Package org.apache.hadoop.hbase.util

Interface for AddressSelectionCondition to check if address is acceptable

Common methods Bloom filter methods required at read and write time.

Has some basic interaction with the environment.

Use dumping out mbeans as JSON.

A generic interface for the RegionSplitter code to use for all it's functionality.

An abstract implementation of the ByteRange API

Extends the basic SimpleByteRange implementation with position support.

A set of array utility functions that return reasonable values in cases where an array is allocated or if it is null

A Base64.Base64InputStream will read data from another InputStream, given in the constructor, and encode/decode to/from Base64 notation on the fly.

Handles Bloom filter initialization based on configuration and serialized metadata in the reader and writer of StoreFile.

A completion service, close to the one available in the JDK 1.7 However, this ones keeps the list of the future, and allows to cancel them all.

A generic bounded blocking Priority-Queue.

Implements a Bloom filter, as defined by Bloom in 1970.

Utility functions for working with byte buffers, such as reading/writing variable-length long numbers.

Utility class that handles byte arrays, conversions to/from other types, comparisons, hash code generation, manufacturing keys for HashMaps or HashSets, etc.

Provides a lexicographical comparer implementation; either a Java implementation or a faster implementation based on Unsafe.

Hack to workaround HBASE-1304 issue that keeps bubbling up when a mapreduce context.

Utilities for class manipulation.

Class for determining the "size" of a class, an attempt to calculate the actual bytes that an object of this class will occupy in memory The core of this class is taken from the Derby project

Utility methods for dealing with Collections, including treating null collections as empty.

Compression validation test.

Default factory class for the sets associated with given keys.

Some configuration related utilities

High scalable counter.

Default implementation of an environment edge.

Wrapper around Hadoop's DNS class to hide reflection.

This is a class loader that can load classes dynamically from new jar files under a configured folder.

Manages a singleton instance of the environment edge.

Helper to convert Exceptions and StackTraces from/to protobuf.

MapR implementation.

Utility methods for interacting with the underlying file system.

A PathFilter that only allows directories.

A PathFilter that returns only regular files.

A PathFilter that returns usertable directories.

A generic way for querying Java properties.

This class encapsulates a byte array and overrides hashCode and equals so that it's identity is based on the data rather than the array instance.

Tool that prints out a configuration.

This is a Tool wrapper that gathers -Dxxx=yyy configuration settings from the command line.

Stores the regioninfo entries from HDFS

Stores the regioninfo retrieved from Online region servers.

Contact hdfs and get all information about specified table directory into regioninfo list.

This class contains helper methods that repair parts of hbase's filesystem contents.

Tool to detect presence of any HFileV1 in the given directory.

HttpServer utility.

An entry returned to the client as a lock object

Uses an incrementing algorithm instead of the default.

Produces 32-bit hash for hash table lookup.

Utility class for converting objects to JSON

Utility used running a cluster all in the one JVM.

Datastructure to hold RegionServer Thread and RegionServer instance

Certain JVM versions are known to be unstable with HBase.

An environment edge that uses a manually set value.

Utility class for MD5 MD5 hash produces a 128-bit digest.

Contains utility methods for manipulating HBase meta tables.

Utility methods for interacting with the regions.

Computes the optimal (minimal cost) assignment of jobs to workers (or other analogous) concepts given a cost matrix of each pair of job and worker, using the algorithm by James Munkres in "Algorithms for the Assignment and Transportation Problems", with additional optimizations as described by Jin Kue Wong in "A New Implementation of an Algorithm for the Optimal Assignment Problem: An Improved Version of Munkres' Algorithm".

This is a very fast, non-cryptographic hash suitable for general hash-based lookup.

Utility class that handles ordered byte arrays.

A generic, immutable class for pairs of objects both of type T.

The ThreadLocalPool represents a PoolMap.Pool that builds on the ThreadLocal class.

Process related utilities.

This is a generic region split calculator.

HexStringSplit is a well-known RegionSplitter.SplitAlgorithm for choosing region boundaries.

Configuration for a retry counter

This class maintains mean and variation for any sequence of input provided to it.

Similar to RegionReplicaUtil but for the server side

A read only version of the ByteRange.

Extends the basic SimpleMutableByteRange implementation with position support and it is a readonly version.

Sleeper for current thread.

Simple sorted list implementation that uses ArrayList as the underlying collection so we can support RandomAccess.

Utility for Strings.

Utility class to manage a triple.

A WeakReference based shared object pool.

Utility class with methods for manipulating Writable objects

Tool to migrate zookeeper data of older hbase versions(<0.95.0) to PB.

Checksum types.

Used to describe or modify the lexicographical sort order of a byte[].

Thrown when the file system needs to be upgraded

Thrown when the lease was expected to be recovered, but the file can't be opened.