| Package | Description |
|---|---|
| org.apache.hadoop.hdfs |
A distributed implementation of
FileSystem. |
| org.apache.hadoop.hdfs.server.datanode | |
| org.apache.hadoop.hdfs.server.datanode.fsdataset | |
| org.apache.hadoop.hdfs.server.datanode.fsdataset.impl |
| Class | Description |
|---|---|
| RamDiskReplicaLruTracker |
An implementation of RamDiskReplicaTracker that uses an LRU
eviction scheme.
|
| ReservedSpaceCalculator |
Used for calculating file system space reserved for non-HDFS data.
|
| Class | Description |
|---|---|
| FsVolumeImpl |
The underlying volume used to store replica.
|
| Class | Description |
|---|---|
| FsVolumeImpl |
The underlying volume used to store replica.
|
| MountVolumeMap |
MountVolumeMap contains information of the relationship
between underlying filesystem mount and datanode volumes.
|
| Class | Description |
|---|---|
| AddBlockPoolException |
This exception collects all IOExceptions thrown when adding block pools and
scanning volumes.
|
| BlockPoolSlice |
A block pool slice represents a portion of a block pool stored on a volume.
|
| FsVolumeImpl.BlockDirFilter |
Filter for block file names stored on the file system volumes.
|
| MappableBlock |
Represents an HDFS block that is mapped by the DataNode.
|
| MappableBlockLoader |
Maps block to DataNode cache region.
|
| PmemMappableBlockLoader |
Maps block to persistent memory by using mapped byte buffer.
|
| PmemVolumeManager |
Manage the persistent memory volumes.
|
| RamDiskReplicaTracker | |
| ReservedSpaceCalculator |
Used for calculating file system space reserved for non-HDFS data.
|
| ReservedSpaceCalculator.Builder |
Used for creating instances of ReservedSpaceCalculator.
|
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