPS_PORT_KEY	"dfs.https.port"
public static final String	DFS_NAMENODE_INTERNAL_SPENGO_USER_NAME_KEY	"dfs.namenode.kerberos.internal.spnego.principal"
public static final String	DFS_NAMENODE_INVALIDATE_WORK_PCT_PER_ITERATION	"dfs.namenode.invalidate.work.pct.per.iteration"
public static final float	DFS_NAMENODE_INVALIDATE_WORK_PCT_PER_ITERATION_DEFAULT	0.3199999928474426f
public static final String	DFS_NAMENODE_KEYTAB_FILE_KEY	"dfs.namenode.keytab.file"
public static final String	DFS_NAMENODE_KRB_HTTPS_USER_NAME_KEY	"dfs.namenode.kerberos.https.principal"
public static final long	DFS_NAMENODE_MAX_OBJECTS_DEFAULT	0L
public static final String	DFS_NAMENODE_MAX_OBJECTS_KEY	"dfs.namenode.max.objects"
public static final int	DFS_NAMENODE_NAME_CACHE_THRESHOLD_DEFAULT	10
public static final String	DFS_NAMENODE_NAME_CACHE_THRESHOLD_KEY	"dfs.namenode.name.cache.threshold"
public static final String	DFS_NAMENODE_NAME_DIR_KEY	"dfs.namenode.name.dir"
public static final boolean	DFS_NAMENODE_NAME_DIR_RESTORE_DEFAULT	false
public static final String	DFS_NAMENODE_NAME_DIR_RESTORE_KEY	"dfs.namenode.name.dir.restore"
public static final String	DFS_NAMENODE_PLUGINS_KEY	"dfs.namenode.plugins"
public static final boolean	DFS_NAMENODE_REPLICATION_CONSIDERLOAD_DEFAULT	true
public static final String	DFS_NAMENODE_REPLICATION_CONSIDERLOAD_KEY	"dfs.namenode.replication.considerLoad"
public static final int	DFS_NAMENODE_REPLICATION_INTERVAL_DEFAULT	3
public static final String	DFS_NAMENODE_REPLICATION_INTERVAL_KEY	"dfs.namenode.replication.interval"
public static final int	DFS_NAMENODE_REPLICATION_MAX_STREAMS_DEFAULT	2
public static final String	DFS_NAMENODE_REPLICATION_MAX_STREAMS_KEY	"dfs.namenode.replication.max-streams"
public static final int	DFS_NAMENODE_REPLICATION_MIN_DEFAULT	1
public static final String	DFS_NAMENODE_REPLICATION_MIN_KEY	"dfs.namenode.replication.min"
public static final int	DFS_NAMENODE_REPLICATION_PENDING_TIMEOUT_SEC_DEFAULT	-1
public static final String	DFS_NAMENODE_REPLICATION_PENDING_TIMEOUT_SEC_KEY	"dfs.namenode.replication.pending.timeout-sec"
public static final String	DFS_NAMENODE_REPLICATION_WORK_MULTIPLIER_PER_ITERATION	"dfs.namenode.replication.work.multiplier.per.iteration"
public static final int	DFS_NAMENODE_REPLICATION_WORK_MULTIPLIER_PER_ITERATION_DEFAULT	2
public static final String	DFS_NAMENODE_RPC_ADDRESS_KEY	"dfs.namenode.rpc-address"
public static final int	DFS_NAMENODE_SAFEMODE_EXTENSION_DEFAULT	30000
public static final String	DFS_NAMENODE_SAFEMODE_EXTENSION_KEY	"dfs.namenode.safemode.extension"
public static final int	DFS_NAMENODE_SAFEMODE_MIN_DATANODES_DEFAULT	0
public static final String	DFS_NAMENODE_SAFEMODE_MIN_DATANODES_KEY	"dfs.namenode.safemode.min.datanodes"
public static final float	DFS_NAMENODE_SAFEMODE_THRESHOLD_PCT_DEFAULT	0.9990000128746033f
public static final String	DFS_NAMENODE_SAFEMODE_THRESHOLD_PCT_KEY	"dfs.namenode.safemode.threshold-pct"
public static final String	DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_DEFAULT	"0.0.0.0:50090"
public static final String	DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_KEY	"dfs.namenode.secondary.http-address"
public static final int	DFS_NAMENODE_SERVICE_HANDLER_COUNT_DEFAULT	10
public static final String	DFS_NAMENODE_SERVICE_HANDLER_COUNT_KEY	"dfs.namenode.service.handler.count"
public static final String	DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY	"dfs.namenode.servicerpc-address"
public static final long	DFS_NAMENODE_STALE_DATANODE_INTERVAL_DEFAULT	30000L
public static final String	DFS_NAMENODE_STALE_DATANODE_INTERVAL_KEY	"dfs.namenode.stale.datanode.interval"
public static final int	DFS_NAMENODE_STALE_DATANODE_MINIMUM_INTERVAL_DEFAULT	3
public static final String	DFS_NAMENODE_STALE_DATANODE_MINIMUM_INTERVAL_KEY	"dfs.namenode.stale.datanode.minimum.interval"
public static final String	DFS_NAMENODE_STARTUP_KEY	"dfs.namenode.startup"
public static final int	DFS_NAMENODE_UPGRADE_PERMISSION_DEFAULT	511
public static final String	DFS_NAMENODE_UPGRADE_PERMISSION_KEY	"dfs.namenode.upgrade.permission"
public static final float	DFS_NAMENODE_USE_STALE_DATANODE_FOR_WRITE_RATIO_DEFAULT	0.5f
public static final String	DFS_NAMENODE_USE_STALE_DATANODE_FOR_WRITE_RATIO_KEY	"dfs.namenode.write.stale.datanode.ratio"
public static final String	DFS_NAMENODE_USER_NAME_KEY	"dfs.namenode.kerberos.principal"
public static final boolean	DFS_PERMISSIONS_ENABLED_DEFAULT	true
public static final String	DFS_PERMISSIONS_ENABLED_KEY	"dfs.permissions.enabled"
public static final String	DFS_PERMISSIONS_SUPERUSERGROUP_DEFAULT	"supergroup"
public static final String	DFS_PERMISSIONS_SUPERUSERGROUP_KEY	"dfs.permissions.superusergroup"
public static final boolean	DFS_PERSIST_BLOCKS_DEFAULT	false
public static final String	DFS_PERSIST_BLOCKS_KEY	"dfs.persist.blocks"
public static final short	DFS_REPLICATION_DEFAULT	3
public static final String	DFS_REPLICATION_KEY	"dfs.replication"
public static final int	DFS_REPLICATION_MAX_DEFAULT	512
public static final String	DFS_REPLICATION_MAX_KEY	"dfs.replication.max"
public static final String	DFS_SECONDARY_NAMENODE_INTERNAL_SPENGO_USER_NAME_KEY	"dfs.secondary.namenode.kerberos.internal.spnego.principal"
public static final String	DFS_SECONDARY_NAMENODE_KEYTAB_FILE_KEY	"dfs.secondary.namenode.keytab.file"
public static final String	DFS_SECONDARY_NAMENODE_KRB_HTTPS_USER_NAME_KEY	"dfs.secondary.namenode.kerberos.https.principal"
public static final String	DFS_SECONDARY_NAMENODE_USER_NAME_KEY	"dfs.secondary.namenode.kerberos.principal"
public static final String	DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_DEFAULT	"ssl-server.xml"
public static final String	DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY	"dfs.https.server.keystore.resource"
public static final int	DFS_STREAM_BUFFER_SIZE_DEFAULT	4096
public static final String	DFS_STREAM_BUFFER_SIZE_KEY	"dfs.stream-buffer-size"
public static final String	DFS_WEB_AUTHENTICATION_KERBEROS_KEYTAB_KEY	"dfs.web.authentication.kerberos.keytab"
public static final String	DFS_WEB_AUTHENTICATION_KERBEROS_PRINCIPAL_KEY	"dfs.web.authentication.kerberos.principal"
public static final String	DFS_WEB_UGI_KEY	"dfs.web.ugi"
public static final boolean	DFS_WEBHDFS_ENABLED_DEFAULT	false
public static final String	DFS_WEBHDFS_ENABLED_KEY	"dfs.webhdfs.enabled"

