Package org.apache.hadoop.hbase.regionserver.compactions

Interface Summary

CompactionThroughputController	A utility that constrains the total throughput of one or more simultaneous flows (compactions) by sleeping when necessary.
Compactor.CellSink	TODO: Replace this with CellOutputStream when StoreFile.Writer uses cells.
Compactor.CellSinkFactory<S>
Compactor.InternalScannerFactory
StripeCompactionPolicy.StripeInformationProvider	The information about stripes that the policy needs to do its stuff

Class Summary

AbstractMultiOutputCompactor<T extends AbstractMultiFileWriter>	Base class for implementing a Compactor which will generate multiple output files after compaction.
CompactionConfiguration	Compaction configuration for a particular instance of HStore.
CompactionContext	This class holds all "physical" details necessary to run a compaction, and abstracts away the details specific to a particular compaction.
CompactionPolicy	A compaction policy determines how to select files for compaction, how to compact them, and how to generate the compacted files.
CompactionProgress	This class holds information relevant for tracking the progress of a compaction.
CompactionRequest	This class holds all logical details necessary to run a compaction.
CompactionThroughputControllerFactory
CompactionWindow	Base class for compaction window implementation.
CompactionWindowFactory	For creating compaction window.
Compactor<T extends Compactor.CellSink>	A compactor is a compaction algorithm associated a given policy.
Compactor.FileDetails	The sole reason this class exists is that java has no ref/out/pointer parameters.
CurrentHourProvider
DateTieredCompactionPolicy	HBASE-15181 This is a simple implementation of date-based tiered compaction similar to Cassandra's for the following benefits: Improve date-range-based scan by structuring store files in date-based tiered layout. Reduce compaction overhead. Improve TTL efficiency. Perfect fit for the use cases that: has mostly date-based data write and scan and a focus on the most recent data. Out-of-order writes are handled gracefully.
DateTieredCompactionRequest
DateTieredCompactor	This compactor will generate StoreFile for different time ranges.
DefaultCompactor	Compact passed set of files.
ExploringCompactionPolicy	Class to pick which files if any to compact together.
ExponentialCompactionWindowFactory	Exponential compaction window implementation.
FIFOCompactionPolicy	FIFO compaction policy selects only files which have all cells expired.
NoLimitCompactionThroughputController	A dummy CompactionThroughputController that does nothing.
OffPeakHours
PressureAwareCompactionThroughputController	A throughput controller which uses the follow schema to limit throughput If compaction pressure is greater than 1.0, no limitation. In off peak hours, use a fixed throughput limitation "hbase.hstore.compaction.throughput.offpeak" In normal hours, the max throughput is tune between "hbase.hstore.compaction.throughput.lower.bound" and "hbase.hstore.compaction.throughput.higher.bound", using the formula "lower + (higer - lower) * compactionPressure", where compactionPressure is in range [0.0, 1.0]
RatioBasedCompactionPolicy	The default algorithm for selecting files for compaction.
SortedCompactionPolicy	An abstract compaction policy that select files on seq id order.
StripeCompactionPolicy	Stripe store implementation of compaction policy.
StripeCompactionPolicy.StripeCompactionRequest	Stripe compaction request wrapper.
StripeCompactor	This is the placeholder for stripe compactor.