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Class org.apache.hadoop.hdfs.server.datanode.DataNode

Removed Methods
void checkDiskError()  
void checkDiskError(IOException)  
BlockMetaDataInfo getBlockMetaDataInfo(Block) {@inheritDoc}
DataNode makeInstance(String[], Configuration) Make an instance of DataNode after ensuring that at least one of the given data directories (and their parent directories if necessary) can be created.
LocatedBlock recoverBlock(Block, boolean, DatanodeInfo[]) {@inheritDoc}
void updateBlock(Block, Block, boolean) {@inheritDoc}
 

Added Methods
void checkDiskError(Exception) Check if there is no space in disk
void checkDiskError() Check if there is a disk failure and if so handle the error
DatanodeRegistration getDatanodeRegistration() Return DatanodeRegistration
long getReplicaVisibleLength(Block) {@inheritDoc}
ReplicaRecoveryInfo initReplicaRecovery(RecoveringBlock)  
Block updateReplicaUnderRecovery(Block, long, long) Update replica with the new generation stamp and length.
 

Changed Methods
Daemon recoverBlocks(Collection) Change in signature from (Block[], DatanodeInfo[][]) to Collection.