org.apache.hadoop.hdfs.HftpFileSystem

限定符和类型	常量字段	值
public static final String	HFTP_DATE_FORMAT	"yyyy-MM-dd\'T\'HH:mm:ssZ"
public static final String	HFTP_TIMEZONE	"UTC"

org.apache.hadoop.hdfs.protocol.Block

限定符和类型	常量字段	值
public static final long	GRANDFATHER_GENERATION_STAMP	0L

org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol

限定符和类型	常量字段	值
public static final long	versionID	4L

org.apache.hadoop.hdfs.protocol.ClientProtocol

限定符和类型	常量字段	值
public static final int	GET_STATS_CAPACITY_IDX	0
public static final int	GET_STATS_CORRUPT_BLOCKS_IDX	4
public static final int	GET_STATS_MISSING_BLOCKS_IDX	5
public static final int	GET_STATS_REMAINING_IDX	2
public static final int	GET_STATS_UNDER_REPLICATED_IDX	3
public static final int	GET_STATS_USED_IDX	1
public static final long	versionID	61L

org.apache.hadoop.hdfs.protocol.DataTransferProtocol

限定符和类型	常量字段	值
public static final int	DATA_TRANSFER_VERSION	17
public static final byte	OP_BLOCK_CHECKSUM	85
public static final byte	OP_COPY_BLOCK	84
public static final byte	OP_READ_BLOCK	81
public static final byte	OP_READ_METADATA	82
public static final byte	OP_REPLACE_BLOCK	83
public static final int	OP_STATUS_CHECKSUM_OK	6
public static final int	OP_STATUS_ERROR	1
public static final int	OP_STATUS_ERROR_ACCESS_TOKEN	5
public static final int	OP_STATUS_ERROR_CHECKSUM	2
public static final int	OP_STATUS_ERROR_EXISTS	4
public static final int	OP_STATUS_ERROR_INVALID	3
public static final int	OP_STATUS_SUCCESS	0
public static final byte	OP_WRITE_BLOCK	80

org.apache.hadoop.hdfs.protocol.DataTransferProtocol.PipelineAck

限定符和类型	常量字段	值
public static final long	UNKOWN_SEQNO	-2L

org.apache.hadoop.hdfs.protocol.DSQuotaExceededException

限定符和类型	常量字段	值
protected static final long	serialVersionUID	1L

org.apache.hadoop.hdfs.protocol.FSConstants

限定符和类型	常量字段	值
public static final long	BLOCKREPORT_INITIAL_DELAY	0L
public static final long	BLOCKREPORT_INTERVAL	3600000L
public static final long	DEFAULT_BLOCK_SIZE	67108864L
public static final int	DEFAULT_DATA_SOCKET_SIZE	131072
public static final long	HEARTBEAT_INTERVAL	3L
public static final int	LAYOUT_VERSION	-41
public static final long	LEASE_HARDLIMIT_PERIOD	3600000L
public static final long	LEASE_RECOVER_PERIOD	10000L
public static final long	LEASE_SOFTLIMIT_PERIOD	60000L
public static final int	MAX_PATH_DEPTH	1000
public static final int	MAX_PATH_LENGTH	8000
public static final int	MIN_BLOCKS_FOR_WRITE	5
public static final long	QUOTA_DONT_SET	9223372036854775807L
public static final long	QUOTA_RESET	-1L
public static final int	SIZE_OF_INTEGER	4

org.apache.hadoop.hdfs.protocol.LayoutVersion

限定符和类型	常量字段	值
public static final int	BUGFIX_HDFS_2991_VERSION	-40

org.apache.hadoop.hdfs.protocol.NSQuotaExceededException

限定符和类型	常量字段	值
protected static final long	serialVersionUID	1L

org.apache.hadoop.hdfs.protocol.QuotaExceededException

限定符和类型	常量字段	值
protected static final long	serialVersionUID	1L

org.apache.hadoop.hdfs.server.balancer.Balancer

限定符和类型	常量字段	值
public static final int	ALREADY_RUNNING	-1
public static final int	ILLEGAL_ARGS	-5
public static final int	IO_EXCEPTION	-4
public static final int	MAX_NO_PENDING_BLOCK_ITERATIONS	5
public static final int	MAX_NUM_CONCURRENT_MOVES	5
public static final int	NO_MOVE_BLOCK	-2
public static final int	NO_MOVE_PROGRESS	-3
public static final int	SUCCESS	1

org.apache.hadoop.hdfs.server.common.GenerationStamp

限定符和类型	常量字段	值
public static final long	FIRST_VALID_STAMP	1000L
public static final long	WILDCARD_STAMP	1L

org.apache.hadoop.hdfs.server.common.HdfsConstants

限定符和类型	常量字段	值
public static final String	NN_RECOVERY_LEASEHOLDER	"NN_Recovery"
public static final int	READ_TIMEOUT	60000
public static final int	READ_TIMEOUT_EXTENSION	3000
public static final int	WRITE_TIMEOUT	480000
public static final int	WRITE_TIMEOUT_EXTENSION	5000

org.apache.hadoop.hdfs.server.common.Storage

限定符和类型	常量字段	值
protected static final int	LAST_PRE_UPGRADE_LAYOUT_VERSION	-3
protected static final String	LAST_UPGRADABLE_HADOOP_VERSION	"Hadoop-0.14"
public static final int	LAST_UPGRADABLE_LAYOUT_VERSION	-7
public static final int	PRE_GENERATIONSTAMP_LAYOUT_VERSION	-13
public static final String	STORAGE_DIR_CURRENT	"current"
protected static final String	STORAGE_FILE_VERSION	"VERSION"

org.apache.hadoop.hdfs.server.datanode.DataNode

限定符和类型	常量字段	值
public static final String	DATA_DIR_KEY	"dfs.data.dir"
public static final String	DATA_DIR_PERMISSION_KEY	"dfs.datanode.data.dir.perm"
public static final String	DN_CLIENTTRACE_FORMAT	"src: %s, dest: %s, bytes: %s, op: %s, cliID: %s, offset: %s, srvID: %s, blockid: %s, duration: %s"
public static final String	EMPTY_DEL_HINT	""
public static final int	PKT_HEADER_LEN	21

org.apache.hadoop.hdfs.server.datanode.FSDataset

限定符和类型	常量字段	值
public static final String	METADATA_EXTENSION	".meta"
public static final short	METADATA_VERSION	1

org.apache.hadoop.hdfs.server.namenode.CancelDelegationTokenServlet

限定符和类型	常量字段	值
public static final String	PATH_SPEC	"/cancelDelegationToken"
public static final String	TOKEN	"token"

org.apache.hadoop.hdfs.server.namenode.FSNamesystem

限定符和类型	常量字段	值
public static final String	AUDIT_FORMAT	"ugi=%s\tip=%s\tcmd=%s\tsrc=%s\tdst=%s\tperm=%s"
public static final int	DEFAULT_INITIAL_MAP_CAPACITY	16
public static final float	DEFAULT_MAP_LOAD_FACTOR	0.75f

