Package org.apache.hadoop.hbase.util

Interface Summary

BloomFilter	Defines the general behavior of a bloom filter.
BloomFilterBase	Common methods Bloom filter methods required at read and write time.
BloomFilterWriter	Specifies methods needed to add elements to a Bloom filter and serialize the resulting Bloom filter as a sequence of bytes.
CancelableProgressable	Similar interface as Progressable but returns a boolean to support canceling the operation.
FSVisitor.LogFileVisitor
FSVisitor.RecoveredEditsVisitor
FSVisitor.StoreFileVisitor
HBaseFsck.ErrorReporter
KeyRange	A key range use in split coverage.
ModifyRegionUtils.RegionFillTask
RegionSplitter.SplitAlgorithm	A generic interface for the RegionSplitter code to use for all it's functionality.

Class Summary

AbstractHBaseTool	Common base class used for HBase command-line tools.
Base64	Encodes and decodes to and from Base64 notation.
Base64.Base64InputStream	A Base64.Base64InputStream will read data from another InputStream, given in the constructor, and encode/decode to/from Base64 notation on the fly.
Base64.Base64OutputStream	A Base64.Base64OutputStream will write data to another OutputStream, given in the constructor, and encode/decode to/from Base64 notation on the fly.
BloomFilterFactory	Handles Bloom filter initialization based on configuration and serialized metadata in the reader and writer of StoreFile.
ByteBloomFilter	Implements a Bloom filter, as defined by Bloom in 1970.
ChecksumFactory	Utility class that is used to generate a Checksum object.
CollectionBackedScanner	Utility scanner that wraps a sortable collection and serves as a KeyValueScanner.
CompoundBloomFilter	A Bloom filter implementation built on top of ByteBloomFilter, encapsulating a set of fixed-size Bloom filters written out at the time of HFile generation into the data block stream, and loaded on demand at query time.
CompoundBloomFilterBase
CompoundBloomFilterWriter	Adds methods required for writing a compound Bloom filter to the data section of an HFile to the CompoundBloomFilter class.
CompressionTest	Compression validation test.
DirectMemoryUtils
FSHDFSUtils	Implementation for hdfs
FSMapRUtils	MapR implementation.
FSTableDescriptors	Implementation of TableDescriptors that reads descriptors from the passed filesystem.
FSUtils	Utility methods for interacting with the underlying file system.
FSUtils.DirFilter	A PathFilter that returns directories.
FSUtils.FamilyDirFilter	Filter for all dirs that are legal column family names.
FSUtils.HFileFilter	Filter for HFiles that excludes reference files.
FSUtils.RegionDirFilter	Filter for all dirs that don't start with '.'
FSVisitor	Utility methods for interacting with the hbase.root file system.
GetJavaProperty	A generic way for querying Java properties.
HashedBytes	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.
HBaseConfTool	Tool that prints out a configuration.
HBaseFsck	HBaseFsck (hbck) is a tool for checking and repairing region consistency and table integrity problems in a corrupted HBase.
HBaseFsck.HbckInfo	Maintain information about a particular region.
HBaseFsckRepair	This class contains helper methods that repair parts of hbase's filesystem contents.
HFileArchiveUtil	Helper class for all utilities related to archival/retrieval of HFiles
IdLock	Allows multiple concurrent clients to lock on a numeric id with a minimal memory overhead.
IdLock.Entry	An entry returned to the client as a lock object
InfoServer	Create a Jetty embedded server to answer http requests.
JVMClusterUtil	Utility used running a cluster all in the one JVM.
JVMClusterUtil.MasterThread	Datastructure to hold Master Thread and Master instance
JVMClusterUtil.RegionServerThread	Datastructure to hold RegionServer Thread and RegionServer instance
JvmVersion	Certain JVM versions are known to be unstable with HBase.
Keying	Utility creating hbase friendly keys.
KeyLocker<K extends Comparable<? super K>>	A utility class to manage a set of locks.
ManualEnvironmentEdge	An environment edge that uses a manually set value.
Merge	Utility that can merge any two regions in the same table: adjacent, overlapping or disjoint.
MetaUtils	Contains utility methods for manipulating HBase meta tables.
ModifyRegionUtils	Utility methods for interacting with the regions.
ProtoUtil
RegionSplitCalculator<R extends KeyRange>	This is a generic region split calculator.
RegionSplitter	The RegionSplitter class provides several utilities to help in the administration lifecycle for developers who choose to manually split regions instead of having HBase handle that automatically.
RegionSplitter.HexStringSplit	HexStringSplit is a well-known RegionSplitter.SplitAlgorithm for choosing region boundaries.
RegionSplitter.UniformSplit	A SplitAlgorithm that divides the space of possible keys evenly.
ServerCommandLine	Base class for command lines that start up various HBase daemons.
ShutdownHookManager	This class provides ShutdownHookManager shims for HBase to interact with the Hadoop 1.0.x and the Hadoop 2.0+ series.
SortedCopyOnWriteSet<E>	Simple SortedSet implementation that uses an internal TreeSet to provide ordering.

Enum Summary

ChecksumType	Checksum types.
HBaseFsck.ErrorReporter.ERROR_CODE

Exception Summary

HBaseFsck.RegionRepairException

Exception thrown when a integrity repair operation fails in an unresolvable way.