Package org.apache.iotdb.db.wal.buffer

Interface Summary

Interface	Description
IWALBuffer	This class serializes and flushes WALEntry.
IWALByteBufferView	This ByteBuffer view provides blocking writing interface for wal to serialize huge object with limited memory usage.
WALEntryValue	A class implements this interface can be written into .wal file.

Class Summary

Class	Description
AbstractWALBuffer
WALBuffer	This buffer guarantees the concurrent safety and uses double buffers mechanism to accelerate writes and avoid waiting for buffer syncing to disk.
WALEntry	WALEntry is the basic element of .wal file, including type, memTable id, and specific value(physical plan or memTable snapshot).
WALInfoEntry	This entry class stores info for persistence
WALSignalEntry	This entry class provides a signal to help wal buffer dealing with some special cases

Enum Summary

Enum	Description
WALEntryType	Type of WALEntry, including info type and signal type