org.apache.hadoop.hdfs.server.namenode.GetDelegationTokenServlet

限定符和类型	常量字段	值
public static final String	PATH_SPEC	"/getDelegationToken"
public static final String	RENEWER	"renewer"

org.apache.hadoop.hdfs.server.namenode.JspHelper

限定符和类型	常量字段	值
public static final String	CURRENT_CONF	"current.conf"
public static final String	DELEGATION_PARAMETER_NAME	"delegation"
public static final String	WEB_UGI_PROPERTY_NAME	"dfs.web.ugi"

org.apache.hadoop.hdfs.server.namenode.MetaRecoveryContext

限定符和类型	常量字段	值
public static final int	FORCE_ALL	2
public static final int	FORCE_FIRST_CHOICE	1
public static final int	FORCE_NONE	0

org.apache.hadoop.hdfs.server.namenode.NameNode

限定符和类型	常量字段	值
public static final int	DEFAULT_PORT	8020

org.apache.hadoop.hdfs.server.namenode.NamenodeFsck

限定符和类型	常量字段	值
public static final String	CORRUPT_STATUS	"is CORRUPT"
public static final String	FAILURE_STATUS	"FAILED"
public static final String	HEALTHY_STATUS	"is HEALTHY"
public static final String	NONEXISTENT_STATUS	"does not exist"

org.apache.hadoop.hdfs.server.namenode.RenewDelegationTokenServlet

限定符和类型	常量字段	值
public static final String	PATH_SPEC	"/renewDelegationToken"
public static final String	TOKEN	"token"

org.apache.hadoop.hdfs.server.namenode.StreamFile

限定符和类型	常量字段	值
public static final String	CONTENT_LENGTH	"Content-Length"

org.apache.hadoop.hdfs.server.protocol.BalancerBandwidthCommand

限定符和类型	常量字段	值
public static final int	BBC_VERSION	1

org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol

限定符和类型	常量字段	值
public static final int	DISK_ERROR	1
public static final int	DNA_ACCESSKEYUPDATE	7
public static final int	DNA_BALANCERBANDWIDTHUPDATE	8
public static final int	DNA_FINALIZE	5
public static final int	DNA_INVALIDATE	2
public static final int	DNA_RECOVERBLOCK	6
public static final int	DNA_REGISTER	4
public static final int	DNA_SHUTDOWN	3
public static final int	DNA_TRANSFER	1
public static final int	DNA_UNKNOWN	0
public static final int	FATAL_DISK_ERROR	3
public static final int	INVALID_BLOCK	2
public static final int	NOTIFY	0
public static final long	versionID	26L

org.apache.hadoop.hdfs.server.protocol.InterDatanodeProtocol

限定符和类型	常量字段	值
public static final long	versionID	3L

org.apache.hadoop.hdfs.server.protocol.NamenodeProtocol

限定符和类型	常量字段	值
public static final long	versionID	3L

org.apache.hadoop.hdfs.server.protocol.UpgradeCommand

限定符和类型	常量字段	值
public static final int	UC_ACTION_REPORT_STATUS	100
public static final int	UC_ACTION_START_UPGRADE	101

org.apache.hadoop.hdfs.web.WebHdfsFileSystem

限定符和类型	常量字段	值
public static final String	PATH_PREFIX	"/webhdfs/v1"
public static final String	SCHEME	"webhdfs"
public static final int	VERSION	1

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

限定符和类型	常量字段	值
public static final String	DEFAULT	"-1"
public static final String	NAME	"accesstime"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	"null"
public static final String	NAME	"blocksize"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	"null"
public static final String	NAME	"buffersize"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	""
public static final String	NAME	"sources"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	""
public static final String	NAME	"delegation"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	""
public static final String	NAME	"destination"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	""
public static final String	NAME	"doas"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	""
public static final String	NAME	"group"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	"null"
public static final String	NAME	"op"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	"null"
public static final String	NAME	"length"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	"-1"
public static final String	NAME	"modificationtime"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	"0"
public static final String	NAME	"offset"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	"false"
public static final String	NAME	"overwrite"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	""
public static final String	NAME	"owner"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	"null"
public static final String	NAME	"permission"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	"false"
public static final String	NAME	"recursive"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	"null"
public static final String	NAME	"renewer"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	"null"
public static final String	NAME	"replication"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	""
public static final String	NAME	"token"

org.apache.hadoop.hdfs.web.resources.UriFsPathParam

限定符和类型	常量字段	值
public static final String	NAME	"path"

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

限定符和类型	常量字段	值
public static final String	DEFAULT	""
public static final String	NAME	"user.name"

org.apache.hadoop.http.HttpServer

限定符和类型	常量字段	值
public static final String	CONF_CONTEXT_ATTRIBUTE	"hadoop.conf"
public static final String	KRB5_FILTER	"krb5Filter"
public static final String	SPNEGO_FILTER	"SpnegoFilter"

org.apache.hadoop.io.BloomMapFile

限定符和类型	常量字段	值
public static final String	BLOOM_FILE_NAME	"bloom"
public static final int	HASH_COUNT	5

org.apache.hadoop.io.MapFile

限定符和类型	常量字段	值
public static final String	DATA_FILE_NAME	"data"
public static final String	INDEX_FILE_NAME	"index"

org.apache.hadoop.io.MD5Hash

限定符和类型	常量字段	值
public static final int	MD5_LEN	16

org.apache.hadoop.io.SequenceFile

限定符和类型	常量字段	值
public static final int	SYNC_INTERVAL	2000

org.apache.hadoop.io.compress.bzip2.BZip2Constants

限定符和类型	常量字段	值
public static final int	baseBlockSize	100000
public static final int	END_OF_BLOCK	-2
public static final int	END_OF_STREAM	-1
public static final int	G_SIZE	50
public static final int	MAX_ALPHA_SIZE	258
public static final int	MAX_CODE_LEN	23
public static final int	MAX_SELECTORS	18002
public static final int	N_GROUPS	6
public static final int	N_ITERS	4
public static final int	NUM_OVERSHOOT_BYTES	20
public static final int	RUNA	0
public static final int	RUNB	1

org.apache.hadoop.io.compress.bzip2.CBZip2InputStream

限定符和类型	常量字段	值
public static final long	BLOCK_DELIMITER	54156738319193L
public static final long	EOS_DELIMITER	25779555029136L

org.apache.hadoop.io.compress.bzip2.CBZip2OutputStream

限定符和类型	常量字段	值
protected static final int	CLEARMASK	-2097153
protected static final int	DEPTH_THRESH	10
protected static final int	GREATER_ICOST	15
protected static final int	LESSER_ICOST	0
public static final int	MAX_BLOCKSIZE	9
public static final int	MIN_BLOCKSIZE	1
protected static final int	QSORT_STACK_SIZE	1000
protected static final int	SETMASK	2097152
protected static final int	SMALL_THRESH	20
protected static final int	WORK_FACTOR	30

org.apache.hadoop.io.file.tfile.TFile

限定符和类型	常量字段	值
public static final String	COMPARATOR_JCLASS	"jclass:"
public static final String	COMPARATOR_MEMCMP	"memcmp"
public static final String	COMPRESSION_GZ	"gz"
public static final String	COMPRESSION_LZO	"lzo"
public static final String	COMPRESSION_NONE	"none"

