Package org.apache.hadoop.hbase.wal

Interface Summary

Interface	Description
DefaultWALProvider.Reader
DefaultWALProvider.Writer
WAL	A Write Ahead Log (WAL) provides service for reading, writing waledits.
WAL.Reader	When outside clients need to consume persisted WALs, they rely on a provided Reader.
WALProvider	The Write Ahead Log (WAL) stores all durable edits to the HRegion.
WALProvider.Writer

Class Summary

Class	Description
BoundedRegionGroupingProvider	A WAL Provider that pre-creates N WALProviders and then limits our grouping strategy to them.
DefaultWALProvider	A WAL Provider that returns a single thread safe WAL that writes to HDFS.
WAL.Entry	Utility class that lets us keep track of the edit with it's key.
WALFactory	Entry point for users of the Write Ahead Log.
WALKey	A Key for an entry in the change log.
WALPrettyPrinter	WALPrettyPrinter prints the contents of a given WAL with a variety of options affecting formatting and extent of content.
WALSplitter	This class is responsible for splitting up a bunch of regionserver commit log files that are no longer being written to, into new files, one per region for region to replay on startup.
WALSplitter.EntryBuffers	Class which accumulates edits and separates them into a buffer per region while simultaneously accounting RAM usage.
WALSplitter.MutationReplay	A struct used by getMutationsFromWALEntry
WALSplitter.OutputSink	The following class is an abstraction class to provide a common interface to support both existing recovered edits file sink and region server WAL edits replay sink
WALSplitter.PipelineController	Contains some methods to control WAL-entries producer / consumer interactions
WALSplitter.RegionEntryBuffer	A buffer of some number of edits for a given region.
WALSplitter.SinkWriter	Class wraps the actual writer which writes data out and related statistics
WALSplitter.WriterThread

Enum Summary

Enum	Description
WALKey.Version