| Interface | Description |
|---|---|
| BlockStatsMXBean |
This is an interface used to retrieve statistic information related to
block management.
|
| DatanodeAdminMonitorInterface |
Interface used to implement a decommission and maintenance monitor class,
which is instantiated by the DatanodeAdminManager class.
|
| DatanodeStatistics |
Datanode statistics
|
| Class | Description |
|---|---|
| AvailableSpaceBlockPlacementPolicy |
Space balanced block placement policy.
|
| AvailableSpaceRackFaultTolerantBlockPlacementPolicy |
Space balanced rack fault tolerant block placement policy.
|
| BlockIdManager |
BlockIdManager allocates the generation stamps and the block ID.
|
| BlockInfoStriped.StorageAndBlockIndex |
This class contains datanode storage information and block index in the
block group.
|
| BlockManagerFaultInjector |
Used to inject certain faults for testing.
|
| BlockPlacementPolicyWithNodeGroup |
The class is responsible for choosing the desired number of targets
for placing block replicas on environment with node-group layer.
|
| BlockPlacementStatusDefault | |
| BlockStoragePolicySuite |
A collection of block storage policies.
|
| BlockUnderConstructionFeature |
Represents the under construction feature of a Block.
|
| CombinedHostFileManager |
This class manages datanode configuration using a json file.
|
| DatanodeAdminBackoffMonitor |
This class implements the logic to track decommissioning and entering
maintenance nodes, ensure all their blocks are adequately replicated
before they are moved to the decommissioned or maintenance state.
|
| DatanodeAdminDefaultMonitor |
Checks to see if datanodes have finished DECOMMISSION_INPROGRESS or
ENTERING_MAINTENANCE state.
|
| DatanodeAdminMonitorBase |
This abstract class provides some base methods which are inherited by
the DatanodeAdmin BackOff and Default Monitors, which control decommission
and maintenance mode.
|
| DatanodeDescriptor.CachedBlocksList |
A list of CachedBlock objects on this datanode.
|
| DatanodeStorageInfo |
A Datanode has one or more storages.
|
| HostFileManager |
This class manages the include and exclude files for HDFS.
|
| HostSet |
The HostSet allows efficient queries on matching wildcard addresses.
|
| NumberReplicas |
A immutable object that stores the number of live replicas and
the number of decommissioned Replicas.
|
| ProvidedStorageMap.ProvidedDescriptor |
An abstract DatanodeDescriptor to track datanodes with provided storages.
|
| SlowDiskTracker.DiskLatency |
This structure is a thin wrapper over disk latencies.
|
| Enum | Description |
|---|---|
| CorruptReplicasMap.Reason |
The corruption reason code
|
| DatanodeDescriptor.CachedBlocksList.Type | |
| NumberReplicas.StoredReplicaState |
| Exception | Description |
|---|---|
| UnresolvedTopologyException |
This exception is thrown if resolving topology path
for a node fails.
|
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