org.apache.hadoop.io.nativeio.NativeIO

限定符和类型	常量字段	值
public static final int	O_APPEND	1024
public static final int	O_ASYNC	8192
public static final int	O_CREAT	64
public static final int	O_EXCL	128
public static final int	O_FSYNC	4096
public static final int	O_NDELAY	2048
public static final int	O_NOCTTY	256
public static final int	O_NONBLOCK	2048
public static final int	O_RDONLY	0
public static final int	O_RDWR	2
public static final int	O_SYNC	4096
public static final int	O_TRUNC	512
public static final int	O_WRONLY	1
public static final int	POSIX_FADV_DONTNEED	4
public static final int	POSIX_FADV_NOREUSE	5
public static final int	POSIX_FADV_NORMAL	0
public static final int	POSIX_FADV_RANDOM	1
public static final int	POSIX_FADV_SEQUENTIAL	2
public static final int	POSIX_FADV_WILLNEED	3
public static final int	SYNC_FILE_RANGE_WAIT_AFTER	4
public static final int	SYNC_FILE_RANGE_WAIT_BEFORE	1
public static final int	SYNC_FILE_RANGE_WRITE	2

org.apache.hadoop.io.nativeio.NativeIO.Stat

限定符和类型	常量字段	值
public static final int	S_IFBLK	24576
public static final int	S_IFCHR	8192
public static final int	S_IFDIR	16384
public static final int	S_IFIFO	4096
public static final int	S_IFLNK	40960
public static final int	S_IFMT	61440
public static final int	S_IFREG	32768
public static final int	S_IFSOCK	49152
public static final int	S_IFWHT	57344
public static final int	S_IRUSR	256
public static final int	S_ISGID	1024
public static final int	S_ISUID	2048
public static final int	S_ISVTX	512
public static final int	S_IWUSR	128
public static final int	S_IXUSR	64

org.apache.hadoop.ipc.Client

限定符和类型	常量字段	值
public static final int	IPC_CLIENT_CONNECT_MAX_RETRIES_DEFAULT	10
public static final String	IPC_CLIENT_CONNECT_MAX_RETRIES_KEY	"ipc.client.connect.max.retries"

org.apache.hadoop.ipc.Server

限定符和类型	常量字段	值
public static final byte	CURRENT_VERSION	4

org.apache.hadoop.mapred.AdminOperationsProtocol

限定符和类型	常量字段	值
public static final long	versionID	3L

org.apache.hadoop.mapred.ClusterStatus

限定符和类型	常量字段	值
public static final long	UNINITIALIZED_MEMORY_VALUE	-1L

org.apache.hadoop.mapred.FileOutputCommitter

限定符和类型	常量字段	值
public static final String	SUCCEEDED_FILE_NAME	"_SUCCESS"
public static final String	TEMP_DIR_NAME	"_temporary"

org.apache.hadoop.mapred.JobClient

限定符和类型	常量字段	值
public static final long	COUNTER_UPDATE_INTERVAL	60000L
public static final long	DEFAULT_DISK_HEALTH_CHECK_INTERVAL	60000L
public static final int	FILE_NOT_FOUND	-1
public static final String	FOR_REDUCE_TASK	"for-reduce-task"
public static final String	FROM_MAP_TASK	"from-map-task"
public static final int	HEARTBEAT_INTERVAL_MIN	300
public static final String	MAP_OUTPUT_LENGTH	"Map-Output-Length"
public static final boolean	MAPREDUCE_CLIENT_RETRY_POLICY_ENABLED_DEFAULT	false
public static final String	MAPREDUCE_CLIENT_RETRY_POLICY_ENABLED_KEY	"mapreduce.jobclient.retry.policy.enabled"
public static final String	MAPREDUCE_CLIENT_RETRY_POLICY_SPEC_DEFAULT	"10000,6,60000,10"
public static final String	MAPREDUCE_CLIENT_RETRY_POLICY_SPEC_KEY	"mapreduce.jobclient.retry.policy.spec"
public static final String	RAW_MAP_OUTPUT_LENGTH	"Raw-Map-Output-Length"
public static final int	SUCCESS	0
public static final String	WORKDIR	"work"

org.apache.hadoop.mapred.JobConf

限定符和类型	常量字段	值
public static final String	DEFAULT_MAPRED_TASK_JAVA_OPTS	"-Xmx200m"
public static final boolean	DEFAULT_MAPREDUCE_RECOVER_JOB	true
public static final String	DEFAULT_QUEUE_NAME	"default"
public static final long	DISABLED_MEMORY_LIMIT	-1L
public static final String	MAPRED_JOB_MAP_MEMORY_MB_PROPERTY	"mapred.job.map.memory.mb"
public static final String	MAPRED_JOB_REDUCE_MEMORY_MB_PROPERTY	"mapred.job.reduce.memory.mb"
public static final String	MAPRED_LOCAL_DIR_PROPERTY	"mapred.local.dir"
public static final String	MAPRED_MAP_TASK_ENV	"mapred.map.child.env"
public static final String	MAPRED_MAP_TASK_JAVA_OPTS	"mapred.map.child.java.opts"
public static final String	MAPRED_MAP_TASK_ULIMIT	"mapred.map.child.ulimit"
public static final String	MAPRED_REDUCE_TASK_ENV	"mapred.reduce.child.env"
public static final String	MAPRED_REDUCE_TASK_JAVA_OPTS	"mapred.reduce.child.java.opts"
public static final String	MAPRED_REDUCE_TASK_ULIMIT	"mapred.reduce.child.ulimit"
public static final String	MAPRED_TASK_DEFAULT_MAXVMEM_PROPERTY	"mapred.task.default.maxvmem"
public static final String	MAPRED_TASK_ENV	"mapred.child.env"
public static final String	MAPRED_TASK_JAVA_OPTS	"mapred.child.java.opts"
public static final String	MAPRED_TASK_MAXPMEM_PROPERTY	"mapred.task.maxpmem"
public static final String	MAPRED_TASK_MAXVMEM_PROPERTY	"mapred.task.maxvmem"
public static final String	MAPRED_TASK_ULIMIT	"mapred.child.ulimit"
public static final String	MAPREDUCE_RECOVER_JOB	"mapreduce.job.restart.recover"
public static final String	UPPER_LIMIT_ON_TASK_VMEM_PROPERTY	"mapred.task.limit.maxvmem"
public static final String	WORKFLOW_ADJACENCY_PREFIX_PATTERN	"^mapreduce\\.workflow\\.adjacency\\..+"
public static final String	WORKFLOW_ADJACENCY_PREFIX_STRING	"mapreduce.workflow.adjacency."
public static final String	WORKFLOW_ID	"mapreduce.workflow.id"
public static final String	WORKFLOW_NAME	"mapreduce.workflow.name"
public static final String	WORKFLOW_NODE_NAME	"mapreduce.workflow.node.name"
public static final String	WORKFLOW_TAGS	"mapreduce.workflow.tags"

org.apache.hadoop.mapred.JobEndNotifier

限定符和类型	常量字段	值
public static final int	MAPREDUCE_JOBEND_NOTIFICATION_TIMEOUT_DEFAULT	5000

org.apache.hadoop.mapred.JobHistory

限定符和类型	常量字段	值
public static final int	JOB_NAME_TRIM_LENGTH	50

org.apache.hadoop.mapred.JobHistoryServer

限定符和类型	常量字段	值
public static final String	MAPRED_HISTORY_SERVER_EMBEDDED	"mapreduce.history.server.embedded"
public static final String	MAPRED_HISTORY_SERVER_HTTP_ADDRESS	"mapreduce.history.server.http.address"

org.apache.hadoop.mapred.JobLocalizer

限定符和类型	常量字段	值
protected static final String	JOB_LOCAL_CTXT	"mapred.job.local.dir"

