| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.hadoop.hdfs; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.fs.CommonConfigurationKeys; |
| |
| /** |
| * This class contains constants for configuration keys used |
| * in hdfs. |
| * |
| */ |
| |
| @InterfaceAudience.Private |
| public class DFSConfigKeys extends CommonConfigurationKeys { |
| |
| public static final String DFS_BLOCK_SIZE_KEY = "dfs.blocksize"; |
| public static final long DFS_BLOCK_SIZE_DEFAULT = 64*1024*1024; |
| public static final String DFS_REPLICATION_KEY = "dfs.replication"; |
| public static final short DFS_REPLICATION_DEFAULT = 3; |
| public static final String DFS_STREAM_BUFFER_SIZE_KEY = "dfs.stream-buffer-size"; |
| public static final int DFS_STREAM_BUFFER_SIZE_DEFAULT = 4096; |
| public static final String DFS_BYTES_PER_CHECKSUM_KEY = "dfs.bytes-per-checksum"; |
| public static final int DFS_BYTES_PER_CHECKSUM_DEFAULT = 512; |
| public static final String DFS_CLIENT_WRITE_PACKET_SIZE_KEY = "dfs.client-write-packet-size"; |
| public static final int DFS_CLIENT_WRITE_PACKET_SIZE_DEFAULT = 64*1024; |
| public static final String DFS_CLIENT_WRITE_REPLACE_DATANODE_ON_FAILURE_ENABLE_KEY = "dfs.client.block.write.replace-datanode-on-failure.enable"; |
| public static final boolean DFS_CLIENT_WRITE_REPLACE_DATANODE_ON_FAILURE_ENABLE_DEFAULT = true; |
| public static final String DFS_CLIENT_WRITE_REPLACE_DATANODE_ON_FAILURE_POLICY_KEY = "dfs.client.block.write.replace-datanode-on-failure.policy"; |
| public static final String DFS_CLIENT_WRITE_REPLACE_DATANODE_ON_FAILURE_POLICY_DEFAULT = "DEFAULT"; |
| public static final String DFS_CLIENT_SOCKET_CACHE_CAPACITY_KEY = "dfs.client.socketcache.capacity"; |
| public static final int DFS_CLIENT_SOCKET_CACHE_CAPACITY_DEFAULT = 16; |
| |
| public static final String DFS_NAMENODE_BACKUP_ADDRESS_KEY = "dfs.namenode.backup.address"; |
| public static final String DFS_NAMENODE_BACKUP_ADDRESS_DEFAULT = "localhost:50100"; |
| public static final String DFS_NAMENODE_BACKUP_HTTP_ADDRESS_KEY = "dfs.namenode.backup.http-address"; |
| public static final String DFS_NAMENODE_BACKUP_HTTP_ADDRESS_DEFAULT = "0.0.0.0:50105"; |
| public static final String DFS_NAMENODE_BACKUP_SERVICE_RPC_ADDRESS_KEY = "dfs.namenode.backup.dnrpc-address"; |
| public static final String DFS_DATANODE_BALANCE_BANDWIDTHPERSEC_KEY = "dfs.datanode.balance.bandwidthPerSec"; |
| public static final long DFS_DATANODE_BALANCE_BANDWIDTHPERSEC_DEFAULT = 1024*1024; |
| public static final String DFS_NAMENODE_HTTP_ADDRESS_KEY = "dfs.namenode.http-address"; |
| public static final String DFS_NAMENODE_HTTP_ADDRESS_DEFAULT = "0.0.0.0:50070"; |
| public static final String DFS_NAMENODE_RPC_ADDRESS_KEY = "dfs.namenode.rpc-address"; |
| public static final String DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY = "dfs.namenode.servicerpc-address"; |
| public static final String DFS_NAMENODE_MAX_OBJECTS_KEY = "dfs.namenode.max.objects"; |
| public static final long DFS_NAMENODE_MAX_OBJECTS_DEFAULT = 0; |
| public static final String DFS_NAMENODE_SAFEMODE_EXTENSION_KEY = "dfs.namenode.safemode.extension"; |
| public static final int DFS_NAMENODE_SAFEMODE_EXTENSION_DEFAULT = 30000; |
| public static final String DFS_NAMENODE_SAFEMODE_THRESHOLD_PCT_KEY = "dfs.namenode.safemode.threshold-pct"; |
| public static final float DFS_NAMENODE_SAFEMODE_THRESHOLD_PCT_DEFAULT = 0.999f; |
| // set this to a slightly smaller value than |
| // DFS_NAMENODE_SAFEMODE_THRESHOLD_PCT_DEFAULT to populate |
| // needed replication queues before exiting safe mode |
| public static final String DFS_NAMENODE_REPL_QUEUE_THRESHOLD_PCT_KEY = |
| "dfs.namenode.replqueue.threshold-pct"; |
| public static final String DFS_NAMENODE_SAFEMODE_MIN_DATANODES_KEY = "dfs.namenode.safemode.min.datanodes"; |
| public static final int DFS_NAMENODE_SAFEMODE_MIN_DATANODES_DEFAULT = 0; |
| public static final String DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_KEY = "dfs.namenode.secondary.http-address"; |
| public static final String DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_DEFAULT = "0.0.0.0:50090"; |
| public static final String DFS_NAMENODE_CHECKPOINT_PERIOD_KEY = "dfs.namenode.checkpoint.period"; |
| public static final long DFS_NAMENODE_CHECKPOINT_PERIOD_DEFAULT = 3600; |
| public static final String DFS_NAMENODE_CHECKPOINT_SIZE_KEY = "dfs.namenode.checkpoint.size"; |
| public static final long DFS_NAMENODE_CHECKPOINT_SIZE_DEFAULT = 4194304; |
| public static final String DFS_NAMENODE_UPGRADE_PERMISSION_KEY = "dfs.namenode.upgrade.permission"; |
| public static final int DFS_NAMENODE_UPGRADE_PERMISSION_DEFAULT = 00777; |
| public static final String DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_KEY = "dfs.namenode.heartbeat.recheck-interval"; |
| public static final int DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_DEFAULT = 5*60*1000; |
| public static final String DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_KEY = "dfs.client.https.keystore.resource"; |
| public static final String DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_DEFAULT = "ssl-client.xml"; |
| public static final String DFS_CLIENT_HTTPS_NEED_AUTH_KEY = "dfs.client.https.need-auth"; |
| public static final boolean DFS_CLIENT_HTTPS_NEED_AUTH_DEFAULT = false; |
| public static final String DFS_CLIENT_CACHED_CONN_RETRY_KEY = "dfs.client.cached.conn.retry"; |
| public static final int DFS_CLIENT_CACHED_CONN_RETRY_DEFAULT = 3; |
| public static final String DFS_NAMENODE_ACCESSTIME_PRECISION_KEY = "dfs.namenode.accesstime.precision"; |
| public static final long DFS_NAMENODE_ACCESSTIME_PRECISION_DEFAULT = 3600000; |
| public static final String DFS_NAMENODE_REPLICATION_CONSIDERLOAD_KEY = "dfs.namenode.replication.considerLoad"; |
| public static final boolean DFS_NAMENODE_REPLICATION_CONSIDERLOAD_DEFAULT = true; |
| public static final String DFS_NAMENODE_REPLICATION_INTERVAL_KEY = "dfs.namenode.replication.interval"; |
| public static final int DFS_NAMENODE_REPLICATION_INTERVAL_DEFAULT = 3; |
| public static final String DFS_NAMENODE_REPLICATION_MIN_KEY = "dfs.namenode.replication.min"; |
| public static final int DFS_NAMENODE_REPLICATION_MIN_DEFAULT = 1; |
| public static final String DFS_NAMENODE_REPLICATION_PENDING_TIMEOUT_SEC_KEY = "dfs.namenode.replication.pending.timeout-sec"; |
| public static final int DFS_NAMENODE_REPLICATION_PENDING_TIMEOUT_SEC_DEFAULT = -1; |
| public static final String DFS_NAMENODE_REPLICATION_MAX_STREAMS_KEY = "dfs.namenode.replication.max-streams"; |
| public static final int DFS_NAMENODE_REPLICATION_MAX_STREAMS_DEFAULT = 2; |
| public static final String DFS_PERMISSIONS_ENABLED_KEY = "dfs.permissions.enabled"; |
| public static final boolean DFS_PERMISSIONS_ENABLED_DEFAULT = true; |
