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.
Coprocessor	Coprocessor interface.
CoprocessorEnvironment	Coprocessor environment state.
MetaTableAccessor.Visitor	Implementations 'visit' a catalog table row.

类概要

类	说明
ClusterId	The identifier for this cluster.
ClusterStatus	Status information on the HBase cluster.
DeprecatedTableDescriptor	Only used for HBase 1.7.0 compatibility sakes.
HColumnDescriptor	An HColumnDescriptor contains information about a column family such as the number of versions, compression settings, etc.
HRegionInfo	Information about a region.
HRegionLocation	Data structure to hold HRegionInfo and the address for the hosting HRegionServer.
HTableDescriptor	HTableDescriptor contains the details about an HBase table such as the descriptors of all the column families, is the table a catalog table, -ROOT- or hbase:meta , if the table is read only, the maximum size of the memstore, when the region split should occur, coprocessors associated with it etc...
MetaTableAccessor	Read/write operations on region and assignment information store in hbase:meta.
RegionLoad	Encapsulates per-region load metrics.
RegionLocations	Container for holding a list of HRegionLocation's that correspond to the same range.
RegionTransition	Current state of a region in transition.
RemoteExceptionHandler	An immutable class which contains a static method for handling org.apache.hadoop.ipc.RemoteException exceptions.
ServerLoad	This class is used for exporting current state of load on a RegionServer.
ServerName	Instance of an HBase ServerName.

枚举概要

枚举	说明
Coprocessor.State	Lifecycle state of a given coprocessor instance.
KeepDeletedCells	Ways to keep cells marked for delete around.

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.
CoordinatedStateException	Thrown by operations requiring coordination state access or manipulation when internal error within coordination engine (or other internal implementation) occurs.
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.
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.
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.