org.apache.hadoop.mapred.JobStatus

限定符和类型	常量字段	值
public static final int	FAILED	3
public static final int	KILLED	5
public static final int	PREP	4
public static final int	RUNNING	1
public static final int	SUCCEEDED	2

org.apache.hadoop.mapred.JobTracker

限定符和类型	常量字段	值
public static final long	COUNTER_UPDATE_INTERVAL	60000L
public static final long	DEFAULT_DISK_HEALTH_CHECK_INTERVAL	60000L
public static final long	DELEGATION_KEY_UPDATE_INTERVAL_DEFAULT	86400000L
public static final String	DELEGATION_KEY_UPDATE_INTERVAL_KEY	"mapreduce.cluster.delegation.key.update-interval"
public static final long	DELEGATION_TOKEN_MAX_LIFETIME_DEFAULT	604800000L
public static final String	DELEGATION_TOKEN_MAX_LIFETIME_KEY	"mapreduce.cluster.delegation.token.max-lifetime"
public static final long	DELEGATION_TOKEN_RENEW_INTERVAL_DEFAULT	86400000L
public static final String	DELEGATION_TOKEN_RENEW_INTERVAL_KEY	"mapreduce.cluster.delegation.token.renew-interval"
public static final int	FILE_NOT_FOUND	-1
public static final String	FOR_REDUCE_TASK	"for-reduce-task"
public static final String	FROM_MAP_TASK	"from-map-task"
public static final int	HEARTBEAT_INTERVAL_MIN	300
public static final String	JT_KEYTAB_FILE	"mapreduce.jobtracker.keytab.file"
public static final String	JT_USER_NAME	"mapreduce.jobtracker.kerberos.principal"
public static final String	MAP_OUTPUT_LENGTH	"Map-Output-Length"
public static final String	MAPRED_CLUSTER_MAP_MEMORY_MB_PROPERTY	"mapred.cluster.map.memory.mb"
public static final String	MAPRED_CLUSTER_MAX_MAP_MEMORY_MB_PROPERTY	"mapred.cluster.max.map.memory.mb"
public static final String	MAPRED_CLUSTER_MAX_REDUCE_MEMORY_MB_PROPERTY	"mapred.cluster.max.reduce.memory.mb"
public static final String	MAPRED_CLUSTER_REDUCE_MEMORY_MB_PROPERTY	"mapred.cluster.reduce.memory.mb"
public static final String	MAX_USER_JOBCONF_SIZE_KEY	"mapred.user.jobconf.limit"
public static final String	RAW_MAP_OUTPUT_LENGTH	"Raw-Map-Output-Length"
public static final int	SUCCESS	0
public static final int	TRACKERS_OK	0
public static final int	UNKNOWN_TASKTRACKER	1
public static final long	versionID	31L
public static final long	versionID	28L
public static final String	WORKDIR	"work"

org.apache.hadoop.mapred.LocalJobRunner

限定符和类型	常量字段	值
public static final String	LOCAL_MAX_MAPS	"mapreduce.local.map.tasks.maximum"
public static final long	versionID	28L

org.apache.hadoop.mapred.SequenceFileInputFilter.MD5Filter

限定符和类型	常量字段	值
public static final int	MD5_LEN	16

org.apache.hadoop.mapred.SkipBadRecords

限定符和类型	常量字段	值
public static final String	COUNTER_GROUP	"SkippingTaskCounters"
public static final String	COUNTER_MAP_PROCESSED_RECORDS	"MapProcessedRecords"
public static final String	COUNTER_REDUCE_PROCESSED_GROUPS	"ReduceProcessedGroups"

org.apache.hadoop.mapred.Task

限定符和类型	常量字段	值
public static final long	DEFAULT_MR_COMBINE_RECORDS_BEFORE_PROGRESS	10000L
protected static final String	FILESYSTEM_COUNTER_GROUP	"FileSystemCounters"
public static final String	MR_COMBINE_RECORDS_BEFORE_PROGRESS	"mapred.combine.recordsBeforeProgress"
public static final int	PROGRESS_INTERVAL	3000

org.apache.hadoop.mapred.TaskController

限定符和类型	常量字段	值
protected static final String	COMMAND_FILE	"taskjvm.sh"

org.apache.hadoop.mapred.TaskGraphServlet

限定符和类型	常量字段	值
public static final int	height	200
public static final int	width	600
public static final int	xmargin	80
public static final int	ymargin	20

org.apache.hadoop.mapred.TaskTracker

限定符和类型	常量字段	值
public static final long	COUNTER_UPDATE_INTERVAL	60000L
public static final long	DEFAULT_DISK_HEALTH_CHECK_INTERVAL	60000L
public static final int	FILE_NOT_FOUND	-1
public static final String	FOR_REDUCE_TASK	"for-reduce-task"
public static final String	FROM_MAP_TASK	"from-map-task"
public static final int	HEARTBEAT_INTERVAL_MIN	300
public static final String	MAP_OUTPUT_LENGTH	"Map-Output-Length"
public static final String	MR_CLIENTTRACE_FORMAT	"src: %s, dest: %s, bytes: %s, op: %s, cliID: %s, duration: %s"
public static final String	RAW_MAP_OUTPUT_LENGTH	"Raw-Map-Output-Length"
public static final String	SUBDIR	"taskTracker"
public static final int	SUCCESS	0
public static final String	TT_KEYTAB_FILE	"mapreduce.tasktracker.keytab.file"
public static final String	TT_LOG_TMP_DIR	"tt_log_tmp"
public static final String	TT_RESOURCE_CALCULATOR_PLUGIN	"mapreduce.tasktracker.resourcecalculatorplugin"
public static final String	TT_USER_NAME	"mapreduce.tasktracker.kerberos.principal"
public static final String	WORKDIR	"work"

org.apache.hadoop.mapred.TaskTrackerStatus

限定符和类型	常量字段	值
public static final int	UNAVAILABLE	-1

org.apache.hadoop.mapred.TaskUmbilicalProtocol

限定符和类型	常量字段	值
public static final long	versionID	19L

org.apache.hadoop.mapred.jobcontrol.Job

限定符和类型	常量字段	值
public static final int	DEPENDENT_FAILED	5
public static final int	FAILED	4
public static final int	READY	3
public static final int	RUNNING	2
public static final int	SUCCESS	0
public static final int	WAITING	1

org.apache.hadoop.mapred.lib.TotalOrderPartitioner<K extends WritableComparable,V>

限定符和类型	常量字段	值
public static final String	DEFAULT_PATH	"_partition.lst"

org.apache.hadoop.mapred.lib.aggregate.ValueAggregatorBaseDescriptor

限定符和类型	常量字段	值
public static final String	DOUBLE_VALUE_SUM	"DoubleValueSum"
public static final String	LONG_VALUE_MAX	"LongValueMax"
public static final String	LONG_VALUE_MIN	"LongValueMin"
public static final String	LONG_VALUE_SUM	"LongValueSum"
public static final String	STRING_VALUE_MAX	"StringValueMax"
public static final String	STRING_VALUE_MIN	"StringValueMin"
public static final String	UNIQ_VALUE_COUNT	"UniqValueCount"
public static final String	VALUE_HISTOGRAM	"ValueHistogram"

org.apache.hadoop.mapred.lib.aggregate.ValueAggregatorDescriptor

限定符和类型	常量字段	值
public static final String	TYPE_SEPARATOR	":"

org.apache.hadoop.mapred.lib.db.DBConfiguration

限定符和类型	常量字段	值
public static final String	DRIVER_CLASS_PROPERTY	"mapred.jdbc.driver.class"
public static final String	INPUT_CLASS_PROPERTY	"mapred.jdbc.input.class"
public static final String	INPUT_CONDITIONS_PROPERTY	"mapred.jdbc.input.conditions"
public static final String	INPUT_COUNT_QUERY	"mapred.jdbc.input.count.query"
public static final String	INPUT_FIELD_NAMES_PROPERTY	"mapred.jdbc.input.field.names"
public static final String	INPUT_ORDER_BY_PROPERTY	"mapred.jdbc.input.orderby"
public static final String	INPUT_QUERY	"mapred.jdbc.input.query"
public static final String	INPUT_TABLE_NAME_PROPERTY	"mapred.jdbc.input.table.name"
public static final String	OUTPUT_FIELD_NAMES_PROPERTY	"mapred.jdbc.output.field.names"
public static final String	OUTPUT_TABLE_NAME_PROPERTY	"mapred.jdbc.output.table.name"
public static final String	PASSWORD_PROPERTY	"mapred.jdbc.password"
public static final String	URL_PROPERTY	"mapred.jdbc.url"
public static final String	USERNAME_PROPERTY	"mapred.jdbc.username"

org.apache.hadoop.mapreduce.ID

限定符和类型	常量字段	值
protected static final char	SEPARATOR	95

org.apache.hadoop.mapreduce.JobContext

限定符和类型	常量字段	值
public static final String	CACHE_ARCHIVES_VISIBILITIES	"mapreduce.job.cache.archives.visibilities"
public static final String	CACHE_FILE_VISIBILITIES	"mapreduce.job.cache.files.visibilities"
protected static final String	COMBINE_CLASS_ATTR	"mapreduce.combine.class"
protected static final String	INPUT_FORMAT_CLASS_ATTR	"mapreduce.inputformat.class"
public static final String	JOB_ACL_MODIFY_JOB	"mapreduce.job.acl-modify-job"
public static final String	JOB_ACL_VIEW_JOB	"mapreduce.job.acl-view-job"
public static final String	JOB_CANCEL_DELEGATION_TOKEN	"mapreduce.job.complete.cancel.delegation.tokens"
public static final String	JOB_NAMENODES	"mapreduce.job.hdfs-servers"
protected static final String	MAP_CLASS_ATTR	"mapreduce.map.class"
protected static final String	OUTPUT_FORMAT_CLASS_ATTR	"mapreduce.outputformat.class"
protected static final String	PARTITIONER_CLASS_ATTR	"mapreduce.partitioner.class"
protected static final String	REDUCE_CLASS_ATTR	"mapreduce.reduce.class"
public static final String	USER_LOG_RETAIN_HOURS	"mapred.userlog.retain.hours"

org.apache.hadoop.mapreduce.JobID

限定符和类型	常量字段	值
protected static final String	JOB	"job"
public static final String	JOBID_REGEX	"job_[0-9]+_[0-9]+"

org.apache.hadoop.mapreduce.TaskAttemptID

限定符和类型	常量字段	值
protected static final String	ATTEMPT	"attempt"

org.apache.hadoop.mapreduce.TaskID

限定符和类型	常量字段	值
protected static final String	TASK	"task"

org.apache.hadoop.mapreduce.lib.db.DataDrivenDBInputFormat<T extends DBWritable>

限定符和类型	常量字段	值
public static final String	SUBSTITUTE_TOKEN	"$CONDITIONS"

org.apache.hadoop.mapreduce.lib.db.DBConfiguration

限定符和类型	常量字段	值
public static final String	DRIVER_CLASS_PROPERTY	"mapreduce.jdbc.driver.class"
public static final String	INPUT_BOUNDING_QUERY	"mapred.jdbc.input.bounding.query"
public static final String	INPUT_CLASS_PROPERTY	"mapreduce.jdbc.input.class"
public static final String	INPUT_CONDITIONS_PROPERTY	"mapreduce.jdbc.input.conditions"
public static final String	INPUT_COUNT_QUERY	"mapreduce.jdbc.input.count.query"
public static final String	INPUT_FIELD_NAMES_PROPERTY	"mapreduce.jdbc.input.field.names"
public static final String	INPUT_ORDER_BY_PROPERTY	"mapreduce.jdbc.input.orderby"
public static final String	INPUT_QUERY	"mapreduce.jdbc.input.query"
public static final String	INPUT_TABLE_NAME_PROPERTY	"mapreduce.jdbc.input.table.name"
public static final String	OUTPUT_FIELD_COUNT_PROPERTY	"mapreduce.jdbc.output.field.count"
public static final String	OUTPUT_FIELD_NAMES_PROPERTY	"mapreduce.jdbc.output.field.names"
public static final String	OUTPUT_TABLE_NAME_PROPERTY	"mapreduce.jdbc.output.table.name"
public static final String	PASSWORD_PROPERTY	"mapreduce.jdbc.password"
public static final String	URL_PROPERTY	"mapreduce.jdbc.url"
public static final String	USERNAME_PROPERTY	"mapreduce.jdbc.username"

org.apache.hadoop.mapreduce.lib.db.OracleDBRecordReader<T extends DBWritable>

限定符和类型	常量字段	值
public static final String	SESSION_TIMEZONE_KEY	"oracle.sessionTimeZone"

org.apache.hadoop.mapreduce.lib.fieldsel.FieldSelectionHelper

限定符和类型	常量字段	值
public static final String	DATA_FIELD_SEPERATOR	"mapreduce.fieldsel.data.field.separator"
public static final String	MAP_OUTPUT_KEY_VALUE_SPEC	"mapreduce.fieldsel.map.output.key.value.fields.spec"
public static final String	REDUCE_OUTPUT_KEY_VALUE_SPEC	"mapreduce.fieldsel.reduce.output.key.value.fields.spec"

org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat<K,V>

限定符和类型	常量字段	值
public static final String	SPLIT_MINSIZE_PERNODE	"mapreduce.input.fileinputformat.split.minsize.per.node"
public static final String	SPLIT_MINSIZE_PERRACK	"mapreduce.input.fileinputformat.split.minsize.per.rack"

org.apache.hadoop.mapreduce.lib.input.KeyValueLineRecordReader

限定符和类型	常量字段	值
public static final String	KEY_VALUE_SEPERATOR	"mapreduce.input.keyvaluelinerecordreader.key.value.separator"

org.apache.hadoop.mapreduce.lib.input.MultipleInputs

限定符和类型	常量字段	值
public static final String	DIR_FORMATS	"mapreduce.input.multipleinputs.dir.formats"
public static final String	DIR_MAPPERS	"mapreduce.input.multipleinputs.dir.mappers"

org.apache.hadoop.mapreduce.lib.input.NLineInputFormat

限定符和类型	常量字段	值
public static final String	LINES_PER_MAP	"mapreduce.input.lineinputformat.linespermap"

org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFilter<K,V>

限定符和类型	常量字段	值
public static final String	FILTER_CLASS	"mapreduce.input.sequencefileinputfilter.class"
public static final String	FILTER_FREQUENCY	"mapreduce.input.sequencefileinputfilter.frequency"
public static final String	FILTER_REGEX	"mapreduce.input.sequencefileinputfilter.regex"

org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFilter.MD5Filter

限定符和类型	常量字段	值
public static final int	MD5_LEN	16

org.apache.hadoop.mapreduce.lib.jobcontrol.ControlledJob

限定符和类型	常量字段	值
public static final String	CREATE_DIR	"mapreduce.jobcontrol.createdir.ifnotexist"

org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter

限定符和类型	常量字段	值
public static final String	SUCCEEDED_FILE_NAME	"_SUCCESS"
protected static final String	TEMP_DIR_NAME	"_temporary"

org.apache.hadoop.mapreduce.lib.output.FileOutputFormat<K,V>

限定符和类型	常量字段	值
protected static final String	BASE_OUTPUT_NAME	"mapreduce.output.basename"
protected static final String	PART	"part"

org.apache.hadoop.mapreduce.lib.partition.TotalOrderPartitioner<K extends WritableComparable<?>,V>