| public static final String DFS_PERMISSIONS_SUPERUSERGROUP_KEY = "dfs.permissions.superusergroup"; |
| public static final String DFS_PERMISSIONS_SUPERUSERGROUP_DEFAULT = "supergroup"; |
| public static final String DFS_ADMIN = "dfs.cluster.administrators"; |
| public static final String DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY = "dfs.https.server.keystore.resource"; |
| public static final String DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_DEFAULT = "ssl-server.xml"; |
| public static final String DFS_NAMENODE_NAME_DIR_RESTORE_KEY = "dfs.namenode.name.dir.restore"; |
| public static final boolean DFS_NAMENODE_NAME_DIR_RESTORE_DEFAULT = false; |
| public static final String DFS_NAMENODE_SUPPORT_ALLOW_FORMAT_KEY = "dfs.namenode.support.allow.format"; |
| public static final boolean DFS_NAMENODE_SUPPORT_ALLOW_FORMAT_DEFAULT = true; |
| public static final String DFS_LIST_LIMIT = "dfs.ls.limit"; |
| public static final int DFS_LIST_LIMIT_DEFAULT = 1000; |
| public static final String DFS_DATANODE_FAILED_VOLUMES_TOLERATED_KEY = "dfs.datanode.failed.volumes.tolerated"; |
| public static final int DFS_DATANODE_FAILED_VOLUMES_TOLERATED_DEFAULT = 0; |
| public static final String DFS_DATANODE_SYNCONCLOSE_KEY = "dfs.datanode.synconclose"; |
| public static final boolean DFS_DATANODE_SYNCONCLOSE_DEFAULT = false; |
| public static final String DFS_DATANODE_SOCKET_REUSE_KEEPALIVE_KEY = "dfs.datanode.socket.reuse.keepalive"; |
| public static final int DFS_DATANODE_SOCKET_REUSE_KEEPALIVE_DEFAULT = 1000; |
| |
| //Delegation token related keys |
| public static final String DFS_NAMENODE_DELEGATION_KEY_UPDATE_INTERVAL_KEY = "dfs.namenode.delegation.key.update-interval"; |
| public static final long DFS_NAMENODE_DELEGATION_KEY_UPDATE_INTERVAL_DEFAULT = 24*60*60*1000; // 1 day |
| public static final String DFS_NAMENODE_DELEGATION_TOKEN_RENEW_INTERVAL_KEY = "dfs.namenode.delegation.token.renew-interval"; |
| public static final long DFS_NAMENODE_DELEGATION_TOKEN_RENEW_INTERVAL_DEFAULT = 24*60*60*1000; // 1 day |
| 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_MAX_LIFETIME_DEFAULT = 7*24*60*60*1000; // 7 days |
| |
| //Filesystem limit keys |
| public static final String DFS_NAMENODE_MAX_COMPONENT_LENGTH_KEY = "dfs.namenode.fs-limits.max-component-length"; |
| public static final int DFS_NAMENODE_MAX_COMPONENT_LENGTH_DEFAULT = 0; // no limit |
| public static final String DFS_NAMENODE_MAX_DIRECTORY_ITEMS_KEY = "dfs.namenode.fs-limits.max-directory-items"; |
| public static final int DFS_NAMENODE_MAX_DIRECTORY_ITEMS_DEFAULT = 0; // no limit |
| |
| //Following keys have no defaults |
| public static final String DFS_DATANODE_DATA_DIR_KEY = "dfs.datanode.data.dir"; |
| public static final String DFS_NAMENODE_HTTPS_ADDRESS_KEY = "dfs.namenode.https-address"; |
| public static final String DFS_NAMENODE_HTTPS_ADDRESS_DEFAULT = "0.0.0.0:50470"; |
| public static final String DFS_NAMENODE_NAME_DIR_KEY = "dfs.namenode.name.dir"; |
| public static final String DFS_NAMENODE_EDITS_DIR_KEY = "dfs.namenode.edits.dir"; |
| public static final String DFS_CLIENT_READ_PREFETCH_SIZE_KEY = "dfs.client.read.prefetch.size"; |
| public static final String DFS_CLIENT_RETRY_WINDOW_BASE= "dfs.client.retry.window.base"; |
| public static final String DFS_METRICS_SESSION_ID_KEY = "dfs.metrics.session-id"; |
| public static final String DFS_DATANODE_HOST_NAME_KEY = "dfs.datanode.hostname"; |
