程序包 org.apache.hadoop.hbase

接口概要

接口	说明
Abortable	Interface to support the aborting of a given server or client.
ClusterMetrics	Metrics information on the HBase cluster.
Coprocessor	Base interface for the 4 coprocessors - MasterCoprocessor, RegionCoprocessor, RegionServerCoprocessor, and WALCoprocessor.
CoprocessorEnvironment<C extends Coprocessor>	Coprocessor environment state.
MetaTableAccessor.CloseableVisitor	Implementations 'visit' a catalog table row but with close() at the end.
MetaTableAccessor.Visitor	Implementations 'visit' a catalog table row.
RegionMetrics	Encapsulates per-region load metrics.
ServerMetrics	This class is used for exporting current state of load on a RegionServer.

类概要

类	说明
AsyncMetaTableAccessor	The asynchronous meta table accessor.
CacheEvictionStats
CacheEvictionStatsAggregator	Used to merge CacheEvictionStats.
CacheEvictionStatsBuilder
ClusterId	The identifier for this cluster.
ClusterMetricsBuilder
ClusterStatus	已过时 As of release 2.0.0, this will be removed in HBase 3.0.0 Use ClusterMetrics instead.
HColumnDescriptor	已过时
HRegionInfo	已过时 As of release 2.0.0, this will be removed in HBase 3.0.0.
HRegionLocation	Data structure to hold RegionInfo and the address for the hosting HRegionServer.
HTableDescriptor	已过时 As of release 2.0.0, this will be removed in HBase 3.0.0.
MetaTableAccessor	Read/write operations on hbase:meta region as well as assignment information stored to hbase:meta.
MetaTableAccessor.DefaultVisitorBase	A Visitor that skips offline regions and split parents
MetaTableAccessor.ReplicationBarrierResult
MetaTableAccessor.TableVisitorBase	A Visitor for a table.
RegionLoad	已过时 As of release 2.0.0, this will be removed in HBase 3.0.0 Use RegionMetrics instead.
RegionLocations	Container for holding a list of HRegionLocation's that correspond to the same range.
RegionMetricsBuilder
RSGroupTableAccessor	Read rs group information from hbase:rsgroup.
ServerLoad	已过时 As of release 2.0.0, this will be removed in HBase 3.0.0 Use ServerMetrics instead.
ServerMetricsBuilder
Size	It is used to represent the size with different units.

枚举概要

枚举	说明
ClusterMetrics.Option	Kinds of ClusterMetrics
CompareOperator	Generic set of comparison operators.
Coprocessor.State	Lifecycle state of a given coprocessor instance.
KeepDeletedCells	Ways to keep cells marked for delete around.
MemoryCompactionPolicy	Enum describing all possible memory compaction policies
MetaTableAccessor.QueryType
Size.Unit

异常错误概要

异常错误	说明
CallDroppedException	Returned to the clients when their request was discarded due to server being overloaded.
CallQueueTooBigException
ClockOutOfSyncException	This exception is thrown by the master when a region server clock skew is too high.
ConcurrentTableModificationException	Thrown when a table has been modified concurrently
DoNotRetryIOException	Subclass if exception is not meant to be retried: e.g.
DroppedSnapshotException	Thrown during flush if the possibility snapshot content was not properly persisted into store files.
FailedCloseWALAfterInitializedErrorException	Throw when failed cleanup unsuccessful initialized wal
InvalidFamilyOperationException	Thrown if a request is table schema modification is requested but made for an invalid family name.
MasterNotRunningException	Thrown if the master is not running
MultiActionResultTooLarge	Exception thrown when the result needs to be chunked on the server side.
NamespaceExistException	Thrown when a namespace exists but should not
NamespaceNotFoundException	Thrown when a namespace can not be located
NotAllMetaRegionsOnlineException	Thrown when an operation requires the root and all meta regions to be online
NotServingRegionException	Thrown by a region server if it is sent a request for a region it is not serving.
PleaseHoldException	This exception is thrown by the master when a region server was shut down and restarted so fast that the master still hasn't processed the server shutdown of the first instance, or when master is initializing and client call admin operations, or when an operation is performed on a region server that is still starting.
RegionException	Thrown when something happens related to region handling.
RegionTooBusyException	Thrown by a region server if it will block and wait to serve a request.
ReplicationPeerNotFoundException	Thrown when a replication peer can not be found
RetryImmediatelyException
TableExistsException	Thrown when a table exists but should not.
TableInfoMissingException	Failed to find .tableinfo file under the table directory.
TableNotDisabledException	Thrown if a table should be offline but is not.
TableNotEnabledException	Thrown if a table should be enabled but is not.
TableNotFoundException	Thrown when a table cannot be located.
UnknownRegionException	Thrown when we are asked to operate on a region we know nothing about.
UnknownScannerException	Thrown if a region server is passed an unknown scanner ID.
YouAreDeadException	This exception is thrown by the master when a region server reports and is already being processed as dead.
ZooKeeperConnectionException	Thrown if the client can't connect to ZooKeeper.