Uses of Package
org.apache.hadoop.hbase.regionserver
Packages that use org.apache.hadoop.hbase.regionserver
Package
Description
Provides HBase Client
Provides client classes for invoking Coprocessor RPC protocols
Overview
Example Usage
Table of Contents
Provides implementations of
HFile and HFile
BlockCache.Tools to help define network clients and servers.
Provides HBase MapReduce
Input/OutputFormats, a table indexing MapReduce job, and utility methods.
Multi Cluster Replication
Provides an HBase Thrift
service.
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbaseClassDescriptionHRegionServer makes a set of HRegions available to clients.
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.backup
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.backup.regionserver
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.clientClassDescriptionRegions store data for a certain region of a table.HRegionServer makes a set of HRegions available to clients.RegionScanner describes iterators over rows in an HRegion.
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.client.coprocessorClassDescriptionDeprecated.As of release 2.0.0, this will be removed in HBase 3.0.0.
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.coordinationClassDescriptionA curated subset of services provided by
HRegionServer.Deprecated.since 2.4.0 and in 3.0.0, to be removed in 4.0.0, replaced by procedure-based distributed WAL splitter, see SplitWALRemoteProcedureDeprecated.Objects implementing this interface actually do the task that has been acquired by aSplitLogWorker. -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.coprocessorClassDescriptionUsed to track flush execution.Internal scanners differ from client-side scanners in that they operate on HStoreKeys and byte[] instead of RowResults.Wraps together the mutations which are applied as a batch to the region and their operation status and WALEdits.Thrown if request for nonexistent column family.Provides read-only access to the Regions presently online on the current RegionServerRegion is a subset of HRegion with operations required for the
Coprocessors.Operation enum is used inRegion.startRegionOperation()and elsewhere to provide context for various checks.RegionScanner describes iterators over rows in an HRegion.A curated subset of services provided byHRegionServer.Deprecated.As of release 2.0.0, this will be removed in HBase 3.0.0.This class gives you the ability to change the max versions and TTL options before opening a scanner for a Store.Enum to distinguish general scan types.Interface for objects that hold a column family in a Region.An interface to describe a store data file.Reader for a StoreFile. -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.coprocessor.exampleClassDescriptionUsed to track flush execution.Internal scanners differ from client-side scanners in that they operate on HStoreKeys and byte[] instead of RowResults.ScannerContext instances encapsulate limit tracking AND progress towards those limits during invocations of
InternalScanner.next(java.util.List)andInternalScanner.next(java.util.List).This class gives you the ability to change the max versions and TTL options before opening a scanner for a Store.Enum to distinguish general scan types.Interface for objects that hold a column family in a Region.An interface to describe a store data file. -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.ioClassDescriptionDescribe a StoreFile (hfile, reference, link)Reader for a StoreFile.
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.io.hfileClassDescriptionA sink of cells that allows appending cells to the Writers that implement it.This interface denotes a scanner as one which can ship cells.Implementors of this interface are the ones who needs to do some action when the
Shipper.shipped()is called -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.ipc
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.mapreduce
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.masterClassDescriptionReads special method annotations and table names to figure a priority for use by QoS facility in ipc; e.g: rpcs to hbase:meta get priority.Abstraction that allows different modules in RegionServer to update/get the favored nodes information for regions.HRegionServer makes a set of HRegions available to clients.Last flushed sequence Ids for the regions and their stores on region serverInterface to Map of online regions.Provides read-only access to the Regions presently online on the current RegionServerA curated subset of services provided by
HRegionServer.A factory class that constructs anRpcScheduler.Implements the regionserver RPC services. -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.master.assignmentClassDescriptionView to an on-disk Region.A Store data file.A split policy determines when a Region should be split.
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.master.regionClassDescriptionRegions store data for a certain region of a table.RegionScanner describes iterators over rows in an HRegion.
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.mobClassDescriptionA sink of cells that allows appending cells to the Writers that implement it.Default StoreEngine creates the default compactor, policy, and store file manager, or their derivatives.Default implementation of StoreFlusher.Used to track flush execution.The store implementation to save MOBs (medium objects), it extends the HStore.HRegionServer makes a set of HRegions available to clients.A Store holds a column family in a Region.A Store data file.Internal scanners differ from client-side scanners in that they operate on HStoreKeys and byte[] instead of RowResults.