| public static final String DFS_DATANODE_STORAGEID_KEY = "dfs.datanode.StorageId"; |
| public static final String DFS_NAMENODE_HOSTS_KEY = "dfs.namenode.hosts"; |
| public static final String DFS_NAMENODE_HOSTS_EXCLUDE_KEY = "dfs.namenode.hosts.exclude"; |
| public static final String DFS_CLIENT_SOCKET_TIMEOUT_KEY = "dfs.client.socket-timeout"; |
| 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_HOSTS = "dfs.hosts"; |
| public static final String DFS_HOSTS_EXCLUDE = "dfs.hosts.exclude"; |
| |
| // Much code in hdfs is not yet updated to use these keys. |
| 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_LOCATEFOLLOWINGBLOCK_RETRIES_DEFAULT = 5; |
| public static final String DFS_CLIENT_BLOCK_WRITE_RETRIES_KEY = "dfs.client.block.write.retries"; |
| public static final int DFS_CLIENT_BLOCK_WRITE_RETRIES_DEFAULT = 3; |
| public static final String DFS_CLIENT_MAX_BLOCK_ACQUIRE_FAILURES_KEY = "dfs.client.max.block.acquire.failures"; |
| public static final int DFS_CLIENT_MAX_BLOCK_ACQUIRE_FAILURES_DEFAULT = 3; |
| public static final String DFS_BALANCER_MOVEDWINWIDTH_KEY = "dfs.balancer.movedWinWidth"; |
| public static final long DFS_BALANCER_MOVEDWINWIDTH_DEFAULT = 5400*1000L; |
| public static final String DFS_DATANODE_ADDRESS_KEY = "dfs.datanode.address"; |
| public static final String DFS_DATANODE_ADDRESS_DEFAULT = "0.0.0.0:50010"; |
| public static final String DFS_DATANODE_DATA_DIR_PERMISSION_KEY = "dfs.datanode.data.dir.perm"; |
| public static final String DFS_DATANODE_DATA_DIR_PERMISSION_DEFAULT = "700"; |
| public static final String DFS_DATANODE_DIRECTORYSCAN_INTERVAL_KEY = "dfs.datanode.directoryscan.interval"; |
| public static final int DFS_DATANODE_DIRECTORYSCAN_INTERVAL_DEFAULT = 21600; |
| public static final String DFS_DATANODE_DIRECTORYSCAN_THREADS_KEY = "dfs.datanode.directoryscan.threads"; |
| public static final int DFS_DATANODE_DIRECTORYSCAN_THREADS_DEFAULT = 1; |
| public static final String DFS_DATANODE_DNS_INTERFACE_KEY = "dfs.datanode.dns.interface"; |
| public static final String DFS_DATANODE_DNS_INTERFACE_DEFAULT = "default"; |
| public static final String DFS_DATANODE_DNS_NAMESERVER_KEY = "dfs.datanode.dns.nameserver"; |
| public static final String DFS_DATANODE_DNS_NAMESERVER_DEFAULT = "default"; |
| public static final String DFS_DATANODE_DU_RESERVED_KEY = "dfs.datanode.du.reserved"; |
| public static final long DFS_DATANODE_DU_RESERVED_DEFAULT = 0; |
| public static final String DFS_DATANODE_HANDLER_COUNT_KEY = "dfs.datanode.handler.count"; |
| public static final int DFS_DATANODE_HANDLER_COUNT_DEFAULT = 3; |
| public static final String DFS_DATANODE_HTTP_ADDRESS_KEY = "dfs.datanode.http.address"; |
| public static final String DFS_DATANODE_HTTP_ADDRESS_DEFAULT = "0.0.0.0:50075"; |
| public static final String DFS_DATANODE_MAX_RECEIVER_THREADS_KEY = "dfs.datanode.max.transfer.threads"; |
| public static final int DFS_DATANODE_MAX_RECEIVER_THREADS_DEFAULT = 4096; |
| public static final String DFS_DATANODE_NUMBLOCKS_KEY = "dfs.datanode.numblocks"; |
| public static final int DFS_DATANODE_NUMBLOCKS_DEFAULT = 64; |
| public static final String DFS_DATANODE_SCAN_PERIOD_HOURS_KEY = "dfs.datanode.scan.period.hours"; |
| public static final int DFS_DATANODE_SCAN_PERIOD_HOURS_DEFAULT = 0; |
| public static final String DFS_DATANODE_SIMULATEDDATASTORAGE_KEY = "dfs.datanode.simulateddatastorage"; |
