Package org.apache.hadoop.hdfs.server.common

Interface HdfsServerConstants

@Private public interface HdfsServerConstants
Some handy internal HDFS constants

  • Field Details

    • MIN_BLOCKS_FOR_WRITE

      static final int MIN_BLOCKS_FOR_WRITE
      See Also:

    • LEASE_RECOVER_PERIOD

      static final long LEASE_RECOVER_PERIOD
      See Also:

    • MAX_PATH_LENGTH

      static final int MAX_PATH_LENGTH
      See Also:

    • MAX_PATH_DEPTH

      static final int MAX_PATH_DEPTH
      See Also:

    • INVALID_TXID

      static final long INVALID_TXID
      See Also:

    • RESERVED_LEGACY_GENERATION_STAMPS

      static final long RESERVED_LEGACY_GENERATION_STAMPS
      See Also:

    • NAMENODE_LAYOUT_VERSION

      static final int NAMENODE_LAYOUT_VERSION
      Current layout version for NameNode. Please see NameNodeLayoutVersion.Feature on adding new layout version.

    • MINIMUM_COMPATIBLE_NAMENODE_LAYOUT_VERSION

      static final int MINIMUM_COMPATIBLE_NAMENODE_LAYOUT_VERSION
      Current minimum compatible version for NameNode Please see NameNodeLayoutVersion.Feature on adding new layout version.

    • RESERVED_PATH_COMPONENTS

      static final String[] RESERVED_PATH_COMPONENTS
      Path components that are reserved in HDFS.

      .reserved is only reserved under root ("/").

    • DOT_SNAPSHOT_DIR_BYTES

      static final byte[] DOT_SNAPSHOT_DIR_BYTES

    • NAMENODE_LEASE_HOLDER

      static final String NAMENODE_LEASE_HOLDER
      See Also:

    • CRYPTO_XATTR_ENCRYPTION_ZONE

      static final String CRYPTO_XATTR_ENCRYPTION_ZONE
      See Also:

    • CRYPTO_XATTR_FILE_ENCRYPTION_INFO

      static final String CRYPTO_XATTR_FILE_ENCRYPTION_INFO
      See Also:

    • SECURITY_XATTR_UNREADABLE_BY_SUPERUSER

      static final String SECURITY_XATTR_UNREADABLE_BY_SUPERUSER
      See Also:

    • XATTR_ERASURECODING_POLICY

      static final String XATTR_ERASURECODING_POLICY
      See Also:

    • XATTR_SNAPSHOT_DELETED

      static final String XATTR_SNAPSHOT_DELETED
      See Also:

    • XATTR_SATISFY_STORAGE_POLICY

      static final String XATTR_SATISFY_STORAGE_POLICY
      See Also:

    • MOVER_ID_PATH

      static final org.apache.hadoop.fs.Path MOVER_ID_PATH

    • BLOCK_GROUP_INDEX_MASK

      static final long BLOCK_GROUP_INDEX_MASK
      See Also:

    • MAX_BLOCKS_IN_GROUP

      static final byte MAX_BLOCKS_IN_GROUP
      See Also:

    • MAX_BANDWIDTH_PER_DATANODE

      static final long MAX_BANDWIDTH_PER_DATANODE
      See Also: