Uses of Package
org.apache.hadoop.hbase.regionserver

A Store data file.

HRegionServer makes a set of HRegions available to clients.

Defines the procedure to atomically perform multiple scans and mutations on a HRegion.

Services provided by HRegionServer

Objects implementing this interface actually do the task that has been acquired by a SplitLogWorker.

This interface is used for the tracking and enforcement of Deletes during the course of a Get or Scan operation.

Scanner that returns the next KeyValue.

Regions store data for a certain region of a table.

RegionScanner describes iterators over rows in an HRegion.

Enum to distinguish general scan types.

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.

Interface for objects that hold a column family in a Region.

Reader for a StoreFile.

Abstraction that allows different modules in RegionServer to update/get the favored nodes information for regions.

Last flushed sequence Ids for the regions and their stores on region server

Implements the regionserver RPC services.

Services provided by HRegionServer

Regions store data for a certain region of a table.

Regions store data for a certain region of a table.

Simple wrapper for a byte buffer and a counter.

A RegionSplitPolicy implementation which splits a region as soon as any of its store files exceeds a maximum configurable size.

Return codes for comparison of two Deletes.

Abstraction that allows different modules in RegionServer to update/get the favored nodes information for regions.

Request a flush.

Manages tuning of Heap memory using HeapMemoryTuner.

POJO which holds the result of memory tuning done by HeapMemoryTuner implementation.

HRegionServer makes a set of HRegions available to clients.

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.

Implements a heap merge across any number of KeyValueScanners.

Scanner that returns the next KeyValue.

Reports a problem with a lease

Leases There are several server classes in HBase that need to track external clients that occasionally send heartbeats.

Runs periodically to determine if the WAL should be rolled.

The MemStore holds in-memory modifications to the Store.

Holds details of the snapshot taken on a MemStore.

This interface will be implemented by a MetricsSource that will export metrics from multiple regions into the hadoop metrics system.

This class is for maintaining the various regionserver statistics and publishing them through the metrics interfaces.

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.

Interface of class that will wrap an HRegion and export numbers so they can be used in MetricsRegionSource

Manages the read/write consistency within memstore.

A "non-lazy" scanner which always does a real seek operation.

Thrown if request for nonexistent column family.

This class stores the Operation status code and the exception message that occurs in case of failure of operations like put, delete, etc.

Listener class to enable callers of bulkLoadHFile() to perform any necessary pre/post processing of a given bulkload call

Row lock held by a given thread.

Implements the coprocessor environment and runtime support for coprocessors loaded within a Region.

Split transaction journal entry

Split transaction listener

RegionServerAccounting keeps record of some basic real time information about the Region Server.

Services provided by HRegionServer

A split policy determines when a region should be split.

A sink for a replication stream has to expose this service.

Defines the procedure to atomically perform multiple scans and mutations on a HRegion.

Implements the regionserver RPC services.

ScannerContext instances encapsulate limit tracking AND progress towards those limits during invocations of InternalScanner.next(java.util.List) and InternalScanner.next(java.util.List).

The various scopes where a limit can be enforced.

A query matcher that is specifically designed for the scan case.

Enum to distinguish general scan types.

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.

Split transaction journal entry

Split transaction listener

A more restricted interface for HStore.

A Store data file.

A StoreFile writer.

Describe a StoreFile (hfile, reference, link)

KeyValueScanner adaptor over the Reader.

Base class for cell sink that separates the provided cells into multiple files.

Configuration class for stripe store and compactions.

Stripe flush request wrapper that writes a non-striped file.

Internal scanners differ from client-side scanners in that they operate on HStoreKeys and byte[] instead of RowResults.

Enum to distinguish general scan types.

A more restricted interface for HStore.

KeyValueScanner adaptor over the Reader.

Stripe flush request wrapper that writes a non-striped file.

Services provided by HRegionServer

Regions store data for a certain region of a table.

Interface which abstracts implementations on log sequenceId assignment

Gateway to Cluster Replication.

A source for a replication stream has to expose this service.

Internal scanners differ from client-side scanners in that they operate on HStoreKeys and byte[] instead of RowResults.

Regions store data for a certain region of a table.

Enum to distinguish general scan types.

This interface is used for the tracking and enforcement of Deletes during the course of a Get or Scan operation.

Internal scanners differ from client-side scanners in that they operate on HStoreKeys and byte[] instead of RowResults.

This class stores the Operation status code and the exception message that occurs in case of failure of operations like put, delete, etc.

RegionScanner describes iterators over rows in an HRegion.

HRegionServer makes a set of HRegions available to clients.

Wraps together the mutations which are applied as a batch to the region and their operation status and WALEdits.

HRegionServer makes a set of HRegions available to clients.

A "non-lazy" scanner which always does a real seek operation.

Describe a StoreFile (hfile, reference, link)

Last flushed sequence Ids for the regions and their stores on region server

HRegionServer makes a set of HRegions available to clients.