Package org.apache.hadoop.hdfs.server.datanode

Class Summary

Class	Description
BlockMetadataHeader	BlockMetadataHeader manages metadata for data blocks on Datanodes.
CachingStrategy	The caching strategy we should use for an HDFS read or write operation.
CachingStrategy.Builder
DiskBalancerWorkItem	Keeps track of how much work has finished.
DiskBalancerWorkStatus	Helper class that reports how much work has has been done by the node.
DiskBalancerWorkStatus.DiskBalancerWorkEntry	A class that is used to report each work item that we are working on.

Enum Summary

Enum	Description
DiskBalancerWorkStatus.Result	Various result values.

Exception Summary

Exception	Description
CorruptMetaHeaderException	Exception object that is thrown when the block metadata file is corrupt.
ReplicaNotFoundException	Exception indicating that DataNode does not have a replica that matches the target block.