MemStoreSnapshotis a Context Object to hold details of the snapshot taken on a MemStore.StoreEngine is a factory that can create the objects necessary for HStore to operate.KeyValueScanner adaptor over the Reader.A StoreFile writer.Store flusher interface. -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.procedure
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.procedure.flushClassDescriptionRegions store data for a certain region of a table.HRegionServer makes a set of HRegions available to clients.A curated subset of services provided by
HRegionServer. -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.procedure2
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.quotasClassDescriptionHRegionServer makes a set of HRegions available to clients.Maintains regionserver statistics and publishes them through the metrics interfaces.Region is a subset of HRegion with operations required for the
Coprocessors.A curated subset of services provided byHRegionServer. -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.quotas.policies
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.regionserverClassDescriptionAn abstract class, which implements the behaviour shared by all concrete memstore instances.Base class for cell sink that separates the provided cells into multiple files.Manage the bootstrap node list at region server side.This Chore, every time it runs, will clear the unsused HFiles in the data folder.CellFlatMap stores a constant number of elements and is immutable after creation stage.A sink of cells that allows appending cells to the Writers that implement it.If set of MapFile.Readers in Store change, implementors are notified.A chunk of memory out of which allocations are sliced.Does the management of memstoreLAB chunk creations.Types of chunks, based on their sizesA pool of
Chunkinstances.A chore service that periodically cleans up the compacted files when there are no active readers using those compacted files and also helps in clearing the block cache of these compacted file entries.A memstore implementation which supports in-memory compaction.Types of indexes (part of immutable segments) to be used after flattening, compaction, or merge are applied.The compaction pipeline of aCompactingMemStore, is a FIFO queue of segments.Class responsible to execute the Compaction on the specified path.Compact region on request and then run split if appropriateThe CompositeImmutableSegments is created as a collection of ImmutableSegments and supports the interface of a single ImmutableSegments.ARegionSplitPolicyimplementation which splits a region as soon as any of its store files exceeds a maximum configurable size.CSLMImmutableSegment is an abstract class that extends the API supported by aSegment, andImmutableSegment.Default implementation of StoreFlusher.Abstraction that allows different modules in RegionServer to update/get the favored nodes information for regions.Factory to use when you want to use theFifoRpcSchedulerAFlushPolicythat only flushes store larger a given threshold.Used to track flush execution.A flush policy determines the stores that need to be flushed when flushing a region.Request a flush.Listener which will get notified regarding flush requests of regions.Reasons we flush.Manages tuning of Heap memory usingHeapMemoryTuner.Every class that wants to observe heap memory tune actions must implement this interface.POJO to pass all the relevant information required to do the heap memory tuning.POJO which holds the result of memory tuning done by HeapMemoryTuner implementation.Makes the decision regarding proper sizing of the heap memory.The store implementation to save MOBs (medium objects), it extends the HStore.Regions store data for a certain region of a table.Class that tracks the progress of a batch operations, accumulating status codes and tracking the index at which processing is proceeding.Visitor interface for batch operationsListener class to enable callers of bulkLoadHFile() to perform any necessary pre/post processing of a given bulkload callObjects from this class are created when flushing to describe all the different states that that method ends up in.A class that tracks exceptions that have been observed in one batch.A result object from prepare flush cache stageClass used to represent a lock on a row.View to an on-disk Region.HRegionServer makes a set of HRegions available to clients.A Wrapper for the region FileSystem operations adding WAL specific operationsA Store holds a column family in a Region.A Store data file.ImmutableSegment is an abstract class that extends the API supported by aSegment, and is not needed for aMutableSegment.Split size is the number of regions that are on this server that all are of the same table, cubed, times 2x the region flush size OR the maximum region split size, whichever is smaller.Computes the HDFSBlockDistribution for a file based on the underlying located blocks for an HdfsDataInputStream reading that file.Internal scanners differ from client-side scanners in that they operate on HStoreKeys and byte[] instead of RowResults.Implements a heap merge across any number of KeyValueScanners.Scanner that returns the next KeyValue.Last flushed sequence Ids for the regions and their stores on region serverReports a problem with a leaseLeaseListener is an interface meant to be implemented by users of the Leases class.Leases There are several server classes in HBase that need to track external clients that occasionally send heartbeats.This class tracks a single Lease.Thrown if we are asked to create a lease but lease on passed name already exists.Runs periodically to determine if the WAL should be rolled.The MemStore holds in-memory modifications to the Store.MemStoreCompactionStrategy is the root of a class hierarchy which defines the strategy for choosing the next action to apply in an (in-memory) memstore compaction.Types of actions to be done on the pipeline upon MemStoreCompaction invocation.The ongoing MemStore Compaction manager, dispatches a solo running compaction and interrupts the compaction if requested.Thread that flushes cache on request NOTE: This class extends Thread rather than Chore because the sleep time can be interrupted when there is something to do, rather than the Chore sleep time which is invariant.Datastructure used in the flush queue.A memstore-local allocation buffer.The MemStoreSegmentsIterator is designed to perform one iteration over given list of segments For another iteration new instance of MemStoreSegmentsIterator needs to be created The iterator is not thread-safe and must have only one instance per MemStore in each period of timeData structure of three longs.Accounting of current heap and data sizes.MemStoreSnapshotis a Context Object to hold details of the snapshot taken on a MemStore.This class is for maintaining the various regionserver's heap memory manager statistics and publishing them through the metrics interfaces.This interface will be implemented by a MetricsSource that will export metrics from HeapMemoryManager in RegionServer into the hadoop metrics system.Hadoop2 implementation of MetricsHeapMemoryManagerSource.This is the glue between the HRegion and whatever hadoop shim layer is loaded (hbase-hadoop1-compat or hbase-hadoop2-compat).This interface will be implemented by a MetricsSource that will export metrics from multiple regions into the hadoop metrics system.Maintains regionserver statistics and publishes them through the metrics interfaces.A collection of exposed metrics for space quotas from an HBase RegionServer.Interface for classes that expose metrics about the regionserver.Interface of a factory to create Metrics Sources used inside of regionservers.This is the interface that will expose RegionServer information to hadoop1/hadoop2 implementations of the MetricsRegionServerSource.Impl for exposing HRegionServer Information through Hadoop's metrics 2 system.This interface will be implemented to allow single regions to push metrics into MetricsRegionAggregateSource that will in turn push data to the Hadoop metrics system.Interface of class that will wrap an HRegion and export numbers so they can be used in MetricsRegionSourceThis interface will be implemented by a MetricsSource that will export metrics from multiple regions of a table into the hadoop metrics system.This interface will be implemented to allow region server to push table metrics into MetricsRegionAggregateSource that will in turn push data to the Hadoop metrics system.Interface of class that will wrap a MetricsTableSource and export numbers so they can be used in MetricsTableSourceThis interface will be implemented by a MetricsSource that will export metrics from multiple users into the hadoop metrics system.Wraps together the mutations which are applied as a batch to the region and their operation status and WALEdits.Manages the read/write consistency.Write number and whether write has completed given out at start of a write transaction.Interface to Map of online regions.A mutable segment in memstore, specifically the active segment.A "non-lazy" scanner which always does a real seek operation.A "non-reversed & non-lazy" scanner which does not support backward scanning and always does a real seek operation.Thrown if request for nonexistent column family.Provides read-only access to the Regions presently online on the current RegionServerThis class stores the Operation status code and the exception message that occurs in case of failure of operations like put, delete, etc.Class to submit requests for PrefetchExecutor depending on configuration changeLock to manage concurrency betweenRegionScannerandHRegion.getSmallestReadPoint().Region is a subset of HRegion with operations required for theCoprocessors.Operation enum is used inRegion.startRegionOperation()and elsewhere to provide context for various checks.Row lock held by a given thread.Implements the coprocessor environment and runtime support for coprocessors loaded within aRegion.Encapsulation of the environment of each coprocessorRegionScanner describes iterators over rows in an HRegion.RegionScannerImpl is used to combine scanners from multiple Stores (aka column families).RegionServerAccounting keeps record of some basic real time information about the Region Server.Coprocessor environment extension providing access to region server related services.A curated subset of services provided byHRegionServer.Context for postOpenDeployTasks().Thrown by the region server when it is in shutting down state.Services a Store needs from a Region.A split policy determines when a Region should be split.A split restriction that restricts the pattern of the split point.A thread which callsreportProcedureDoneto tell master the result of a remote procedure.Gateway to Cluster Replication.A sink for a replication stream has to expose this service.A source for a replication stream has to expose this service.ReversedStoreScanner extends from StoreScanner, and is used to support reversed scanning.Deprecated.As of release 2.0.0, this will be removed in HBase 3.0.0.A factory class that constructs anRpcScheduler.Implements the regionserver RPC services.Holder class which holds the RegionScanner, nextCallSeq and RpcCallbacks together.An RpcCallBack that creates a list of scanners that needs to perform callBack operation on completion of multiGets.Used bySnapshotVerifyProcedureto verify if the region info and store file info in RegionManifest are intact.Immutable information for scans over a store.ScannerContext instances encapsulate limit tracking AND progress towards those limits during invocations ofInternalScanner.next(java.util.List)andInternalScanner.next(java.util.List).The different fields that can be used as limits in calls toInternalScanner.next(java.util.List)andInternalScanner.next(java.util.List)The various scopes where a limit can be enforced.The possible states a scanner may be in following a call toInternalScanner.next(List)Generate a new style scanner id to prevent collision with previous started server or other RSs.This class gives you the ability to change the max versions and TTL options before opening a scanner for a Store.Enum to distinguish general scan types.Bulk loads in secure mode.This is an abstraction of a segment maintained in a memstore, e.g., the active cell set or its snapshot.A singleton store segment factory.Implementation of nonce manager that stores nonces in a hash map and cleans them up after some time; if nonce group/client ID is supplied, nonces are stored by client ID.This interface denotes a scanner as one which can ship cells.Implementors of this interface are the ones who needs to do some action when theShipper.shipped()is calledDeprecated.since 2.4.0 and in 3.0.0, to be removed in 4.0.0, replaced by procedure-based distributed WAL splitter, see SplitWALRemoteProcedureDeprecated.Objects implementing this interface actually do the task that has been acquired by aSplitLogWorker.Interface for objects that hold a column family in a Region.A more restricted interface for HStore.This carries the immutable information and references on some of the meta data about the HStore.StoreEngine is a factory that can create the objects necessary for HStore to operate.An interface to describe a store data file.Describe a StoreFile (hfile, reference, link)Manages the store files and basic metadata about that that determines the logical structure (e.g.Reader for a StoreFile.A chore for refreshing the store files for secondary regions hosted in the region server.KeyValueScanner adaptor over the Reader.A StoreFile writer.A package protected interface for a store flushing.Store flusher interface.Scanner scans both the memstore and the Store.Base class for cell sink that separates the provided cells into multiple files for stripe compaction.Configuration class for stripe store and compactions.Stripe implementation of StoreFileManager.The state class.Stripe flush request wrapper that writes a non-striped file.Stores minimum and maximum timestamp values, it is [minimumTimestamp, maximumTimestamp] in interval notation.A list of segment managers coupled with the version of the memstore (version at the time it was created).Thrown when a request contains a key which is not part of this region -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.regionserver.compactionsClassDescriptionBase class for cell sink that separates the provided cells into multiple files.A sink of cells that allows appending cells to the Writers that implement it.class for cell sink that separates the provided cells into multiple files for date tiered compaction.Regions store data for a certain region of a table.A Store holds a column family in a Region.A Store data file.Internal scanners differ from client-side scanners in that they operate on HStoreKeys and byte[] instead of RowResults.Immutable information for scans over a store.Enum to distinguish general scan types.Interface for objects that hold a column family in a Region.A more restricted interface for HStore.An interface to describe a store data file.KeyValueScanner adaptor over the Reader.A StoreFile writer.Base class for cell sink that separates the provided cells into multiple files for stripe compaction.Configuration class for stripe store and compactions.Stripe flush request wrapper that writes a non-striped file.
