Package org.apache.bookkeeper.bookie.storage.ldb

Classes related to DB based ledger storage.

Interface Summary

Interface	Description
DbLedgerStorageDataFormats.LedgerDataOrBuilder
KeyValueStorage	Abstraction of a generic key-value local database.
KeyValueStorage.Batch	Interface for a batch to be written in the storage.
KeyValueStorage.CloseableIterator<T>	Iterator interface.
KeyValueStorageFactory	Factory class to create instances of the key-value storage implementation.
SingleDirectoryDbLedgerStorage.LedgerLoggerProcessor	Interface which process ledger logger.
WriteCache.EntryConsumer	Consumer that is used to scan the entire write cache.

Class Summary

Class	Description
ArrayGroupSort	Sort an array of longs, grouping the items in tuples.
ArrayUtil	Utility to serialize/deserialize longs into byte arrays.
DbLedgerStorage	Implementation of LedgerStorage that uses RocksDB to keep the indexes for entries stored in EntryLogs.
DbLedgerStorageDataFormats
DbLedgerStorageDataFormats.LedgerData	Ledger metadata stored in the bookie
DbLedgerStorageDataFormats.LedgerData.Builder	Ledger metadata stored in the bookie
DbLedgerStorageStats	A umbrella class for db ledger storage stats with one instance per ledger directory.
EntryLocationIndex	Maintains an index of the entry locations in the EntryLogger.
EntryLocationIndexStats	A umbrella class for ledger metadata index stats.
KeyValueStorageRocksDB	RocksDB based implementation of the KeyValueStorage.
LedgerMetadataIndex	Maintains an index for the ledgers metadata.
LedgerMetadataIndexStats	A umbrella class for ledger metadata index stats.
LedgersIndexCheckOp	Scan the ledgers index to make sure it is readable.
LedgersIndexRebuildOp	Scan all entries in the journal and entry log files then rebuilds the ledgers index.
LocationsIndexRebuildOp	Scan all entries in the entry log and rebuild the locations index.
LongPairWrapper	Recyclable wrapper that holds a pair of longs.
LongWrapper	Wrapper for a long serialized into a byte array.
PersistentEntryLogMetadataMap	Persistent entryLogMetadata-map that stores entry-loggers metadata into rocksDB.
ReadCache	Read cache implementation.
SingleDirectoryDbLedgerStorage	Single directory implementation of LedgerStorage that uses RocksDB to keep the indexes for entries stored in EntryLogs.
TransientLedgerInfo	This class borrows the logic from FileInfo.
WriteCache	Write cache implementation.

Enum Summary

Enum	Description
KeyValueStorageFactory.DbConfigType	Enum used to specify different config profiles in the underlying storage.