| public static final boolean DFS_DATANODE_SIMULATEDDATASTORAGE_DEFAULT = false; |
| public static final String DFS_DATANODE_SIMULATEDDATASTORAGE_CAPACITY_KEY = "dfs.datanode.simulateddatastorage.capacity"; |
| public static final long DFS_DATANODE_SIMULATEDDATASTORAGE_CAPACITY_DEFAULT = 2L<<40; |
| public static final String DFS_DATANODE_TRANSFERTO_ALLOWED_KEY = "dfs.datanode.transferTo.allowed"; |
| public static final boolean DFS_DATANODE_TRANSFERTO_ALLOWED_DEFAULT = true; |
| public static final String DFS_DATANODE_BLOCKVOLUMECHOICEPOLICY = "dfs.datanode.block.volume.choice.policy"; |
| public static final String DFS_DATANODE_BLOCKVOLUMECHOICEPOLICY_DEFAULT = |
| "org.apache.hadoop.hdfs.server.datanode.RoundRobinVolumesPolicy"; |
| public static final String DFS_HEARTBEAT_INTERVAL_KEY = "dfs.heartbeat.interval"; |
| public static final long DFS_HEARTBEAT_INTERVAL_DEFAULT = 3; |
| public static final String DFS_NAMENODE_DECOMMISSION_INTERVAL_KEY = "dfs.namenode.decommission.interval"; |
| public static final int DFS_NAMENODE_DECOMMISSION_INTERVAL_DEFAULT = 30; |
| public static final String DFS_NAMENODE_DECOMMISSION_NODES_PER_INTERVAL_KEY = "dfs.namenode.decommission.nodes.per.interval"; |
| public static final int DFS_NAMENODE_DECOMMISSION_NODES_PER_INTERVAL_DEFAULT = 5; |
| public static final String DFS_NAMENODE_HANDLER_COUNT_KEY = "dfs.namenode.handler.count"; |
| public static final int DFS_NAMENODE_HANDLER_COUNT_DEFAULT = 10; |
| public static final String DFS_NAMENODE_SERVICE_HANDLER_COUNT_KEY = "dfs.namenode.service.handler.count"; |
| public static final int DFS_NAMENODE_SERVICE_HANDLER_COUNT_DEFAULT = 10; |
| public static final String DFS_SUPPORT_APPEND_KEY = "dfs.support.append"; |
| public static final boolean DFS_SUPPORT_APPEND_DEFAULT = true; |
| public static final String DFS_HTTPS_ENABLE_KEY = "dfs.https.enable"; |
| public static final boolean DFS_HTTPS_ENABLE_DEFAULT = false; |
| public static final String DFS_HTTPS_PORT_KEY = "dfs.https.port"; |
| public static final int DFS_HTTPS_PORT_DEFAULT = 50470; |
| public static final String DFS_DEFAULT_CHUNK_VIEW_SIZE_KEY = "dfs.default.chunk.view.size"; |
| public static final int DFS_DEFAULT_CHUNK_VIEW_SIZE_DEFAULT = 32*1024; |
| public static final String DFS_DATANODE_HTTPS_ADDRESS_KEY = "dfs.datanode.https.address"; |
| public static final String DFS_DATANODE_HTTPS_ADDRESS_DEFAULT = "0.0.0.0:50475"; |
| public static final String DFS_DATANODE_IPC_ADDRESS_KEY = "dfs.datanode.ipc.address"; |
| public static final String DFS_DATANODE_IPC_ADDRESS_DEFAULT = "0.0.0.0:50020"; |
| |
| public static final String DFS_BLOCK_ACCESS_TOKEN_ENABLE_KEY = "dfs.block.access.token.enable"; |
| public static final boolean DFS_BLOCK_ACCESS_TOKEN_ENABLE_DEFAULT = false; |
| public static final String DFS_BLOCK_ACCESS_KEY_UPDATE_INTERVAL_KEY = "dfs.block.access.key.update.interval"; |
| public static final long DFS_BLOCK_ACCESS_KEY_UPDATE_INTERVAL_DEFAULT = 600L; |
| public static final String DFS_BLOCK_ACCESS_TOKEN_LIFETIME_KEY = "dfs.block.access.token.lifetime"; |
| public static final long DFS_BLOCK_ACCESS_TOKEN_LIFETIME_DEFAULT = 600L; |
| |
| public static final String DFS_REPLICATION_MAX_KEY = "dfs.replication.max"; |
| public static final int DFS_REPLICATION_MAX_DEFAULT = 512; |
| public static final String DFS_DF_INTERVAL_KEY = "dfs.df.interval"; |