限定符和类型	常量字段	值
public static final String	DEFAULT_PATH	"_partition.lst"
public static final String	MAX_TRIE_DEPTH	"mapreduce.totalorderpartitioner.trie.maxdepth"
public static final String	NATURAL_ORDER	"mapreduce.totalorderpartitioner.naturalorder"
public static final String	PARTITIONER_PATH	"mapreduce.totalorderpartitioner.path"

org.apache.hadoop.mapreduce.security.SecureShuffleUtils

限定符和类型	常量字段	值
public static final String	HTTP_HEADER_REPLY_URL_HASH	"ReplyHash"
public static final String	HTTP_HEADER_URL_HASH	"UrlHash"

org.apache.hadoop.mapreduce.security.TokenCache

限定符和类型	常量字段	值
public static final String	JOB_TOKEN_HDFS_FILE	"jobToken"
public static final String	JOB_TOKENS_FILENAME	"mapreduce.job.jobTokenFile"

org.apache.hadoop.mapreduce.security.token.DelegationTokenRenewal

限定符和类型	常量字段	值
public static final String	SCHEME	"hdfs"

org.apache.hadoop.metrics.MetricsContext

限定符和类型	常量字段	值
public static final int	DEFAULT_PERIOD	5

org.apache.hadoop.metrics.file.FileContext

限定符和类型	常量字段	值
protected static final String	FILE_NAME_PROPERTY	"fileName"
protected static final String	PERIOD_PROPERTY	"period"

org.apache.hadoop.metrics.spi.MetricValue

限定符和类型	常量字段	值
public static final boolean	ABSOLUTE	false
public static final boolean	INCREMENT	true

org.apache.hadoop.metrics.util.MetricsBase

限定符和类型	常量字段	值
public static final String	NO_DESCRIPTION	"NoDescription"

org.apache.hadoop.metrics2.Metric

限定符和类型	常量字段	值
public static final String	NO_DESCRIPTION	"<<no description>>"

org.apache.hadoop.metrics2.filter.GlobFilter

限定符和类型	常量字段	值
protected static final String	EXCLUDE_KEY	"exclude"
protected static final String	EXCLUDE_TAGS_KEY	"exclude.tags"
protected static final String	INCLUDE_KEY	"include"
protected static final String	INCLUDE_TAGS_KEY	"include.tags"

org.apache.hadoop.metrics2.filter.RegexFilter

限定符和类型	常量字段	值
protected static final String	EXCLUDE_KEY	"exclude"
protected static final String	EXCLUDE_TAGS_KEY	"exclude.tags"
protected static final String	INCLUDE_KEY	"include"
protected static final String	INCLUDE_TAGS_KEY	"include.tags"

org.apache.hadoop.metrics2.impl.MetricsRecordImpl

限定符和类型	常量字段	值
protected static final String	CONTEXT_KEY	"context"
protected static final String	DEFAULT_CONTEXT	"default"

org.apache.hadoop.metrics2.lib.MetricsRegistry

限定符和类型	常量字段	值
public static final String	CONTEXT_DESC	"Metrics context"
public static final String	CONTEXT_KEY	"context"

org.apache.hadoop.metrics2.sink.ganglia.AbstractGangliaSink

限定符和类型	常量字段	值
public static final int	BUFFER_SIZE	1500
public static final int	DEFAULT_DMAX	0
public static final int	DEFAULT_PORT	8649
public static final int	DEFAULT_TMAX	60
public static final String	DEFAULT_UNITS	""
public static final String	EQUAL	"="
public static final String	SERVERS_PROPERTY	"servers"
public static final boolean	SUPPORT_SPARSE_METRICS_DEFAULT	false
public static final String	SUPPORT_SPARSE_METRICS_PROPERTY	"supportsparse"

org.apache.hadoop.net.NetworkTopology

限定符和类型	常量字段	值
public static final int	DEFAULT_HOST_LEVEL	2
public static final String	DEFAULT_RACK	"/default-rack"

org.apache.hadoop.net.NetworkTopologyWithNodeGroup

限定符和类型	常量字段	值
public static final String	DEFAULT_NODEGROUP	"/default-nodegroup"

org.apache.hadoop.net.NodeBase

限定符和类型	常量字段	值
public static final char	PATH_SEPARATOR	47
public static final String	PATH_SEPARATOR_STR	"/"
public static final String	ROOT	""

org.apache.hadoop.record.compiler.Consts

限定符和类型	常量字段	值
public static final String	RECORD_INPUT	"_rio_a"
public static final String	RECORD_OUTPUT	"_rio_a"
public static final String	RIO_PREFIX	"_rio_"
public static final String	RTI_FILTER	"_rio_rtiFilter"
public static final String	RTI_FILTER_FIELDS	"_rio_rtiFilterFields"
public static final String	RTI_VAR	"_rio_recTypeInfo"
public static final String	TAG	"_rio_tag"

org.apache.hadoop.record.compiler.generated.RccConstants

限定符和类型	常量字段	值
public static final int	BOOLEAN_TKN	15
public static final int	BUFFER_TKN	21
public static final int	BYTE_TKN	14
public static final int	COMMA_TKN	29
public static final int	CSTRING_TKN	31
public static final int	DEFAULT	0
public static final int	DOT_TKN	30
public static final int	DOUBLE_TKN	19
public static final int	EOF	0
public static final int	FLOAT_TKN	18
public static final int	GT_TKN	27
public static final int	IDENT_TKN	32
public static final int	INCLUDE_TKN	13
public static final int	INT_TKN	16
public static final int	LBRACE_TKN	24
public static final int	LONG_TKN	17
public static final int	LT_TKN	26
public static final int	MAP_TKN	23
public static final int	MODULE_TKN	11
public static final int	RBRACE_TKN	25
public static final int	RECORD_TKN	12
public static final int	SEMICOLON_TKN	28
public static final int	USTRING_TKN	20
public static final int	VECTOR_TKN	22
public static final int	WithinMultiLineComment	2
public static final int	WithinOneLineComment	1

org.apache.hadoop.record.compiler.generated.SimpleCharStream

限定符和类型	常量字段	值
public static final boolean	staticFlag	false

org.apache.hadoop.record.meta.TypeID.RIOType

限定符和类型	常量字段	值
public static final byte	BOOL	1
public static final byte	BUFFER	2
public static final byte	BYTE	3
public static final byte	DOUBLE	4
public static final byte	FLOAT	5
public static final byte	INT	6
public static final byte	LONG	7
public static final byte	MAP	8
public static final byte	STRING	9
public static final byte	STRUCT	10
public static final byte	VECTOR	11

org.apache.hadoop.security.RefreshUserMappingsProtocol

限定符和类型	常量字段	值
public static final long	versionID	1L

org.apache.hadoop.security.SaslRpcServer

限定符和类型	常量字段	值
public static final String	SASL_DEFAULT_REALM	"default"
public static final int	SWITCH_TO_SIMPLE_AUTH	-88

org.apache.hadoop.security.SecurityUtil

限定符和类型	常量字段	值
public static final String	HOSTNAME_PATTERN	"_HOST"

org.apache.hadoop.security.UserGroupInformation

限定符和类型	常量字段	值
public static final String	HADOOP_TOKEN_FILE_LOCATION	"HADOOP_TOKEN_FILE_LOCATION"

