| Package | Description | 
|---|---|
| org.apache.hadoop.hdfs.server.datanode.fsdataset.impl | 
| Class and Description | 
|---|
| AddBlockPoolException This exception collects all IOExceptions thrown when adding block pools and
 scanning volumes. | 
| FsVolumeImpl.BlockDirFilter Filter for block file names stored on the file system volumes. | 
| ReservedSpaceCalculator Used for calculating file system space reserved for non-HDFS data. | 
| ReservedSpaceCalculator.Builder Used for creating instances of ReservedSpaceCalculator. | 
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