| public static final int DFS_DF_INTERVAL_DEFAULT = 60000; |
| public static final String DFS_BLOCKREPORT_INTERVAL_MSEC_KEY = "dfs.blockreport.intervalMsec"; |
| public static final long DFS_BLOCKREPORT_INTERVAL_MSEC_DEFAULT = 21600000; |
| public static final String DFS_BLOCKREPORT_INITIAL_DELAY_KEY = "dfs.blockreport.initialDelay"; |
| public static final int DFS_BLOCKREPORT_INITIAL_DELAY_DEFAULT = 0; |
| public static final String DFS_BLOCK_INVALIDATE_LIMIT_KEY = "dfs.block.invalidate.limit"; |
| public static final int DFS_BLOCK_INVALIDATE_LIMIT_DEFAULT = 1000; |
| public static final String DFS_DEFAULT_MAX_CORRUPT_FILES_RETURNED_KEY = "dfs.corruptfilesreturned.max"; |
| public static final int DFS_DEFAULT_MAX_CORRUPT_FILES_RETURNED = 500; |
| |
| |
| // property for fsimage compression |
| public static final String DFS_IMAGE_COMPRESS_KEY = "dfs.image.compress"; |
| public static final boolean DFS_IMAGE_COMPRESS_DEFAULT = false; |
| public static final String DFS_IMAGE_COMPRESSION_CODEC_KEY = |
| "dfs.image.compression.codec"; |
| public static final String DFS_IMAGE_COMPRESSION_CODEC_DEFAULT = |
| "org.apache.hadoop.io.compress.DefaultCodec"; |
| |
| public static final String DFS_IMAGE_TRANSFER_RATE_KEY = |
| "dfs.image.transfer.bandwidthPerSec"; |
| public static final long DFS_IMAGE_TRANSFER_RATE_DEFAULT = 0; //no throttling |
| |
| //Keys with no defaults |
| public static final String DFS_DATANODE_PLUGINS_KEY = "dfs.datanode.plugins"; |
| 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_NAMENODE_PLUGINS_KEY = "dfs.namenode.plugins"; |
| public static final String DFS_WEB_UGI_KEY = "dfs.web.ugi"; |
| public static final String DFS_NAMENODE_STARTUP_KEY = "dfs.namenode.startup"; |
| public static final String DFS_DATANODE_KEYTAB_FILE_KEY = "dfs.datanode.keytab.file"; |
| public static final String DFS_DATANODE_USER_NAME_KEY = "dfs.datanode.kerberos.principal"; |
| public static final String DFS_NAMENODE_KEYTAB_FILE_KEY = "dfs.namenode.keytab.file"; |
| public static final String DFS_NAMENODE_USER_NAME_KEY = "dfs.namenode.kerberos.principal"; |
| public static final String DFS_NAMENODE_KRB_HTTPS_USER_NAME_KEY = "dfs.namenode.kerberos.https.principal"; |
| public static final String DFS_SECONDARY_NAMENODE_KEYTAB_FILE_KEY = "dfs.secondary.namenode.keytab.file"; |
| public static final String DFS_SECONDARY_NAMENODE_USER_NAME_KEY = "dfs.secondary.namenode.kerberos.principal"; |
| public static final String DFS_SECONDARY_NAMENODE_KRB_HTTPS_USER_NAME_KEY = "dfs.secondary.namenode.kerberos.https.principal"; |
| public static final String DFS_NAMENODE_NAME_CACHE_THRESHOLD_KEY = "dfs.namenode.name.cache.threshold"; |
| public static final int DFS_NAMENODE_NAME_CACHE_THRESHOLD_DEFAULT = 10; |
| |
| public static final String DFS_FEDERATION_NAMESERVICES = "dfs.federation.nameservices"; |
| public static final String DFS_FEDERATION_NAMESERVICE_ID = "dfs.federation.nameservice.id"; |
| public static final String DFS_NAMENODE_RESOURCE_CHECK_INTERVAL_KEY = "dfs.namenode.resource.check.interval"; |
| public static final int DFS_NAMENODE_RESOURCE_CHECK_INTERVAL_DEFAULT = 5000; |
| public static final String DFS_NAMENODE_DU_RESERVED_KEY = "dfs.namenode.resource.du.reserved"; |
| public static final long DFS_NAMENODE_DU_RESERVED_DEFAULT = 1024 * 1024 * 100; // 100 MB |
| public static final String DFS_NAMENODE_CHECKED_VOLUMES_KEY = "dfs.namenode.resource.checked.volumes"; |
| } |