org.apache.hadoop.security.authentication.client.AuthenticatedURL

限定符和类型	常量字段	值
public static final String	AUTH_COOKIE	"hadoop.auth"

org.apache.hadoop.security.authentication.client.KerberosAuthenticator

限定符和类型	常量字段	值
public static final String	AUTHORIZATION	"Authorization"
public static final String	NEGOTIATE	"Negotiate"
public static final String	WWW_AUTHENTICATE	"WWW-Authenticate"

org.apache.hadoop.security.authentication.client.PseudoAuthenticator

限定符和类型	常量字段	值
public static final String	USER_NAME	"user.name"

org.apache.hadoop.security.authentication.server.AuthenticationFilter

限定符和类型	常量字段	值
public static final String	AUTH_TOKEN_VALIDITY	"token.validity"
public static final String	AUTH_TYPE	"type"
public static final String	CONFIG_PREFIX	"config.prefix"
public static final String	COOKIE_DOMAIN	"cookie.domain"
public static final String	COOKIE_PATH	"cookie.path"
public static final String	SIGNATURE_SECRET	"signature.secret"

org.apache.hadoop.security.authentication.server.KerberosAuthenticationHandler

限定符和类型	常量字段	值
public static final String	KEYTAB	"kerberos.keytab"
public static final String	NAME_RULES	"kerberos.name.rules"
public static final String	PRINCIPAL	"kerberos.principal"
public static final String	TYPE	"kerberos"

org.apache.hadoop.security.authentication.server.PseudoAuthenticationHandler

限定符和类型	常量字段	值
public static final String	ANONYMOUS_ALLOWED	"simple.anonymous.allowed"
public static final String	TYPE	"simple"

org.apache.hadoop.security.authorize.AccessControlList

限定符和类型	常量字段	值
public static final String	WILDCARD_ACL_VALUE	"*"

org.apache.hadoop.security.authorize.PolicyProvider

限定符和类型	常量字段	值
public static final String	POLICY_PROVIDER_CONFIG	"hadoop.security.authorization.policyprovider"

org.apache.hadoop.security.authorize.ProxyUsers

限定符和类型	常量字段	值
public static final String	CONF_GROUPS	".groups"
public static final String	CONF_HADOOP_PROXYUSER	"hadoop.proxyuser."
public static final String	CONF_HADOOP_PROXYUSER_RE	"hadoop\\.proxyuser\\."

org.apache.hadoop.security.authorize.RefreshAuthorizationPolicyProtocol

限定符和类型	常量字段	值
public static final long	versionID	1L

org.apache.hadoop.security.authorize.ServiceAuthorizationManager

限定符和类型	常量字段	值
public static final String	SERVICE_AUTHORIZATION_CONFIG	"hadoop.security.authorization"

org.apache.hadoop.streaming.StreamJob

限定符和类型	常量字段	值
protected static final String	LINK_URI	"You need to specify the uris as hdfs://host:port/#linkname,Please specify a different link name for all of your caching URIs"

org.apache.hadoop.streaming.io.IdentifierResolver

限定符和类型	常量字段	值
public static final String	RAW_BYTES_ID	"rawbytes"
public static final String	TEXT_ID	"text"
public static final String	TYPED_BYTES_ID	"typedbytes"

org.apache.hadoop.tools.DistCp.DuplicationException

限定符和类型	常量字段	值
public static final int	ERROR_CODE	-2

org.apache.hadoop.tools.HadoopArchives

限定符和类型	常量字段	值
public static final int	VERSION	3

org.apache.hadoop.tools.distcp2.DistCpConstants

限定符和类型	常量字段	值
public static final String	CONF_LABEL_ATOMIC_COPY	"distcp.atomic.copy"
public static final String	CONF_LABEL_BANDWIDTH_MB	"distcp.map.bandwidth.mb"
public static final String	CONF_LABEL_COPY_LISTING_CLASS	"distcp.copy.listing.class"
public static final String	CONF_LABEL_COPY_STRATEGY	"distcp.copy.strategy"
public static final String	CONF_LABEL_DELETE_MISSING	"distcp.delete.missing.source"
public static final String	CONF_LABEL_DISTCP_JOB_ID	"distcp.job.id"
public static final String	CONF_LABEL_IGNORE_FAILURES	"distcp.ignore.failures"
public static final String	CONF_LABEL_LISTING_FILE_PATH	"distcp.listing.file.path"
public static final String	CONF_LABEL_LOG_PATH	"distcp.log.path"
public static final String	CONF_LABEL_MAX_MAPS	"distcp.max.maps"
public static final String	CONF_LABEL_META_FOLDER	"distcp.meta.folder"
public static final String	CONF_LABEL_OVERWRITE	"distcp.copy.overwrite"
public static final String	CONF_LABEL_PRESERVE_STATUS	"distcp.preserve.status"
public static final String	CONF_LABEL_SKIP_CRC	"distcp.skip.crc"
public static final String	CONF_LABEL_SOURCE_LISTING	"distcp.source.listing"
public static final String	CONF_LABEL_SSL_CONF	"distcp.keystore.resource"
public static final String	CONF_LABEL_SSL_KEY_STORE_LOCATION	"ssl.client.keystore.location"
public static final String	CONF_LABEL_SSL_KEYSTORE	"dfs.https.client.keystore.resource"
public static final String	CONF_LABEL_SSL_TRUST_STORE_LOCATION	"ssl.client.truststore.location"
public static final String	CONF_LABEL_SYNC_FOLDERS	"distcp.sync.folders"
public static final String	CONF_LABEL_TARGET_FINAL_PATH	"distcp.target.final.path"
public static final String	CONF_LABEL_TARGET_WORK_PATH	"distcp.target.work.path"
public static final String	CONF_LABEL_TOTAL_BYTES_TO_BE_COPIED	"mapred.total.bytes.expected"
public static final String	CONF_LABEL_TOTAL_NUMBER_OF_RECORDS	"mapred.number.of.records"
public static final String	CONF_LABEL_WORK_PATH	"distcp.work.path"
public static final int	DEFAULT_BANDWIDTH_MB	100
public static final int	DEFAULT_MAPS	20
public static final int	DUPLICATE_INPUT	-2
public static final int	INVALID_ARGUMENT	-1
public static final int	SUCCESS	0
public static final String	UNIFORMSIZE	"uniformsize"
public static final int	UNKNOWN_ERROR	-999

org.apache.hadoop.util.DataChecksum

限定符和类型	常量字段	值
public static final int	CHECKSUM_CRC32	1
public static final int	CHECKSUM_NULL	0
public static final int	HEADER_LEN	5
public static final int	SIZE_OF_INTEGER	4

org.apache.hadoop.util.Shell

限定符和类型	常量字段	值
public static final String	SET_GROUP_COMMAND	"chgrp"
public static final String	SET_OWNER_COMMAND	"chown"
public static final String	SET_PERMISSION_COMMAND	"chmod"
public static final String	ULIMIT_COMMAND	"ulimit"
public static final String	USER_NAME_COMMAND	"whoami"

org.apache.hadoop.util.StringUtils

限定符和类型	常量字段	值
public static final char	COMMA	44
public static final String	COMMA_STR	","
public static final char	ESCAPE_CHAR	92

org.apache.hadoop.util.bloom.RemoveScheme

限定符和类型	常量字段	值
public static final short	MAXIMUM_FP	2
public static final short	MINIMUM_FN	1
public static final short	RANDOM	0
public static final short	RATIO	3

org.apache.hadoop.util.hash.Hash

限定符和类型	常量字段	值
public static final int	INVALID_HASH	-1
public static final int	JENKINS_HASH	0
public static final int	MURMUR_HASH	1