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.regionserver.handlerClassDescriptionRegions store data for a certain region of a table.HRegionServer makes a set of HRegions available to clients.Scanner that returns the next KeyValue.A curated subset of services provided by
HRegionServer.Deprecated.Objects implementing this interface actually do the task that has been acquired by aSplitLogWorker. -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.regionserver.http
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.regionserver.querymatcherClassDescriptionImplements the coprocessor environment and runtime support for coprocessors loaded within a
Region.Immutable information for scans over a store.Enum to distinguish general scan types.Implementors of this interface are the ones who needs to do some action when theShipper.shipped()is called -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.regionserver.snapshotClassDescriptionRegions store data for a certain region of a table.HRegionServer makes a set of HRegions available to clients.A curated subset of services provided by
HRegionServer. -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.regionserver.storefiletrackerClassDescriptionView to an on-disk Region.This carries the immutable information and references on some of the meta data about the HStore.Describe a StoreFile (hfile, reference, link)A StoreFile writer.
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.regionserver.throttleClassDescriptionA Store holds a column family in a Region.Region is a subset of HRegion with operations required for the
Coprocessors.A curated subset of services provided byHRegionServer. -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.regionserver.walClassDescriptionManages the read/write consistency.Write number and whether write has completed given out at start of a write transaction.
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.replicationClassDescriptionGateway to Cluster Replication.A sink for a replication stream has to expose this service.
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.replication.regionserverClassDescriptionManages the read/write consistency.A curated subset of services provided by
HRegionServer.Gateway to Cluster Replication.A sink for a replication stream has to expose this service.A source for a replication stream has to expose this service. -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.security.accessClassDescriptionUsed to track flush execution.Internal scanners differ from client-side scanners in that they operate on HStoreKeys and byte[] instead of RowResults.Wraps together the mutations which are applied as a batch to the region and their operation status and WALEdits.Region is a subset of HRegion with operations required for the
Coprocessors.RegionScanner describes iterators over rows in an HRegion.Enum to distinguish general scan types.Interface for objects that hold a column family in a Region. -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.security.visibilityClassDescriptionInternal scanners differ from client-side scanners in that they operate on HStoreKeys and byte[] instead of RowResults.Wraps together the mutations which are applied as a batch to the region and their operation status and WALEdits.This class stores the Operation status code and the exception message that occurs in case of failure of operations like put, delete, etc.Region is a subset of HRegion with operations required for the
Coprocessors.RegionScanner describes iterators over rows in an HRegion.Implementors of this interface are the ones who needs to do some action when theShipper.shipped()is called -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.snapshotClassDescriptionRegions store data for a certain region of a table.View to an on-disk Region.Describe a StoreFile (hfile, reference, link)
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.testingClassDescriptionProvides read-only access to the Regions presently online on the current RegionServerRegion is a subset of HRegion with operations required for the
Coprocessors. -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.thrift2
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.toolClassDescriptionWraps together the mutations which are applied as a batch to the region and their operation status and WALEdits.
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.utilClassDescriptionA sink of cells that allows appending cells to the Writers that implement it.Regions store data for a certain region of a table.HRegionServer makes a set of HRegions available to clients.Scanner that returns the next KeyValue.A "non-lazy" scanner which always does a real seek operation.A "non-reversed & non-lazy" scanner which does not support backward scanning and always does a real seek operation.This interface denotes a scanner as one which can ship cells.Implementors of this interface are the ones who needs to do some action when the
Shipper.shipped()is calledDescribe a StoreFile (hfile, reference, link) -
Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.util.compactionClassDescriptionView to an on-disk Region.Describe a StoreFile (hfile, reference, link)
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Classes in org.apache.hadoop.hbase.regionserver used by org.apache.hadoop.hbase.walClassDescriptionLast flushed sequence Ids for the regions and their stores on region serverManages the read/write consistency.Write number and whether write has completed given out at start of a write transaction.A curated subset of services provided by
HRegionServer.Interface which abstracts implementations on log sequenceId assignmentA StoreFile writer.